Truck shuddering under power. - Ford Powerstroke Diesel Forum
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post #1 of 16 Old 12-21-2013, 07:13 PM Thread Starter
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Truck shuddering under power.

My truck has started running odd when I try to take off hard or roll onto the throttle really fast it starts stuttering but not really like a miss though. But when I give it throttle slowly and steadily I can wind it up without a shudder any ideas?

1995 F250 4X4 Zf5
  • TS 6 POS Power-Struck Tunes
  • 3" Silverline Dp to Straight Pipe
  • Custom E-Fuel/Regulated Return
  • 6637 Intake
  • Stage 2 180/100's
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post #2 of 16 Old 12-21-2013, 07:15 PM
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Check your drive shaft u joints.

Lee

2000 F250 PSD SCSB 4X4 418k miles straight pipe gauges 2" leveling kit 315/75r16's
6637 with custom intake pipe. TS Performance 6 position chip!
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post #3 of 16 Old 12-21-2013, 07:33 PM Thread Starter
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I guess I should have said like a engine stutter its not like a miss though it just doesn't run right when I try to accelerate hard.

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1995 F250 4X4 Zf5
  • TS 6 POS Power-Struck Tunes
  • 3" Silverline Dp to Straight Pipe
  • Custom E-Fuel/Regulated Return
  • 6637 Intake
  • Stage 2 180/100's
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post #4 of 16 Old 12-21-2013, 07:37 PM
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A stutter from the engine would very much be a misfire.
Is there any other symptoms such as smoke, or cel? Does engine temp make a difference?
does it seem to go away?

Lee

2000 F250 PSD SCSB 4X4 418k miles straight pipe gauges 2" leveling kit 315/75r16's
6637 with custom intake pipe. TS Performance 6 position chip!
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post #5 of 16 Old 12-21-2013, 07:42 PM Thread Starter
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It doesn't seem to do it when cold or not up to operating temp. No smoke or cel light coming on either.

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1995 F250 4X4 Zf5
  • TS 6 POS Power-Struck Tunes
  • 3" Silverline Dp to Straight Pipe
  • Custom E-Fuel/Regulated Return
  • 6637 Intake
  • Stage 2 180/100's
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post #6 of 16 Old 12-21-2013, 07:53 PM
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I honestly dont know then at this point. You have a stutter when the engine is at operating temp and under mild to heavy accel. Do you have gauges (boost, egt, trans) and if so what do they read when this is happening?

Lee

2000 F250 PSD SCSB 4X4 418k miles straight pipe gauges 2" leveling kit 315/75r16's
6637 with custom intake pipe. TS Performance 6 position chip!
[/URL]


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post #7 of 16 Old 12-21-2013, 08:29 PM Thread Starter
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I have a boost gauge and it just don't build boost cause its stuttering when trying to accelerate under half throttle quickly I can hit 20 psi max and that's in a hard steady 5th gear pull on the high tune.When my truck is in any gear running around 2000 rpm the turbo spools I can floor it and it is fine but I can only hit around 10 psi in the first 4 gears.There is no soot on up pipes and boots on y manifold are good. My fuel pressure is a constant 65 psi even under load.My egt took a crap on me I got another one ordered.

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1995 F250 4X4 Zf5
  • TS 6 POS Power-Struck Tunes
  • 3" Silverline Dp to Straight Pipe
  • Custom E-Fuel/Regulated Return
  • 6637 Intake
  • Stage 2 180/100's
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post #8 of 16 Old 12-22-2013, 06:16 AM
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sounds like your hpop is getting week and cant keep up under heavy acceleration

95 f250 eclb 4x4 under construction
96 f250 eclb 4x4 rosewood stage 1 injectors, bully dog 6 position chip, 6637 air filter, idm mod
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post #9 of 16 Old 12-22-2013, 01:47 PM Thread Starter
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Would it be weak even if it is only doing it when warm.

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1995 F250 4X4 Zf5
  • TS 6 POS Power-Struck Tunes
  • 3" Silverline Dp to Straight Pipe
  • Custom E-Fuel/Regulated Return
  • 6637 Intake
  • Stage 2 180/100's
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post #10 of 16 Old 12-22-2013, 01:52 PM
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Maybe depending on the oil. Have someone put it on a scanner that can monitor live data. Then go run the truck and watch the hpop (icp), lpop, ipr, eot, ect, rpm, boost pressure, injector pulse width.
Also check for soft codes that may not be triggering the cel.

Lee

2000 F250 PSD SCSB 4X4 418k miles straight pipe gauges 2" leveling kit 315/75r16's
6637 with custom intake pipe. TS Performance 6 position chip!
[/URL]


Please don't confuse my attitude with my personality.. my personality is who I am,my attitude depends on who you are...
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