. Does the engine crank, or 'turn over'? yes starts fast and every time
1a. Does the engine start and run?see above
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
1b. Do you have a Wait To Start Light & the amount of time don’t have to but do 1c. Ambient Condition (temperature outside indicate F or C) _98____ °
1d. Engine Cranking speed (if you have an accurate tachometer).
1e. Are you experiencing stalling?yes
1f. If Stalling, describe (upon startup only, down the road, hit a bump etc) down rd after driving it awhile
1g. If Stalling, do you notice loss of dash or instruments?no
-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.good
1.1 Lift pump test (http://dieselplace.com/forum/showthread.php?t=39350)- describe resultsgood new pump from dealer about 3mnths agao
2. Service Engine Light while running?- on/off/intermittent on
2a. Service Engine light does glow during start/cranking/bulb check: Yes/Nono bulb blown
3. Model year 96 3500
3a. Odometer reading (indicate if in miles or km)1 7500 3b. Miles on major engine components if been replaced (example Injection pump)
3c. Indicate the model number on the Injection pump (starts DS4 or DB2......)
4. Have you scanned for engine codes? (varies by pre/post 96) yes/noyes
5. List exact results on engine codes (http://www.dieselplace.com/forum/dtc.php): p1656
6. Air Filter condition (visual check) good
7. Fuel filter condition (freshly changed/condition unknown/mileage since changed) changed 5000
8. Condition of Battery terminal connections (removed, cleaned and tightened) clean tight
8a. Known condition and age of the batteries. New this year
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) cleaned retighten 9. Upon cold start, does the radiator hose get hard quickly? Yes/no no
10. Upon cold start, do you have excessive white smoke? Yes/no no just little
11. Do you have excessive cranking time before the engine starts? No
12. Have you used the block heater, and does this effect engine starting?(only try for starting problems)
13. During hard acceleration, do you have excessive black smoke? Yes/no yes marnine injestors 4in exhaust cold air intake
14. Do you have any unusual exhaust smoke issues? no
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.
18. Indicate fuel that you are using: Bio-diesel, #2 Diesel, #1Diesel, SVO/WVO, other2
18a. If running a VO (Veggie Oil fuel) setup, indicate details of your conversion (homemade, or packaged system)
19. Are you using any fuel additives? If so, please list.
20. Please indicate geographic region you are in: (example: Texas or Canada) north Carolina
21. Do you have any service history available that might pertain to the problem you are having?replace pmd twice new lift pump new ops
22. Please indicate any modifications to the vehicle that might help us diagnose better. 4in exhaucts cold air intake marine injectors
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 no new cap
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 (please specify placement specifically) front bumper
24a. If remote mounted, describe wiring harness (homemade or purchased from a vendor?)vendor
24b. Indicate the location and condition of the FSD/IP grounding wire. Stock
25. Are ALL glow plugs in proper working order as per this thread (http://www.dieselplace.com/forum/showthread.php?t=39182)? Yes


when i drive it over 30miles it starts to cut out then it goes fine for alittle bit then starts it all over again everything seams to be working when this happens i just got the code p1656 today on my way to work

P1656 Wastegate Solenoid Control Circuit

Check your Wastegate Solenoid, that should be on the driver side with a green dot.
This should not caused stalling but who knows.

May want to check the vacuum system also that controls the turbo.

yea i just put a new one on like 2 months ago i think i put the vac hoses backwards would that kill it
UPDATE ::: i notice when it does it when i let off the fuel peddle the rpms drop below a 1000 but when its running fine they drop around 1500-2000 if that helps

could it be the pmd again ???

I know you have new LP? Test it again, also the OPS. If you look at the thread in the last 2 months, there are a lot of OPS issue.

ok tested it lp seams fine ops is new install it when i read the thread about them causeing issuse im about ready to get a ford lol

What is the results? Is it better?

nope same thing it does not shut off now but stumbles really bad only when it reachs its normal temp our when its under a load like goin up a big hill
i order a new pmd the one i got b4 was used see if that does it

New PMD. If LP/OPS is functioning and you still have problem, then PMD is the next one on the list. Make sure you put the resistor in the new one.

will try should be here on the 9th so i willpost up untill then im drivein my jeep its not road freindly zj on 33's locked front and rear regeared and half doors around 8in of lift
god i hope it dont rain

it was the PMD put new on last runs great. waiting on gm send me a replacement waste gate silonode it showing bad i belive i hook the vaccumm lines up wrong.

thanks every one for your help

http://www.dieselplace.com/forum/showthread.php?t=157085
check your grounds, all of them, trust me.

Louis