Simple VP44 Diagnosis - Get Power to the pump!

Рет қаралды 69,868

Күн бұрын

🔧 First step: watch us check multiple power failure points to your VP44. Hopefully it's an easy fix!
💪 Second step: check fuel to the VP44 with this easy tool:
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Chapters
0:00 Beginning
2:08 Tool needed to test electrical connections
3:49 Test fuses
4:26 "Key off" then disconnect VP44 wiring harness (pull slide lock out on one end)
5:02 Turn key back on, then test the wiring harness (which pins to test)
8:16 Another major problem: fuel system relay
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Пікірлер: 111

@thoroughbreddiesel Жыл бұрын

💪Need to check fuel to the VP44, use this easy tool: www.thoroughbreddiesel.com/3163834/ 🔥 Need a new VP44? www.thoroughbreddiesel.com/brands/vp44/

@elvispusley3515 6 ай бұрын

I tested the space shuttle with a test light on the starter for the rockets, found a bad fuse and then jumped in and went to mars. It’s a great tool no doubt. Thank you.

@outcastprojects6733 21 күн бұрын

Thank You Sir!!!!!!!!! A video that works!

@thoroughbreddiesel 18 күн бұрын

You're welcome!

@tylerayala9689 Жыл бұрын

I appreciate that little horn relay trick. Going on two years owning my stock vp truck and I’m loving it. I like to do my own maintenance too.

@thoroughbreddiesel Жыл бұрын

Glad to help!

@prodieselrepair3218 Жыл бұрын

I use test lights all the time. Yes voltmeters have their place, but nothing compares to using a test light to actually test whether the circuit can actually carry a load. You can measure proper voltage on a wire, but as soon as you put a load through the circuit, it can disappear if you have a bad wire. I used headlight bulbs a lot of times. I have several set up for different amps.

@cyumadbrosummit3534 11 ай бұрын

What if you're only getting 10 volts on a test light? Partial/ low voltage is completely un-diagnosable with a test light. How is more information bad?

@prodieselrepair3218 11 ай бұрын

@@cyumadbrosummit3534 No one said more info is bad.

@danriceman7533 Жыл бұрын

Great info. Thanks Wade!

@thoroughbreddiesel Жыл бұрын

You bet! Thanks!

@4xprops457 Жыл бұрын

Grew up on test lights! . They are still awesome.!

@thoroughbreddiesel Жыл бұрын

Yes they are!

@jimforsyth2. Жыл бұрын

Test lights are a wonderful thing

@domcummins4148 11 ай бұрын

Test lights are extremely useful. Never had any issues with them. It's a basic tool that will help a lot!!

@thoroughbreddiesel 11 ай бұрын

Totally agree!

@domcummins4148 11 ай бұрын

@@thoroughbreddiesel By the way, thank you for all your amazing videos. They have been very helpful to me and my friends. God bless you all 🙏

@thoroughbreddiesel 10 ай бұрын

You're welcome!

@TimothyYoung-s1b 12 күн бұрын

Ever thing up to this point looked good Pulled 10 amp engine fuse side of dash #9 ! Light stayed on

@thoroughbreddiesel 11 күн бұрын

Check both legs of that fuse and see if you still have power to one leg, if so, suspect a short to ground on that circuit.

@AcrossLeatherNewCastle Жыл бұрын

Wade great video! Thank you for sharing. Now to check my 99 .

@thoroughbreddiesel Жыл бұрын

Thank you.

@jimkillen1065 8 ай бұрын

Yea a test light is a good tool ..Appreciate the videos

@thoroughbreddiesel 8 ай бұрын

Glad to hear!

@allennyikadzino3570 3 ай бұрын

Well explained. Thanks for the knowledge

@thoroughbreddiesel 3 ай бұрын

You're welcome.

@powellkwd40 8 ай бұрын

Very useful information. Thanks

@thoroughbreddiesel 8 ай бұрын

You are welcome!

