Question about Chevrolet Cars & Trucks

Open Question

97 6.5 diesel ecm a fuse blows

Pmd has been replaced and this just happened again for the second time in a week and alt locked and vacuum pump had issue code P0260

Posted by on

  • thomas deutschman Dec 01, 2012

    my truck is A diesel and fuel pump on frame rail and module is call fsd/pmd

×

5 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

MobyMech
  • 106 Answers

SOURCE: 5.9 DIESEL ENGINE CUTS OFF WHEN DRIVING

Hi

From what I can gather, the engine cuts out and then the check engine light comes on, not the other way around, check engine light and then cut out?

If you switch on the ignition but do not start the engine, you will see that the check engine light is on. It won't go out until you start the engine.

When the engine cuts out, it is just as though you have switched on the ignition without starting the engine, the key is in the exact same position, and therefor the check engine light comes on purely and simply because the engine isn't running, not because it has sensed a problem, hence you have no fault codes, its perfectly normal.

If, however, the light comes on then the engine cuts out, then the reason for the lack of codes could be a short term electrical failure. If the power to the ECM were briefly cut then the codes would be erased immediately, but this would have to be a complete failure because there is a KAM (Keep Alive Memory) wire, which supplies permanent power to the ECM if I'm not mistaken. A good candidate for a complete failure is a bad main ground cable (loose or broken).

Wiring problems a just the worst ever to trace.

Just a thought to hopefully point you in the right direction.

Very best regards

Geordie

Posted on Jun 10, 2008

  • 21 Answers

SOURCE: code po370 po238

put a mechanical fuel gauge and long fuel hose on the bleed valve on water crossover run it in the cab and opserve pressure, should be 3 psi at idle and min 1 psi wide open trottle. on steady run fuel pressure should stay steady too,about 3-4 psi, if it fluctuates from o psi to whatever, it could be interupted power to the LP. failing OPS ??
Try above first.

what are the codes for??

Posted on Jul 12, 2008

  • 958 Answers

SOURCE: 20 amp ECM B fuse

check again the fuel pump. check the resistance if too low. or unplug the pump and put a fuse again, if the fuse will not blow, then the pump went bad again.

tnx 4 using fixya,

drcool

Posted on Oct 27, 2008

centralvalle
  • 386 Answers

SOURCE: ecm fuse keeps blowing

just fixed this problem, change your fuel pump module, fuel sending unit shorts out on fuel level swing arm blue wire... unfortinately you must replace it as unit because of the design, fuel pump and tank guage fuel level sending unit are a one peice item, fuel tank has to come out to change unit, about a $ 700.00 repair too... fuel pump module runs about 350 to 700 $ depending on aftermarket or factory, try to find one with a lifetime warranty even if it is $ 50.00 more worth it..labor is about $ 250 to $ 400 depending on shop labor rate... definate problem though I ahve no doubt, common problem on GM... please rate my help, thanks...

Posted on Aug 06, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Has anyone experienced this before?


Engine Stalls

taken from:
http://flashoffroad.com/Diesel/troubleshoot/troubleshoot.htm
Here is an easy way to zero in on a stalling problem.
If it feels like someone reached over and turned off the key and it fires back up right away it's the injection pump.
If the same thing happens but it has to cool down before restarting it's the PMD / FSD(pump mounted driver).
If it stumbles and than stalls then it is air in the fuel lines. If it is this one try switching fuel tanks and just turn the key to run but don't start the engine. Listen to the fuel pump for a change of noise pitch. The pump is really loud when the pump is out of fuel and will have a muffled sound when pulling fuel. Sometimes the baffle in the main tank will brake away from the tank and the pump will suck air when the tank is just off full.
Also check for vacuum lock. If the fuel tank vent is plugged air can't get into the tank to replace the fuel that's drawn out. Remove your fuel cap and see if the truck runs.

