Chevrolet Express: No Power After Hot Restart

Рет қаралды 213,874

6 жыл бұрын

In this video we have a look at a 2002 Chevy G3500 Express Van with the 5.7 liter that has a customer complaint of "bogging, lack of power after a hot soak." This is a fairly common complaint and symptom. It can be caused by many things such as a plugged catalytic converter, a failing fuel pump, or as we see in out case an oxygen sensor that is on the fritz! -Enjoy!
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Due to factors beyond the control of South Main Auto Repair, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. South Main Auto Repair assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. South Main Auto Repair recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of South Main Auto Repair, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not South Main Auto Repair

Пікірлер: 366

@nonyabiz2777 Жыл бұрын

S.M.A has just about every problem imaginable on vehicles. The rust is our friend as we get to learn from many types of problems. I do feel sorry for Eric because he breaths all that nasty rust partials. I watch every video numerous times and each time I learn.

@OGZeroLyfe 6 жыл бұрын

Vise-grips are universal repair tools. I remember about 25 years ago seeing a car, in the trailer park i lived in as a teen, driving around with a pair of Vise-grips holding on the front drivers wheel on a mid 70's chevy where the spindle nut should have been. He drove it for a few weeks like that. That guy had more faith in those Vise-grips than the Pope has faith in God.

@rwbishop 6 жыл бұрын

Eons ago in high school a fellow auto shop student was messing with his turn signal switch and somehow lunched his steering shaft serrations... and as unable to reinstall the steering wheel went the Vise Grip route... drove it a couple of days like that before getting stopped by the cops.

@codybroken 6 жыл бұрын

Half what you say goes right over my head, but it's always fascinating. If there was an automatic thumbs up feature for KZfaq I'd set it for your channel.

@kevinbyrne4538 6 жыл бұрын

26:13 -- "It's only temporary -- unless it works." Absolutely true.

@VashthStampeede 4 жыл бұрын

I once attended a Bosch mini seminar about their O2 sensors. Their factory rep told all of us about how important it is to use the square box connector that comes with the universal sensors. Reason being that their sensors do not have the little holes just above the sensor body. This is for reference oxygen (air) for the sensor to operate properly. The Bosch sensors get their reference air between the actual wires and their insulation. The plastic box allows the reference air to enter and travel down the wires to the sensor. He said never leave out the plastic box with Bosch sensors. Just something I remembered from a 2012 automotive seminar including many manufacturer's representatives.

@mikechiodetti6737 5 жыл бұрын

Great Video. Intermittent 02 readings, with corrosion. In Calif, the F450's in the fleet did not have rear 02's! 14000 lbs (gas) and higher did not have rear 02's! All OBD2 except for no rear 02's. The vehicle was tested as a 2 speed idle. F350's over 9,999 lbs got 2 speed idle tests. These were 2000 through 2004. The fleet got new GM's and some Fords in 2012, I left in 2016. Smog Laws are such fun! ! (Sarcastically said!)

@DependableAutoTruck Жыл бұрын

reading 02 sensors and air fuel sensors have always been hard for me i mean i have the equipment to see them but having a full understanding each time i watch another video from you or wells really helps and have started to get a grip on it thanks so much for the time you take to make and share. i have made and posted several videos it takes time and effort to make them not as easy as most might think

@mc2whls 4 жыл бұрын

1 Ton van. GM Rattle Trap. Great explanation of the problem AND the repair methods used.

@robertdavis6708 6 жыл бұрын

Another great video from the South Main Auto channel. Great fun to watch a Master Technician doing his thing.

@elcheapo5302 6 жыл бұрын

I had the same problem months ago on my 98 Ram. It was the upstream sensor, green crusties on a heater circuit wire where the wire entered the sensor housing. It was worst as soon as it switched to closed loop, especially if raining. Couldn't have diagnosed it myself without you and your vids, Eric. Thanks again.

@davidhall3747 4 жыл бұрын

That's why we spray Deoxit and use a dab of Dielectric Grease on all external Electrical connections. An ounce of prevention is worth a pound of cure.

@xanderlander8989 5 жыл бұрын

That snap-on is super fast and responsive compared to everything else I've seen you use. I appreciate you using different tools. It illustrates what you get for your money. Also shows me that most problems can be solved with cheaper tools, which is good news for the shade tree mechanics among us.

