i just bought this truck for 1000$ bucks its a 95 suburban c2500 4x4 great body just did the interior now to the motor work.. so far i haven't spent and money on the truck besides buying. The truck didn't run right from the get go. when i start it up it has a crazy idle it will red-line for a sec then it bounces from 500 to 1500 back and fourth and will continue to do this until i turn it off. If I hit the gas it does nothing but red-line or doesn't affect it at all. I cant trust any local mechanics cause they all are very stingy and try to take me to the BANK. I know my SBC & BBC & Imports but never a diesel. Never to late to learn. I enclosed the check list. I am welcome to all response's.



hey buddie i saw a couple of forums with your name on them i figured i just cut the bs and pm you directly. i also am gonna create a thread now


0. Describe in detail the problem you are having. Please be as descriptive as possible.- hard to start takes multiple cranks to turn over, when she does start it red lines for a sec then idle drops down then spikes then drop then spikes repeatedly,if i hit the gas it does nothing, when the rpms jump it spits black smoke. got a lil bit of oil on the inside of the turbo.
1. Does the engine crank, or 'turn over'? yes
1a. Does the engine start and run?she starts buts she crazy
1a1. If the engine does not start - Crack injector line (http://www.dieselplace.com/forum/showthread.php?p=2188140#post2188140): do you have fuel? Yes/No yes
1b. Do you have a Wait To Start Light & the amount of time (seconds) lit. no
1c. Ambient Condition (temperature outside indicate F or C) 90-98f_ °
1d. Engine Cranking speed (if you have an accurate tachometer). non
1e. Are you experiencing stalling?stumbling
1f. If Stalling, describe (upon startup only, down the road, hit a bump etc)none
1g. If Stalling, do you notice loss of dash or instruments?nope
-note if experiencing stalling,you must indicate PMD location in #24.
1h. Check turbo inlet and air filter for obstructions. Cone filters have lost disk and stopped air to turbo.
1i. In a no-hot start, pour a bottle of room-temp water on the injection pump. Does it start now? yes/no alwasy starts
1.1 Lift pump test (http://dieselplace.com/forum/showthread.php?t=39350)- describe results
2. Service Engine Light while running?- on/urbf/intermittent nonewhen starting
2a. Service Engine light does glow during start/cranking/bulb check: Yes/No yes
3. Model year 95 suburban 6.5lt
3a. Odometer reading (indicate if in miles or km)201000
3b. Miles on major engine components if been replaced (example Injection pump) fuel pump,batteries
3c. Indicate the model number on the Injection pump (starts DS4 or DB2......) dont know
4. Have you scanned for engine codes? (varies by pre/post 96) yes/no
5. List exact results on engine codes (http://www.dieselplace.com/forum/dtc.php):
6. Air Filter condition (visual check)clear
7. Fuel filter condition (freshly changed/condition unknown/mileage since changed)clean
8. Condition of Battery terminal connections (removed, cleaned and tightened)clean
8a. Known condition and age of the batteries.2 months
8b. Are batteries of differing age or are they a matched set?matched
8c. Condition of Major Grounds (http://www.dieselplace.com/forum/showthread.php?t=157085). (same drill as batt - removed, cleaned, retightened) clean
9. Upon cold start, does the radiator (http://www.dieselplace.com/forum/showthread.php?t=42248#) hose get hard quickly? Yes/no nope
10. Upon cold start, do you have excessive white smoke? Yes/no no
11. Do you have excessive cranking time before the engine starts? yes
12. Have you used the block heater, and does this effect engine starting?(only try for starting problems) none i live in a heater! florida!
13. During hard acceleration, do you have excessive black smoke? Yes/no havnt driven yet
14. Do you have any unusual exhausthttp://images.intellitxt.com/ast/adTypes/2.gif (http://www.dieselplace.com/forum/showthread.php?t=42248#) smoke issues?
15. Turbo check out (http://dieselplace.com/forum/showthread.php?t=39368)- pass/fail pass
16. Do you have an EGR on the engine? (An F or an S engine code 8th VIN digit)F
17. Indicate if you know if it’s a 1500, 2500, 2500HD, 3500, 3500HD. 2500
18. Indicate fuel that you are using: Bio-diesel, #2 Diesel, #1Diesel, SVO/WVO, other
18a. If running a VO (Veggie Oil fuel) setup, indicate details of your conversion (homemade, or packaged system) 1 reg diesel
19. Are you using any fuel additives? If so, please list. none
20. Please indicate geographic region you are in: (example: Texas or Canada) good ole florida
21. Do you have any service history available that might pertain to the problem you are having? nopee
22. Please indicate any modifications to the vehicle that might help us diagnose better. 3 inch cone filter on the turbo
23. Upon unscrewing the fuel cap (http://dieselplace.com/forum/showthread.php?t=42338), do you have a large vacuum formed in the tank? yes/no not sure
24. Location of PMD/FSD (http://www.dieselplace.com/forum/showthread.php?t=39436)? On the pump/remoted over intake/remoted out of engine bay (http://www.dieselplace.com/forum/showthread.php?t=42248#) (please specify placement specifically) stock location of the pmd on the i.p
24a. If remote mounted, describe wiring harness (homemade or purchased from a vendor?)
24b. Indicate the location and condition of the FSD/IP grounding wire.
25. Are ALL glow plugs in proper working order as per this thread (http://www.dieselplace.com/forum/showthread.php?t=39182)? only 6 plugs work. i dont ever see 60 degrees here.

Welcome to the site.

Looking at your symptoms I would have to say PMD failure. Can you find a known good one to plug in and try to start the truck?
Another thing could be the pump itself has gone south, but the PMD is where I would start. Hope this helps.

Spend some time reading up in the 6.5 section regarding these engines. You will be amazed with all the info. you'll find.

Good luck.

i am going to pick up a pmd from a shop down south from me on friday. hopefully it works, where is a good place to find a cheap reman?

PMD are used or new, not reman.
See if you get a buddy in the area who can try a spare PMD.
If the PMD is the culprit, forget the "used but good ones" and buy a new one.
You can find some on eBay for $176.00

That being said, I'd rather vote for an injection pump failing.

But try PMD first, better to try to fix starting from the cheaper...

sorry for clarification i am picking a used pmd to test it out. I meant the reman i.p

Just like matuva said, the IP is more likely the problem.

can anyone recommend me a good place to buy a used or a rebuilt, or is it hard to rebuild, this is a budget buy. cash is tight now as you may know