vibration @ 2k & up

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Jan 29, 2009 | 04:29 PM

84-250

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From: Munroe falls, Ohio

vibration @ 2k & up

revving the engine in neutral, there is a vibration that starts getting noticeable around 2k rpms. Around 3k the truck is shaking pretty good. As far as I know the injectors have 184k on them, the dmfw has been replaced with a valair smfw awhile back. Its a 94.5 so I cant run a contribution test or buzz test(that I know of). I've had the truck not vibrate before doing the same test.
Ideas?

Jan 30, 2009 | 04:56 AM

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From: Munroe falls, Ohio

I was thinking of getting the pcm flashed so I can get OBD2. Then get the scangauge from aeroforce or joey to run some tests.

Jan 30, 2009 | 05:44 AM

scatgo

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From: Long Island, NY

I have a 94.5 that I used a OBD2 code reader on before. Do you know for sure you need to get the PCM reflashed?

Jan 30, 2009 | 06:46 PM

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From: Munroe falls, Ohio

I dont know for sure if I need the reflash.

Mar 9, 2009 | 05:45 PM

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From: Munroe falls, Ohio

any other ideas?
1300rpms physically shakes shifter, slow but hard
calms down at 1500
at 2000, shifter buzzes/rattles
increases in volume/frequency all the way till redline.
feel the vib in the seat also.

trying to setup a time to meet with dzljim to run AE soon.

Mar 9, 2009 | 05:54 PM

Cuda_jim

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From: MICHIGAN

Stick shift??? DMF clutch will do that when it's on it's way out.

Mar 9, 2009 | 06:21 PM

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From: Munroe falls, Ohio

nope, valair smfw

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Mar 10, 2009 | 04:11 PM

84-250

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From: Munroe falls, Ohio

Does anyone make bellowed uppipes for the OBS yet? I think one is seeping, Drv side upper. Leakage just means less boost and less power,correct. Does it effect mileage also?.