@suzylarry1 6 жыл бұрын

I am not a automotive tech, but it is really nice to have the tools to help you do your job. Good to see how can get to the root of an issue!

@michaelknorr6825 3 жыл бұрын

Air charge temperature sensor, maf are 2 potential issues. O2 sensors do have a limit to how much they can adjust the ratio.

@dieselchevette 6 жыл бұрын

Great video walking people through bum oxygen sensors. I had a similar problem on my 97 gmc k1500 with the 4.3. I went cheap on the cat and sensors, all scored from eBay. Those 9 dollar sensors crapped out 3 months later after driving in a monsoon. Left bank was intermittent high, right bank was intermittent shorted low. You can imagine how the ecm loved that conflicting data. Replaced with densos from rockauto, 1 year and 0 issues and better mpg.

@topadrenalina679 3 жыл бұрын

Thanks a lot for all your videos I am learning a lot from you, greetings from México

@JMassengill 6 жыл бұрын

Nice video...."There's your problem, lady!"

@SmittySmithsonite 6 жыл бұрын

Got that same exact view out my windows this morning - the cold, white crap! Getting to be that time of year where I get pretty tired of it, and dream of life in the FL Keys, nightly ... Since I've dove head-first into OBD-II the past couple years, I seriously have forgotten about o2 sensors! Been a while since I've had a bad one come in here. So many sensors on these vehicles today - hard to keep them all straight! Learned so much that it made me forget the basic ones, lol. Glad you posted this one - maybe it'll stick this time. My memory banks are overflowing with acronyms ... 🤪 Figured out the problem with our 940 croaking when the high beams were turned on. Was just a bad ground! Since the fog lights shared the ground with the headlights, operation of the fogs or high beams would kill the engine! That was a strange one! Just reminded me I need to look at the wiring diagram to find out why the headlamp circuit was killing the engine - must've caused a huge voltage drop to the distributor, I figure. Anyway, just combined the fog & headlight ground wires together, dremeled the paint off the frame next to an existing stud, and ran a 12awg wire down there with an eyelet. Fixed! Then, the very next day, the rear driver's side door wouldn't latch. Wife had it all strung up with newspaper string to hold it shut, HAHAHA! Was pretty comical. She drove home 35 miles with it like that - must've been entertaining to people on the road. Had to cut her handy work off of there, then I just worked the lock up and down a few times - must've been frozen. Door shut no problem after that. Of course I had to tell my wife how quick and easy of a fix that was, and that she was fired as my mechanic, HAHAHA! 😁

@garyalford9394 4 жыл бұрын

G.M really sticks it to you on those wiring harnesses !!

@tylerwilliams3868 2 жыл бұрын

i love the time you take to diag your cars! im in a dealership and its always hard to get paid for the time spend vs time paid for diaging cars. but i always enjoy these and feel like ill be able to take what i learned from your videos to appy to my own work for that wonky car i may get one day!

@charlesgould8436 2 жыл бұрын

The ball cap under hat trick also works on big coats:)

@johnferguson7235 5 жыл бұрын

I'm making a "No Weirdos" sign for our place. Gotta have one.

@fonzo2525 5 жыл бұрын

Unfortunately putting up a sign usually has the opposite effect,lols

@billneu9520 6 жыл бұрын

Hi Eric, you are a true American and a skilled technician. You are an Educator, thanks for the scan tool lesson. If I can do it you can do it. I believed in that thinking my whole life. Bill N

@billyyoder8171 6 жыл бұрын

Thank you very much Eric. Good job. Really appreciate everything you do. Bless you and your family.

@TheMinnow101 5 жыл бұрын

Moved 5 years ago from Upstate NY. Loved the road trip travelogue footage which reaffirmed our decision to get the hell out of there.

@wyattoneable 6 жыл бұрын

"Get our head in the right funnel". Your one liners continue to crack me up. Like our friend baxroc2 stated, I don't get to see many O2 issues so the video was outstanding for me.

@jhuntosgarage 6 жыл бұрын

I love the Red and green show. Great job Eric. Thanks for sharing.

@johnmckamy6398 6 жыл бұрын

thank you for sharing , It's been a pretty crappy week but this video was like therapy . So yeah ,thanks for taking the time to hook us up with another great video.

