Chevy Astro Knock Sensor Replacement

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Chevy Astro Knock Sensor Replacement

Рет қаралды 32,421

East Coast Classics

Күн бұрын

Replacing the engine knock sensor on my Astro van was super simple.

Пікірлер: 79

@veggiepowered 2 жыл бұрын

i'am your newest subscriber great videos. i just got a 1999 astro van

@LeeBreece 2 жыл бұрын

I moved states but I didn't want the plate from where i moved to on my truck, was too proud. So I've been driving with an old plate for about 7 months. But i don't drive more than an hour away and I rarely exceed speed limits.

@dixonrenyin95ugo 4 жыл бұрын

I have been out since early morning, when I saw the Ecc notification earlier, I just told myself that I will us the video to cool my nerves when am back home. Chris I love the passion with wish you pamper this toys. Am waiting to get to the root of this Astro issue, thanks.

@bobcat1 3 жыл бұрын

Remove and clean the MAF sensor

@lugiasean19 3 жыл бұрын

Maybe ignition coil or map sensor? I have a 91 Oldsmobile silhouette that had a similar problem and after I changed those the IAC and TPS it ran like new. I’d try the ignition coil first though. Oh also if it’s a TBI try the fuel injectors there’s two of them and they’re not hard to replace.

@HeX81783 4 жыл бұрын

You can check off the IAC, idle is not the issue, it's fuel related, if it has a TPS it may be the cause, that issue most likely is a a sistem to lean when you ask for more power. Any whu . Best of luck man, like your vids. Keep on trucking.

@sammolloy1 4 жыл бұрын

The knock sensor is tapered pipe thread and the tightening torque is the volume control.

@richardkafka5625 4 жыл бұрын

Quick and easy. It was worth trying for sure. Great video. Waiting for the next one!

@timfenrich5328 4 жыл бұрын

Great to the point vid! Keep going, easy fixes first👍

@woffordsoverlandjourneys8618 4 жыл бұрын

I have an 03 Chevy Astro all-wheel drive and I always wondered where the knock sensor was

@RicardoGarcia-kv8it 3 жыл бұрын

Where's the oil sensor located

@finthedin 4 жыл бұрын

I have had this issue a few times before where it essentially limits the revs of an engine and leads to rough running at the top end. Both occasions this was fixed by changing the Camshaft/Crankshaft Sensor. This tends to fail in such a way that it doesn’t effect low end revs, but as the engine speeds up it looses the reference between the crankshaft and the camshaft speeds. This should be another cheap fix so well worth trying I reckon. Best of luck from Scotland!

@sammolloy1 4 жыл бұрын

Finners The crank and cam sensors are often wired together to give the Engine Computer an average. A loose timing chain can wreak havoc

@finthedin 4 жыл бұрын

sammolloy1 yeah absolutely, although the timing can go bad due to the sensor without it being loose.

@jojograffsgnino276 3 жыл бұрын

This one has a spark control coil located in the distributor to provide timing signal for computer and ignition coil. It's likely not the problem. My dad had one that the distributor was walblely and the engine would shutter and shake badly.

@91SanCheZ7 4 жыл бұрын

Keep it up I love to see vans

@milfordcivic6755 4 жыл бұрын

Not the IAC. if it idles fine, that's not the issue. Put a pressure gauge on the fuel rail before replacing anything pump related. Check the Throttle position sensor with an ohmmeter and see if there are dropouts as you open the throttle. Don't just throw parts at it.

@HeX81783 4 жыл бұрын

I said the same things, didn't even see your comment xd but you're right it most likely is the TPS that's not sending the correct signal and leaning the sistem.

@GlamStacheessnostalgialounge 4 жыл бұрын

But....does this even have a throttle position sensor? Isn't that only something on wire-driven cars? Dunno, I don't even work on fuel injected cars.

@sammolloy1 4 жыл бұрын

Taking out a TPS that has 150,000 miles on it to test it and putting it back in makes no sense for a $25 part. If you can get to the plug to test the sweep with an analog meter, sure, you can save the R&R time.

@101starting 4 жыл бұрын

Looks like fuel problem from pump to injectors are popular on these good luck check the plugs also would help

@kevinhickmanjr3690 Жыл бұрын

Whats the part numbers for both of them? I'm having trouble finding the short fat one

@JoeManLARockinEmpire 4 жыл бұрын

Awesome video Chris!