@johnnylindsey5808 8 ай бұрын

Good job

@thoroughbreddiesel 8 ай бұрын

Thanks

@pytbob Жыл бұрын

Wait til you guys learn about Power Probes, like a test light for this millennium ;)

@robtaylor6806 Жыл бұрын

I’ve been using them for over 25 years. I have 4 of them. Use one everyday.

@ToddKing Ай бұрын

Actually a test light actually puts a bit of a load on the circuit so it can be more useful than a DVOM.

@de_fatherland6467 Жыл бұрын

Great video on basic diagnosis, hopefully I can find the problem on my Audi A6 2.5 TDI, haha completely different vehicles but same hpfp.

@thoroughbreddiesel Жыл бұрын

Good luck!

@threemglobal Жыл бұрын

Tq for sharing

@thoroughbreddiesel Жыл бұрын

Welcome 😊

@6okokokokokok6 8 ай бұрын

Have one that will start but sounds like its only running on 2-3 cylinders and has no throttle pedal. Everything i see online says thats a guaranteed bad vp44. Could wiring or 12v to the vp44 cause this as well or is that guaranteed bad vp44 right?

@billycradic368 Жыл бұрын

I sure do like your bedroom and your knowledge. Gun man .

@billycradic368 Жыл бұрын

Not bedroom lol your video

@thoroughbreddiesel Жыл бұрын

😂😂😂

@Repair-rookie Жыл бұрын

I love my test light.

@ezisbell Жыл бұрын

Have you checked for flames shooting under the hood LOL love it

@thoroughbreddiesel Жыл бұрын

😂

@user-nc4zw8zs9r Жыл бұрын

Wade, I have tested everything exactly as said in video including battery voltage on this 99' I've got in the shop and it turns over great but still wont start. Do the VP44 models "hummm" like the common rails do as you stated as a good lift pump test in a previous video I watched. Any help would be greatly appreciated and thanks for the detailed videos and advice!

@thoroughbreddiesel Жыл бұрын

No humming, but with the truck you are working on, if it’s a 99 and wont start but has good LP pressure and voltage to the pump, check to see if you have any crank signal (tach). A bad crank position sensor will keep the 98-200 trucks from starting.

@flatv1715 Жыл бұрын

In Orlando, we need a "Thoroughbred Diesel shop"🤣🤣🤣🤣

@thoroughbreddiesel Жыл бұрын

We ship to Orlando 😉

@flatv1715 Жыл бұрын

Yes I know,,I buy vP44 one month ago 😆,, the only thing is I don't trust in the Tech here Lol

@littlewhiteranger Жыл бұрын

So if I DO have both power and ground to #6 & #7 pins and my truck still doesn't start them something bad happened to my VP44? My truck ran fine before I pulled the engine to be re-sealed and had the head built but now that I finally got it back together it won't start and I can't find videos showing "how" fuel should be coming out of the injector lines to bleed

@thoroughbreddiesel Жыл бұрын

If you don’t have correct lift pump pressure the truck still won't run.

@user-tl4dv5qj3k Жыл бұрын

Got a p1689 code , p0230 and p1693. Checked fuel pressure on lift pump and got nothing. Replaced lift pump and that cleared all codes but p1689. Starts and idles ok after lift pump replaced but won’t get over 1500rpms and only goes ~25mph. After checking all the power , if everything is good would this be a symptom of a bad vp44?

@thoroughbreddiesel Жыл бұрын

Could be, or check the main connector at the VP44 connector for connection. Also check harness well.

@edskitv8736 Жыл бұрын

will the vp44 start the engine and idle without fuel pressure or does it need fuel pressure to start?

@thoroughbreddiesel Жыл бұрын

Needs fuel flow to start.

@chrisspangler6740 Жыл бұрын

will you swap a common rail fuel system to a vp44 motor with pop off injectors.make it cp3 common rail system with electric injectors.modify the injectors or make a hybrid set-up.use a gen 2 24 valve engine.

@thoroughbreddiesel Жыл бұрын

This gets brought up a lot but I don’t see any value to it. IF you want common rail easier and cheaper to stay common rail. Using mechanical injectors cant happen, you have to have computer controlled timing.

