Question about 1999 GMC Suburban

1 Answer

Gm diesel 6 5

Have 1995,3/4 ton,Chev diesel,6.5 engine. Diesel dies at highway speeds. It just starts to surge and I must pull over. Engine starts and warms up ok. At low speeds everything is ok. Changed fuel filters, twice, just pulled off air filter and no change. Had fuel pump on engine checked and at idle it is putting out 1800 lbs of pressure. Anyone out there had a problem like this and how did you solve it. Tks, Richard.

Posted by Anonymous on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

  • GMC Master
  • 45,644 Answers

Pump pressure is too low
should be around the 22,000 psi mark needed to crack the injectors
indicates that the there is a fuel supply problem to the pump or pressure regulation from the pump

Posted on Jul 22, 2017

Ad

6 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

Ad
Papa Chan
  • 56 Answers

SOURCE: 2003 GMC Duramax Diesel won't start

I see that you had the injectors replaced 20,000 miles ago. I would still check the oil to make sure it is not overfull. The new injectors could be bad. If the oil level is not overfull then get a paper towel and touch the dip stick tip on the paper towel while oil is on the dip stick. If it's only oil it will not spread. If it has diesel in the oil the oil with spread. If this test doesn't show the injectors to be bad then you have three other possibilities. The FICM (fuel injection control module), the fuel pressure regulator, or the injection pump. It's hard to pinpoint what the problem is without running more tests and the only way to run those tests is with the computer the dealership has. Just so you know your injectors are still under warranty until 100,000 miles. Most likely you will have to take it to the dealership to get you truck fixed. I hope this helps you some.

Posted on Jan 05, 2009

  • 36 Answers

SOURCE: HARD TO START WHEN COLD AND WHEN IT DOES IDLES BAD AND STALLS.

Try replacing the ignition control module it is located under the distributor cap Cost is around $30.

Posted on Jan 11, 2009

  • 14 Answers

SOURCE: 1992 gmc chevy 350 wont idle when warm

This could be a number of things but i think that your problem sounds like a vacuum leak or an EGR problem. Try listening for leaks and try un-plugging the EGR solenoid valve one time.

Posted on Apr 17, 2009

  • 22 Answers

SOURCE: ok i have a 97 gmc pick up with 5.7 engine i just

if no fuel pressure after filter, replace filter. otherwise check for fuel presure at engine

Posted on Nov 29, 2009

czaa
  • 4536 Answers

SOURCE: i am doing repairs on

better chec the wiring or connections 1st--pull the plug from the pump and inspect for flaws and corrosion then plug back in--pump itself can be tested--the fuel injection pump in engine area may have issues

Posted on Feb 28, 2011

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Hino dutro so5c engine slow to pick up speed and now hard to start.


Search Results

    Diesel Trouble Shooting - Flashoffroad

    www.flashoffroad.com/Diesel/troubleshoot/troubleshoot.htm
    Apr 22, 2003 - Trouble shooting the GM 6.5 diesel engine in Hummers and GM trucks.... and the crankshaft position sensor that will cause a hard or no start condition. ... a pin hole in the system between the tank's pickup and the fuel pump. ... I had a highspeed (60 mph) surge on a 99 td where the rpm would jump up and ...Missing: dutro ‎so5c

    Light-Duty Diesel Diagnosis - Auto Diagnosis Repair Help

    www.aa1car.com/library/diesel.htm
    That's why diesels continue to be a popular option in many pickup trucks ... by the cold oil can reduce cranking speed to the point where the engine may not ... Problems in any of these areas can make any engine hard to start. ... If slow cranking isn't the problem, perhaps there's something wrong with the .... Need Help Now?

    05 international 4300 series power problem - Diesel Mechanic Jo

Jan 18, 2016 | Cars & Trucks

1 Answer

I have a 5.7 Oldsmobile diesel engine I recently chance the head gasket because it was running hot it died on me while I was driving now it would not start back up. And everything back together could it...


If it was running before you did the head gaskets and now it died and won't start, the problem is not warped heads. Your best bet now would be to pick up a copy of Haynes Diesel Engine Repair Manual, part # 10330. This has an excellent section on the GM 5.7, for repair and diagnosing. The book is about $20 and should be available at an auto parts store.
If this isn't an option it would be wise to take it to a diesel repair shop.

Nov 09, 2014 | Cars & Trucks

1 Answer

My 98 isuzu rodeo wont idle and keeps dying then doesnt want to start.


which engine?

2.3 L 4ZD1 I4
2.4 L C24SE I4 (GM, Aus)
2.4 L C24NE I4 (Euro)
2.6 L 4ZE1 I4
3.1 L LG6 V6 (GM)
3.2 L 6VD1/6VD1W V6
2.5 L 4JA1 diesel I4 (Cameo, TH)
2.8 L 4JB1-T turbo diesel I4
3.0 L 4JH1-T turbo diesel I4
3.1 L 4JG2 turbo diesel I4

Jul 13, 2014 | 1998 Isuzu Rodeo

1 Answer

Gm diesel 6 5


Have to service these a lot it's the MAP sensor ( manifold absolute pressure sensor ) this should fixya.

b8f6a7d4-6342-4203-9911-2ab2bef97c0f.jpg

Nov 25, 2013 | 1999 GMC Suburban

1 Answer

Not Starting


You should need go empty on a diesel. You will need to bleed the system for it to start. Some do it on their own from simply cranking. You might try a couple of shots of starting fluid in the air intake. First remove the air filter. The speed of the engine turning runs a fuel pump that pushes the fuel to the injectors.

Nov 24, 2013 | Cars & Trucks

1 Answer

I want a 1983 chevy Suburban repair manual 6.2 L Diesel -- All it says is Model 10 -- 1 ton


You can get the original GM dealer service manual from faxonautoliterature.com. It will have everything includung wiring diagrams in it. I've used them before and had excellent service.
If you are just looking for some help with your engine then Haynes has a Diesel Engine Repair Manual, part #10330 that is excellent for the 6.2 diesel. It's about $20 and covers the 6.2 and the 6.5. It includes a lot of tips that aren't in the GM book, especially up grades to some systems.
Hope this helps.

Mar 18, 2011 | 1983 Chevrolet Suburban

1 Answer

97 GMC diesel just quit while driving on highway


First thing on a diesel problem such as yours, would be FUEL FILTER. On GM diesels a clogged filter affects a diesel even more than on a gas engine. NOW if the filter doesn't cure your problems, I'm afraid tio say the injection pump could be at fault, and thats another story. Hope this helps

Apr 11, 2009 | GMC Sierra 2500HD Cars & Trucks

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

Engine wont start after high speed highway driving when i turn it off


Take off the black plastic that covers the fuel pump.(It is atached to the engine on the left side). There is a grey conector that hooks to the return valve of the pump. It gets hot and looses contact, stoping the engine. There is a factory recall to replace that conector. You can fix it for the moment by umpluging it and twisting a litle the pins with a needle plyer.

Oct 15, 2008 | 1998 Toyota Land Cruiser

Not finding what you are looking for?
1999 GMC Suburban Logo

Related Topics:

28 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

76848 Answers

Freddy

Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22246 Answers

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

Answer questions

Manuals & User Guides

Loading...