@lennyb4924 4 жыл бұрын

Hey cris great video once again as a guy that has bought and sold my fair share of astro van and safari. Vans my gut tells me your problem might be bigger than you think and its a transmission chatter but for shits and giggles try changing spark plugs. Spark wires and distributer cap and rotor good luck brother

@DCDnow 3 жыл бұрын

If you are due a tune up soon, go ahead and replace the plug wires, distributor cap, and rotor button.

@deborahabercrombie9461 Жыл бұрын

what is the sensor right next to the knock sensor

@TheCopCar 4 жыл бұрын

Another great job! That engine cover was more work than swapping the part. Guess we are on to step two of troubleshooting. I hope it's something simple!

@mbbrower 4 жыл бұрын

Had a sputtering problem on a 91 Astro twice. Happened at highway speeds under load like accelerating or going up a hill. New distributor cap fixed it each time. I wonder if the heat in the back of the engine bay somehow shortens the life of the cap.

@hookyjo72 4 жыл бұрын

Like I mentioned before use Berryman's B-12 chemtool in the gas ⛽️ tank sounds like the injectors are clogged that stuff even cleans the spark plugs. Use a funnel it eats paint highly concentrated

@thomastommy1192 4 жыл бұрын

That may be a brook motor mount. It seems like it. Kool video thanks for sharing. Stay well & safe.

@Richard1977 4 жыл бұрын

The biggest question for me is: Does the engine also shake when you rev it in Neutral and Park? If it does, the problem is limited to engine and torque converter. If it doesn't, then the gearbox is the biggest suspect. Start with flushing the gearbox (is it up to level anyway?) as old fluid can also cause problems and I even have seen the same problem caused by old transmission fluid. And if I might make a suggestion? Plan on keeping the Astro for a year and see after that what you want to do with it: Sell it or keep it. You enjoy that van way to much to just fix it and sell it. If that was the case, you wouldn't be wanting to fix this problem. You didn't put this much effort into the Aerovan... Waiting for the next video!

@marcusbland4180 4 жыл бұрын

Drive shaft u joints.

@Beary98 4 жыл бұрын

Not sure why nobody has mentioned the egr. Egr is involved when the motor is warming up and during heavy acceleration. (Other nit picky people will likely comment and tell you more) Egr on these is easy, especially without cruise control components in the way. Just two 3/8 bolts. Easy to pull and inspect. Easy to test to. Worth doing. That said, said seem like a fuel or spark breakup. There's something on these dizzys that also detects heavy acceleration? Not sure. Chaising annlying idle on my 4.3 tbi in a 91 astro. Still learning.

@mrmontebuilder 4 жыл бұрын

Check the base timing, it cranks like it is advanced . I am thinking that maybe it is advanced to the point the ECM can't pull the timing back enough to keep it from pinging. Also check the EGR, fuel injected engines are tuned as lean as possible for emissions and are very dependent on the enrichment the EGR provides.

@Eraserhead1 4 жыл бұрын

Im not sure if the non vortech had the egr or not but my 4.3l vortech had that problem with the egr having crbon build up

@jonathanryan2915 4 жыл бұрын

Throttle Position Sensor, clogged fuel filter, weak fuel pump, bad distributor cap and rotor, bad O2 sensor,... Just a few suggestions. A scanner would be nice to have too

@mikeatv 4 жыл бұрын

what about the distributor vaccum advance... ? im just guessing....

@jojograffsgnino276 3 жыл бұрын

This one didn't have a vacuum advance!

@mikeatv 3 жыл бұрын

@@jojograffsgnino276 ok got ya

@sccarguy8242 4 жыл бұрын

Did you pull a few plugs ?? I know you looked at the wires but did you take a look at a plug or two ?

@jlb4417 Жыл бұрын

Did you find the problem?

@hullinger Жыл бұрын

Yup, it was the distributor cap the whole time. I had to get a GM brand cap and that made all the difference,.

@joemazzola7387 4 жыл бұрын

Remove the e g r valve and check the pintal for carbon. Build up

@KindCreature1 4 жыл бұрын

Oops, my online illustration had the knock sensor in a whole different area.

@customautosales5170 4 жыл бұрын

I’m wondering if it’s the mass air flow. I would think it’s either an air or fuel issue when you give it full throttle.

@jojograffsgnino276 3 жыл бұрын

This has a map sensor not mass airflow sensor. I would check the throttle position first then you can check the MAP (manifold pressure sensor) located right of the throttle body. Fuel pump may be the problem. It may not be providing enough fuel which will make it cut out!