Apr 04, 2015 | Cars & Trucks

10 Answers

Duramax diesel engine


Just a thought, the pump has a check vale in it that keeps the fuel from draining back when the engine is off. If the check valve is bad, then the fuel drains back and creates an air pocket that doesn't allow it to pump the fuel, basically it create a vacuum lock in the pump so no fuel can get through it. So, you can't rule out the pump completely just because it stays running. Now I know that I'm just a computer tech here and the 6 years of shop foreman as a auto and diesel mechanic don't count, but it's a thought.

Sep 04, 2008 | 2001 Chevrolet Silverado 2500HD

2 Answers

95 chevy blazer keep blowing the ecm fuse


If it "keeps" blowing the ECM fuse, it is because you "KEEP" replacing the fuse without diagnosing and repairing the reason the fuse is blown.

Please review these articles:

Where's The Fuse?

What Else Could Be Wrong?

What To Expect From An Online Car Expert

Jun 04, 2011 | 1995 Chevrolet Blazer

1 Answer

I have a 6.5 diesel turbo, When i run it it trys to stall some times more then not,, so i put a new pmd modual and it still dose the same i brought it in and had it on a scanner and they said that it was...


Hi and welcome to FixYa!

The newly installed pmd may be faulty too. Try to replace it again and if still fails then try to replace the car's computer. The computer acts like a brain of the car that when it's faulty something will surely fail.

Hope this helps and thank you for using FixYa! Have a good one!

Mar 05, 2011 | 1996 GMC Sierra

1 Answer

I own a 2004 Isuzu Rodeo 3.2L V6 2WD. On saturday it died on me. at first i thought it might be the fuel pump because the engine turned over but wouldn't engage. Gas level was good as was the battery. ...


my problem was electrical, removing the batt (neg. terminal) for a few seconds resets the Engine Control Module (ECM) which operates the full pump relay, there should be a fuse in the relay box in under the hood labeled ECM or ECU. Pulling that fuse for 10 secs. or so also resets the ECM, try this and if it immediately works I suggest to drive it locally until it will not start again and repeat the removal of the ECM fuse. If this work out I suggest that you ECM is receiving a sensor signal to shut down the pump relay so I've been told, is the check engine lite on

Dec 07, 2010 | 2004 Isuzu Rodeo

2 Answers

Truck Stalls


No need for guess work.
You can run a wire from the fuel pump positive to a dash an LED with a resister on it so it can work with 12 volts. Then you will see if the pump is getting voltage or not. This will allow you to eliminate ECU, relay, and probably the PMD (depending on exactly what that is).

But this does not discount the need to check things like the fuel filter, the gas tank vent or purge valve, etc. And you should still check the fuel rail pressure. It would not hurt to have a dash gauge for the fuel pressure as well.

Mar 30, 2010 | 1994 Chevrolet K1500

1 Answer

97 chvy 5.0 -ECM B fuse blows - Wont Start - Replaced ALL parts


that red wire is a test lead to jumper the fuel pump to test it.if ecmb fuse keeps blowing my guess is your ecm has a short in it,in that case it can be purchased at oreillys

Mar 28, 2009 | 1997 Chevrolet C1500

3 Answers

My 1995 chevy 6.5 L diesel dies at highway speeds. Why?


I could bet 99.9% with out seeing the truck my self that your probelem is the PMD I have two of these trucks and know many people that also have them and the vast majority of problems with the Chevy 6.5L diesels are from the PMD. A must when replacing the PMD is moving it from its place on the injection pump on the top of the engine to a place that dosent get so hot. A good place is the front bumper or skidplace, search for Heath Diesel they have a kit to move it. Its worth every penny.

Justin

Jan 26, 2009 | 1995 Chevrolet K2500

1 Answer

ECM BATT fuse keeps blowing


That fuse provides power for the fuel pump. Either your fuel pump is blowing the fuse or there is a shorted wire.

Nov 22, 2008 | 1995 GMC Jimmy

1 Answer

Keeps blowing fuse


disconnect your glow plug relay and try it, the relay may be shorted out

Oct 25, 2008 | 1997 Ford F250 SuperCab

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

66 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

75117 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

7772 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...