@davekana8388 6 ай бұрын

Hi Wade, most helpful, hard start warm or hot. I guess I need to get a test light. Did you make a video on checking for ground, 2000 VP44 truck, thanks.

@thoroughbreddiesel 6 ай бұрын

Thanks! Not yet.

@davekana8388 6 ай бұрын

@@thoroughbreddiesel please do, use Wades truck, thanks. Bet he likes getting paid for working on his on vehicle!🤓

@here_to_watch2115 Жыл бұрын

What could cause the fuel psi to fluctuate from 16 down to 6 while on the throttle at various % of throttle. Never goes below that but it was always steady between 12 and 15 prior. It has a new fuel filter since this started and I'd like to also note has raptor 150 on it.

@thoroughbreddiesel Жыл бұрын

Verify this with a second gauge to get repeatability in your data.

@here_to_watch2115 Жыл бұрын

@@thoroughbreddiesel I actually called the company that makes the raptor lift pump (I have the rp150) and they guy told me about the oe lift pump Deutsch connector being notorious for failing. I cleaned the contacts and she's bad to normal. Thanks for responding!

@user-uh8tp7du3t 10 ай бұрын

So I just recently just go a Qaudzilla adrenaline for my 02 dodge and I got everything set up and followed all the directions so I was ready to start it so I went and started it and it started rough idleing really really bad and was spitting out white smoke really bad that burns your eyes I have no idea what it could be if you could help me out it would be much appreciated

@thoroughbreddiesel 9 ай бұрын

If you put the fuel pressure sensor in, it could be working through some air. Recheck all of your connections. Possible you cut the wrong wire on the vp as well.

@JustinHill8elsiervo Жыл бұрын

Hi getting battery voltage to power and ground. The truck wont start. I cracked the lines at the head and it spits fuel. I replaced the lift pump also just in case. What else would cause issues with fuel delivery? I checked with starting fluid as a quick check and the truck starts immediately.

@thoroughbreddiesel Жыл бұрын

If the truck will start on ether then you are either having a lift pump issue or the truck isnt cranking fast enough. Look to replace batteries and move forward.

@derekis1joedirt Жыл бұрын

@@thoroughbreddiesel I don't think that Justin Hill ment that it starts and stays running after starting on starting fluid.

@cjedl 4 ай бұрын

If you’re getting power to the vp44, does that mean everything up to that point is working correctly? Like the ecm? I replaced the vp44 with a thoroughbred pump. I bled the lines, checked lift pump pressure and it reads 21 psi. Not firing up at all. Not sure what to do at this point. Don’t wanna throw more parts at it without a better idea

@thoroughbreddiesel 4 ай бұрын

We will be able to help you diagnose better if you give us a call, 859 737 4966, but lets review this for others that are reading it. So you have power and ground to the VP, you have good LP pressure. The next thing to diagnose would be to see what codes are in the truck. Clear them and then see what comes back when you crank the next time. Is the truck cranking over at the proper speed? If it’s a 98-99 truck, are you seeing tach movement? If not, suspect the crank position sensor.

@cjedl 4 ай бұрын

@@thoroughbreddiesel thanks for responding. Here’s an update. Finally got it to fire but it’s running rough and white smoking pretty bad. I tried to start it the next day and it wouldn’t fire. Running rough and white smoking is what it was doing before the vp44 install so I most likely misdiagnosed the problem. It is an 01. I’ll check the codes tonight.

@cjedl 4 ай бұрын

Had a P1689 code. I cleared it and no codes have popped up after cranking. Hasn’t fired up since. Has no crank position sensor

@cjedl 4 ай бұрын

Starter crapped out. I replaced it and the truck started right up. The truck runs bad and smokes like a freight train.

@garymarek8250 Жыл бұрын

I still can’t get power to pin 7. I have a 2000 Dodge 5.9 Cummins. I did everything you said in the video, no luck. Any other suggestions?

@garymarek8250 Жыл бұрын

When I pull the 20amp engine control fuse, I get a lot of buzzing noises.

@thoroughbreddiesel Жыл бұрын

Would suspect ECM at that point.