@sun450 6 жыл бұрын

Love your videos, just upped my patreon pledge, you do such a damn good job of explaining the what’s and how’s of your repairs.... again thank you. Dave.

@roscoe454 4 жыл бұрын

thank you for your detailed work, and your honesty when you do these jobs.

@spelunkerd 6 жыл бұрын

Gotta love Red Green, a Canadian cultural icon. By the way, white balance is a little different. When auto white balance is turned off, snow turns a faint blue in the shadows, and faces turn light green under fluorescent light. The problem with backlighting is too much contrast, the automatic exposure over-corrects and everything turns dark. You already know the solution; get rid of the white background and keep the light source behind the camera. Ironically for better contrast when showing small parts on the bench, put a grey or blue towel behind and get rid of white. Another excellent video, Eric.

@woffordsoverlandjourneys8618 4 жыл бұрын

My Chevy Astro van has the same problem I'm glad you are doing this video man

@CubasAutomotive 6 жыл бұрын

That's a pretty great tip for the Chrysler & GM vehicles! I like the ideas you give me for testing procedures, for sure. I'm glad I'm not as far north as you, and avoided a couple of those snow storms you got. Did you see the over 100 vehicle pile up on a MO road yesterday, due to that white stuff? Crazy! Stay safe sir! 🤗🤗

@edwardmartinez199 6 жыл бұрын

Cuba Rodriguez When I lived in Cortland new York not far from Eric ' got used to driving in the snow. So long ago when I was young and did not know what I should do in life spent two year's at MIT before I realized medicine was my calling oh to be young and stupid once more.

@toysareforboys1 6 жыл бұрын

8:50 "that truck is full of little pennies, sprinkling them on the road for me. Lay em down thick bubba, lay em down thick." YOU SAVAGE! :)

@shaneharrison4775 3 жыл бұрын

That's the second time I've heard someone called a savage my neice said that about me as did another person lol

@Mr92cadi 6 жыл бұрын

Awesome diag Eric. Great way to use the scan tool to find that fault

@baxrok2. 6 жыл бұрын

Very interesting diagnosis. Not seeing many O2 sensor problems myself, I always find these videos fascinating. Thanks Dr. O!

@billyremmert7679 Жыл бұрын

I was driving the Chevy too the third time it happened the acceleration was erratic and the brakes wasn't working it got out of control it happened three times in 2 years and some predictable when it happens one time it was in reverse another times getting on a ramp off of expressway the third time of the airport I would crank it at the airport all of a sudden the engine started bucking and the brakes quit working this seems to be a problem with a 20/20 Chevy Express commercial van would it be a electronic throttle problem

@normangallant9879 6 жыл бұрын

Nice find and repair.Keep up the good work

@jackjacke4654 5 жыл бұрын

Love watching your videos. It always reminds me why i went south. : )

@hanskinslo326 6 жыл бұрын

Eric O., in the know!

@haywardsautomotive6156 6 жыл бұрын

Nice diagnosis & video. Nice saving him $$!! I work on a lot of elderly owners vehicles and I give them a break and give them the price I pay for parts.

@shaunsautorepairs5410 6 жыл бұрын

Good stuff mr O... O2 sensor and fuel trims are my favourite pids to watch...

@joemikos900 6 жыл бұрын

Thank you Eric, another fantastic video.

@vincescalise4821 5 жыл бұрын

Another great video very informative thank you

@ItsAlwaysRusty 6 жыл бұрын

Ah, the return of the Universal O2 Sensor. Don't remember seeing one in a video since that old Suzuki you put back together for the used car salesman.

@SouthMainAuto 6 жыл бұрын

Good memory, and that is the last time I have used one too :)

@viniciusoliveira-uf2yk 5 жыл бұрын

Não tem o que falar sobre o verus, um excelente equipamento ... parabéns pelo diagnóstico Erick!

@hammerhead6537 6 жыл бұрын

Thanks Eric, another great video. A lot of stages covered, big thumbs up!

@mc2whls 4 жыл бұрын

And remember. "If it ain't broke, you're not trying hard enough." (A Red Green saying)

@williamwalters9403 4 жыл бұрын

And if the women dont find you handsome,they should at least find you handy

@scottyakoubian9238 5 жыл бұрын

You’re Red Green fans!! I knew I liked you guys for a reason!