@09tahoeppv 4 жыл бұрын

Dam bro I was hoping that fixes the issue

@jojograffsgnino276 3 жыл бұрын

Can you tell me both part numbers for the two knock sensors you purchased? I think mine has the larger size thread diameter

@mph5896 4 жыл бұрын

Thats a REALLY strange noise. Whats throwing me off is actually seeing the engine shake. I have never seen an engine like that before shake (since its under the hood of a car). Is that spark knock? If so, I have seen REALLY old gas cause it. Also if the egr isn't opening you can have spark knock.

@noahburnham7240 4 жыл бұрын

Are there any codes. Cel?

@emeyer6963 4 жыл бұрын

Hate when that happens!Think you have the culprit but alas it's not the one.I am late to the party.Have you checked the plugs?Wires look decent.

@BBCIradio 4 жыл бұрын

How old is that distributor? The Hall effects sensor or Cam Position sensor inside distributor degrades and does intermittent things like that.

@shanew8655 4 жыл бұрын

Have you got a code reader try that first or is it to old ?

@sammolloy1 4 жыл бұрын

Gooner Shane They had codes but all manufacturers were different and the diagnostics were still pretty stupid. A bad fuel filter might show up as a bad O2 sensor for instance. 1996 was the year OBDII was mandated, with standardized codes. Mustang went ahead and did the 3.8 in 94 and Camaro in midyear 95 when they switched to the 3800. The 94 up 5.0 V8 Mustang dash had the OBDII plug I think but there were no wires until the 1996 which also had the 4.6 V8

@shanew8655 4 жыл бұрын

sammolloy1 Thanks for the update 😊

@johna.4334 4 жыл бұрын

@@sammolloy1 Mustang came with a 3.8L engine?

@sammolloy1 4 жыл бұрын

john a. I think the “Mustang” has had just about every Ford engine ever made put in it. The 3.8 “Essex” was put in in 1994, then replaced with the 4.0 “Cologne” at some point. Today I would choose the new 2.3 as found in the Ranger if I were to buy one.

@sleve_mcdichael_ 4 жыл бұрын

I would start with simple stuff that you would want to change out anyhow whether you had the issue or not. Plugs, plug wires, distributor cap, etc. Could be a gap problem with worn out plugs. If it doesn't work, probably needed to do it anyhow. Just a suggestion!

@kevink.2719 4 жыл бұрын

Awesome video I see you left off the coffee break step again. Looking forward to tomorrow's video 👍

@cbr600f4i2 4 жыл бұрын

What does the knock sensor do? I have a different vehicle but when I press hard on the gas, the vehicle will rattle really hard or (knock, ping) depending on who you talk to. It's worse in the heat and worse with lower octane gasoline. All my Toyotas have done it. Service Sept always claims to be stupid and cant fix because they don't know what it is. Thx.

@robs1852 4 жыл бұрын

When the sensor detects a knock, the computer will retard the timing until no more knocking is detected. I think in GM OBD1 the timing is retarded in 2 degree increments.

@jojograffsgnino276 3 жыл бұрын

Sometimes just buy higher octane fuel will help with that!

@umpireoba 4 жыл бұрын

Good evening 👋

@mds2465 4 жыл бұрын

It sounds like it’s the vortec injection going out

@gchsbus 4 жыл бұрын

Chris, I love your channel and mostly all the cars you feature on your channel. However, why are you messing with this Astro van? The reason the Astro van is stumbling and mumbling is because its an Astro van. GM engineered these well then the cost cutting executives swooped in and made so much cost cutting, you should hang a holy rosary from the rearview mirror and be thankful its running and not falling apart. I remember when these things were new, Chris. My friend's dad bought one and we went for a spin the first month he had it and some aggressive driver pulled in front of him and cut him off. He slammed on the brakes and the door came undone (no idea how that happened, it was closed) and it fell out of the van and onto the street. That was when it had 5k miles.

@mexicanspec 4 жыл бұрын

You are trying to say here that this van stumbled from the day it was new? I highly doubt that is true.

@gchsbus 4 жыл бұрын

@@mexicanspec Not trying to say anything. Its possible it did but probably not.

@mexicanspec 4 жыл бұрын

@@gchsbus The 4.3L V6 is a very good running engine in this and the C series trucks. There is no reason to say it is stumbling because it is an Astro. there is obviously a fuel problem probably from sitting.

@GordoYoshi 2 ай бұрын

Still have a 93 and almost original parts and that issue never came !