@blawsonbl Жыл бұрын

What about a manual truck that I can roll start but not start with the starter? Turns over great. Just won't start.

@thoroughbreddiesel Жыл бұрын

Check lift pump pressure and pull codes.

@bassemrezgui1704 Жыл бұрын

Pls i have ford fiesta 1.8 tddi 2000 no throtlle and wierd sound in the pump and preheating light flashing pls help

@thoroughbreddiesel Жыл бұрын

I am not familiar with operation system on this car, but I would scan the codes first and diagnose based on that.

@charleydaniels6563 Жыл бұрын

So I'm swapping the 24v Cummins with it's vp44 in to a 87 Chevy truck question with the vp run the engine with out the CPU

@thoroughbreddiesel Жыл бұрын

Will need a ECM for sure.

@charleydaniels6563 Жыл бұрын

@@thoroughbreddiesel ok can I swap out the vp44 for a ve pump and make it run

@jamesgoodwinwandagoodwinja5235 6 ай бұрын

Can someone tell how the firing order lays out on the rear of vp-44 where injector lines connect thanks for any help

@jamesgoodwinwandagoodwinja5235 6 ай бұрын

I want to make sure that I haven't crossed some up connecting to pump when I recently replaced pump and was in a big hurry and forgot to mark line on pump side,

@thoroughbreddiesel 6 ай бұрын

Give us a call and we can send you a diagram.

@ThatBurgundy_24Valve 5 ай бұрын

My truck just died going down the road and now will crank but no start. There is power to the pump and i checked the fuses and all is good. My guess is vp is bad.

@thoroughbreddiesel 5 ай бұрын

You would want to check lift pump pressure and check codes before jumping off the deep end and condemning pump.

@ThatBurgundy_24Valve 5 ай бұрын

@thoroughbreddiesel I tried to hot wire the pump as well and no dice.

@edwardtorres8412 Жыл бұрын

What if all relays and fuses are good but still not getting power to the vp44?

@thoroughbreddiesel Жыл бұрын

Suspect ECM or wiring.

@tutehernandez3233 7 ай бұрын

What ECM?

@xxxbadapple 10 ай бұрын

I'm in the process of checking the obvious things but has anyone had a problem with a 1999 or similar gen running great then all the sudden won't start and run? I checked for codes and have 0 codes. It cranks normally and will start but when it does start it run awful like it had a giant cam in it.. then dies a few seconds later. Rinse and repeat. Initially the first time it did it I was able to crank it a couple times and it started and ran fine.. now it won't start and run continuously at all. No pedal either.. I can't help but think its not the VP44 but possibly the PCM / ECM? I've had the WTS issue for a while now. Open to suggestions.

@thoroughbreddiesel 10 ай бұрын

WTS issue as you have to wait for the light to come on before it will start? That’s ECM for sure. I suggest checking tach signal (bad crank sensor) and checking lift pump pressure.

@xxxbadapple 10 ай бұрын

@@thoroughbreddiesel the lift pump is working fine. I'll have to check the crank sensor. Thanks

@supremeautomotive6749 10 ай бұрын

I have this motor in my RV and it starts and runs and drives but has little to no power. Power comes and goes. At 2300 it picks up a little but anything under 2300 rpm power falls out.

@thoroughbreddiesel 10 ай бұрын

Need to check codes and lift pump pressure.

@supremeautomotive6749 10 ай бұрын

@@thoroughbreddiesel sid 254 fmi 8 is the code

@supremeautomotive6749 10 ай бұрын

@@thoroughbreddiesel it runs and drives its weird. Had new lift pump put in but could be not good. How can I check the pressure. I do have laptop to read codes but don't see fuel pressure reading

@andrewstrauss6341 2 ай бұрын

@@supremeautomotive6749 was it the vp44 that failed?? I currently have the same code and the truck starts and idles great. But lacks power. Please let me know!

@supremeautomotive6749 10 ай бұрын

I have a sid 254 fmi 8 code

@thoroughbreddiesel 10 ай бұрын

You have the p0254 code? That will be fuel valve feedback, suspect the pump to be bad.