@cobraninetysix3883 6 жыл бұрын

Nice diagnosis!

@Tomgillchevy 6 жыл бұрын

Nice work man. Great video - thanks for sharing

@frnkjones40 2 жыл бұрын

The white balance is fine. You’re just a bit backlit. Thanks for the upload!

@benjaminstockton3431 6 жыл бұрын

Thanks for video Eric O.

@stormy9770 6 жыл бұрын

love your videos never would have figured my 2010 sierra out. to old to be working on it know ,but it is good to know thanks.

@Automotive_Solutions 6 жыл бұрын

Nice diag. Love the snap on holder in that van, saves a balancing act with scantool sliding around. 👍

@samrugtiv3839 4 жыл бұрын

Well done Eric. Sam

@NotHarry-er3wg 6 жыл бұрын

Great fix Eric! Salt Pi (le) Crust (french ) everywhere! Intermittent sensors are mind twisting for sure. Hondoo CRV next?

@Eastmead 6 жыл бұрын

Up and about early again :) I usually wait until 11am (UK) before I look for your postings.

@j.cooper2246 6 жыл бұрын

Stephen Eastmead ..Eric's video's auto upload at 5am..don't let him fool u..he's not up a 5am!! He's his own boss..lol( cept Mrs o )

@ironcross420 6 жыл бұрын

I work for the US Navy as a Mechanic. The base police has a bunch of these. One came in for an oil change. Okay simple right? Well since they're Govt vehicles, aka GSA Veh. They have to be approved for service and have to use the cheapest stuff available. Tried to pull out the dipstick, wont come. Another guy helps pull and we get it and it's caked with mud, sludge, etc The dipstick broke on us, so we ordered a new one and shipped it after filling it with oil. Comes back a few days later. Massive oil leak while running. Another tech got the RO but put it on my lift. Oil everywhere. I see it right away and yelled at the other tech, WELL THERE'S YOUR PROBLEM LADY. He was like WTF? Hes ASE while I'm not and took him a min to see it. OIl dipstick was not seated. Started it up and revved to 2500 and oil is just shooting out of the dipstick tube. TON of blow-by just kept pushing the dipstick out. Good times. Now I had to clean the oil mess in my bay....

@brianwolf692009 6 жыл бұрын

Great vid. I'm having almost the same problem.

@F6HemiCharger 5 жыл бұрын

Mrs. O knows Red Green! That’s awesome!

@catnapwat 6 жыл бұрын

Hey Mr O, the white balance refers to the colour temperature. The exposure changing is the light-dark-light effect you're seeing.

@jamesdayton9530 6 жыл бұрын

GREAT trouble shooting and video.

@MatthiasDymke 3 жыл бұрын

The whole Spiel😁😁😉Greetings from Germany, great channel!!!😍😍

@mikefedele4521 6 жыл бұрын

Good find those ones are usually tricky

@ozzstars_cars 6 жыл бұрын

Never mind the van is fixed, sweet door knob hack fix! Good thing your handy Eric, at least you have something going for you. lol

@richardbell8814 5 жыл бұрын

This may be from back in 2/18 but the struggle is still real in GM world. Just replaced the downstream on a 4.3 today for heater not working and after looking at the graphs I see the bank 2 is almost a flat line. Sheesh...

@stoneblue1795 6 жыл бұрын

Interesting stuff as always. Also digging that hat arrangement you are sporting there. You may start a trend, careful.

@klystron1 6 жыл бұрын

top video, thanks for sharing.

@jimmymccandless3938 6 жыл бұрын

Great video, I have a 1999 Chevy S10, 4.3 with 275,000 miles that bogs on start up when hot from time to time. I will look into the sensors!!!! Thanks for the insight on this symptom and fix.

@kellismith4329 Жыл бұрын

I have the same issue with a 4.3 in a silverado, I think my issue is the cats as a rubber hammer tap causes them to rattle inside 🫢

@XGamesJ6 6 жыл бұрын

I found a similar issue on a friends Mazda Protege. The O2 connector was completely caked in corrosion, it was allowing the heater voltage to leak to the signal wire making the computer think the engine was running way off. So it would try to lean out the mixture and caused nothing but popping and dieing. Ended up cleaning the connectors with CLR. Problem solved. The pins weren't too bad. it was mostly all in the plastic between the connectors, a nice layer of crud.

