I just recently bought this car and I love it. I had an issue with it not starting and changed the fuel filter ( which was very sludgy) and started up and on and everything seemed way better. I went to work today and let it sit 6 hrs and it started fine. But when I started it and at take off it wouldn't go faster than -8 miles per hr. seemed like it wasn't getting fuel and it didnt turn off. I drove it home cruising on idle an trying to hit gas and still nothing.

 

Please copy and paste the diagnostic checklist found here to a new reply to this thrread:
Diagnostic Checklist version 2.0 [10-2009] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

Then edit in the answers to the questions and the results of the test you need to perform(test descriptions are linked in blue).

We really need some more info before wild guessing.

 

The following is a check list of items. A listing for diagnostics, and checkout of common failing items that should be checked for troubleshooting, and before purchasing a vehicle.
When posting, give us the results of the questions below. Links are provided for more clear information (blue underlined text). The more information we have, the more accurate the diagnosis.

Proper troubleshooting and diagnostics
PLEASE, do not just begin reading the forum, and think that just because everyone else had "this failure" I must too. Take the time to properly diagnose before changing parts. If you would like to familiarize yourself with many of the different common issues that are found with the 6.5, read up on the FAQ's.

A word to the wise: If you are a guest reading through the forum, please register and login. Start a thread with the issues you are having and we may help you to verify the issues root cause. If you do not complete a proper diagnosis then you may be spending money on parts you do not need. Please post all of the completed diagnostic steps, rather than just the symptoms without checking. Many of these failures have multiple causes.

Failing to do your homework on the item, and parts changing will create a situation where you have too many variables and may become more difficult to diagnose. Giving advice to someone to just change a part because "it worked for me" without outlining that there should be some diagnostics done does nothing but confound the situation.

This forum is filled with knowledgeable people who dedicate their time to helping to pinpoint the issue. There is a wealth of knowledge housed here within the FAQ's, Search Function ,and the Diagnostic checklist . Use them to the fullest.

Feel free to copy and paste this to the Check List as you begin on the issues you are having. For organizational purposes, please create a new for your vehicle so you don't interrupt someone else’s thread. It just becomes too confusing for all those involved. Please don’t forget to specify exactly what the vehicle is doing.

So to summarize. Do your homework below COMPLETELY. Don't just take for granted something is okay, because it isn't always. Register if you are a guest, and post to verify diagnosis before purchasing parts.

The Diagnostic Checklist:
Please fill out to best of your knowledge.
Answer as best as possible. Alot of these text I haven't gottn aroun too will update.
Any help would be greatly appreciated

1. Describe the problem you are having in detail:
When truck is, it does not go faster than 8 miles per hr, as I hold gas down it revs up and shoots right down like if no ha and continues to do this. I drove home bout 1 mile like this .

2. Year of truck/engine.
1998 gmc surburban slt 6.5 turbo diesel

3. Odometer reading (indicate miles or kilometers).
180665 miles

4. Indicate the model number on the Injection pump (starts DS4 or DB2......).

5. Indicate if you know if it’s a 1500, 2500, 2500HD, 3500, 3500HD.
2500 4x4

6. Do you have an EGR on the engine? (An F or an S engine code 8th VIN digit)

7. Air Filter condition (visual check).
New

8. Fuel filter condition (freshly changed, mileage since changed).
New

9. Location of PMD/FSD? (ex. on pump/remote over intake, behind bumper).
9a. If remote mounted, describe wiring harness (homemade or purchased from which vendor).
9b. Indicate the location and condition of the FSD/IP grounding wire.

10. Outside Temperature (C or F). _____ °
40-50°

11. Service Engine Light while running?- on/off/intermittent
Yes

11a. Service Engine light does glow during start/cranking/bulb check: Yes/No
Yes

12.Have you scanned for engine codes? Yes/No
Yes forgot code will update.

12a. List exact results on engine codes.

13. Condition of Battery terminals (removed, cleaned and tightened).
14. Known condition and age of Batteries.
New

14a. Are batteries a matched set of same age?
Yes

15. Condition of Major Grounds (removed, cleaned and tightened)
15a Have the batteries been individually load tested?

16. Does engine crank, or "turn over"?
Yes

16a. Does engine start and run?
Yes

17. If engine does not start- Crack injector line: do you have fuel? Yes/No


18. Does your Wait To Start light come on?
Yes

18a.Number of seconds WTS light is lit
5-8 seconds

19. Engine Cranking speed (if you have an accurate tachometer).

20. Are you experiencing Stalling?
Yes

20a. Describe the event (upon startup only, down the road, hit a bump, etc...)
Stalls at 8 miles per hour, does not go faster

20b. Do you notice loss of dash or instruments?
21. Check turbo inlet and air filter for obstructions.
22. In a no-hot start, pour a bottle of room-temp water on the injection pump. Does it start now?
23. Lift pump test - Describe results.
Works perfect
24. Upon cold start, does the radiator hose get hard quickly? Yes/No
25. Upon cold start, do you have excessive white smoke? No
26. Do you have excessive cranking time before the engine starts? No
27. Have you used the block heater? Does it affect engine starting? (only try for starting problems).no
28. Are all glow plugs in proper working order?yes

29. During hard acceleration, do you have excessive black smoke? No
30. Do you have any unusual exhaust smoke issues?no
31. Turbo check out - Pass/Fail
32. Indicate fuel that you are using: Bio-Diesel, #2 Diesel, SVO/WVO, other...#2 diesel with Lucas adddative
32a. If running Veggie Oil fuel setup, indicate details of your conversion (homemade or packaged system).
33. Are you using any fuel additives? If so, please list.
34. Upon unscrewing fuel cap, do you have a large vacuum formed in the tank? Yes
35. Do you have any service history available that might pertain to the problem you are having?
36. Please indicate any modifications to the vehicle that might help us diagnose better.

 

Did you do the LP test as described in the link with the engine running?

Where is the PMD?
Where is the PMD ground?

It's a good start but you left a lot of spaces blank.

 

I woke up this morning and went to start and it, I did the lp test and fuel came up. So I warmed glow plugs and it fired right up. I waited bout 5-8 mins and drive it and everything went back to normal. I took it for a drive on freeway bout 30-40 miles. And seemed good. I finally got n ob2 and read code . It says p0216, injection timing control. Might be off timer or maybe needs replaced. Or what other option do I have? Sorry for leaving alot blank , I'm very unfamiliar with alot of questions. Starting from what I kno

---AutoMerged DoublePost---

I'm assuming pmd is located in stock location

 

Stock location for PMD is on the drivers side of the injection pump-usually a grey or black box a bit bigger than a deck of cards.

P0216 is for a timing stepper motor fault most times-the ECM adjusts the timing with it.

It is on the passenger side of the IP and is an actuator that moves when commanded.

 

The pmd is located right behind number and has extension.

---AutoMerged DoublePost---

Bumper*.