@waynewallace9414 3 жыл бұрын

Understood good job again

@adamtrombino106 6 жыл бұрын

A lot of those GM 3/4 and 1 ton vans and trucks nearly automatically pass a cat drive cycle despite what real time o2 data says. It a programing deal. In your case, it was old enough to say not supported, but I've seen several 05-09 say 'pass' when indeed they are not even looking at cat pass/fail data, not running the cat test, and the cats clearly weren't working. So long as the continuous and o2 monitors pass, these are the easiest to sneak through emission tests for failed evap problems. So much for the polar bears!

@paultro8457 4 жыл бұрын

Just subscribed.👍👍 awesome videos.

@longfieldcommercials 5 жыл бұрын

If I understand,this van does not put the money light on when the cats are us,very good video,enjoyed the process ,thanks mr o.

@kasualskeptik2584 2 жыл бұрын

Lots of information to digest, which means I need to go learn what an O2 sensor is... ;-)

@skiff27 6 жыл бұрын

Thank you have a good day your videos are great have a good week

@shaneharrison4775 3 жыл бұрын

Cool progress found the green puss and the crusty wire and connector

@TriggerTravels 6 жыл бұрын

Nice weather bud... 70 here in Houston today

@autohelix 6 жыл бұрын

I miss watching O2 sensors and the switching rate on the scan tool. Nothing better then finding a sleepy or dead O2 sensor.

@jamiedodd1991 6 жыл бұрын

You mentioned that you used Bosch brand O2 sensors. I heard that that brand doesn't always work properly on GM vehicles. Denso is the OE supplier for GM, Denso O2 sensors might have been a better choice for that vehicle.

@CHIBA280CRV 6 жыл бұрын

Well done sir , thanks

@louiemoscatel585 6 жыл бұрын

I know with the 2K jeep Cherokee the FI #3 was normally to blame for heat soak. TSB included a small heat shielding wrap around the injector and foil shield on the IM

@laohantun7404 6 жыл бұрын

Thanks mate.

@sergios602 6 жыл бұрын

Really good video!!

@stormy9770 6 жыл бұрын

in between jobs when your bays open you should do a GENN KELLY number like SINGING IN THE RAIN as and added bonus

@PistonShack 3 жыл бұрын

Thanks for this video.

@joelund655 4 жыл бұрын

Love that door Handel love it love it love it

@rrmech11 6 жыл бұрын

Excellent job Eric One question. Here in NW Indiana for our vehicles to pass the obd 2 test we are only allowed the evap monitor to be incomplete. What does your state ( N. Y. ) allow?

@drloch6174 5 жыл бұрын

FYI some of the GM trucks to go into PE immediately if at all. GM is saving fuel for the owner at the expensive of engine components. Think of like this, if the motor breaks look at all the fuel you won't be using which equals saving fuel, less carbon footprint, you get the picture.

@sergiovtorres 6 жыл бұрын

Just had a similar problem in the shop today with a dodge b250 van wont start after warmed up turn out to be a coolant temp sensor. Thank you for sharing these videos i learn alot from them. I have to do head gasket job on a 95 toyota previa do you have any videos on that 🤔

@MichaelBMoore-pu5wz 3 жыл бұрын

Love the snow!

@dnlmachine4287 3 жыл бұрын

Does the vehicle go in Closed Loop for cranking, even when hot? Great vid Eric, keep on keepin on. LOL Red Green FTW. Stay gold.

@eastcoastlowlife1 6 жыл бұрын

great video

@emmashepard2070 6 жыл бұрын

Nice hipster look lol Great diagnostic tho, I hate rich conditions, test everything it all points to O2 sensor. Replace it and it's still there.. Had it happen 2 times now. Mind you it is possible I missed something.. Anyways cheers good vid

@SouthMainAuto 6 жыл бұрын

Not a hipster haha, they do it to be cool. I do it to keep from freezing to death lol

@gordonfreeman5434 6 жыл бұрын

Just like a good guitarist having many guitars, eric needs his various scan tools.

@joelund655 4 жыл бұрын

Nice job very good

@LethalMercury 6 жыл бұрын

Eric, can you please do a video, or link a good video on what voltages you would find on the vehicle side of a 7 pin A/F Ratio sensor, Similar to what can be found on an 06 Honda Odyssey?