raising idle on 96 4cylinder

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Old 14 Dec 2005, 12:09 am   #1 (permalink)
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Default raising idle on 96 4cylinder

I have replaced all the mounts and tuneup and cant get the vibration out
of my car. I played with idle stop screw and backed it out enough that
the car idles at about 850 rpms now in gear and no more vibrations.
Only thing is now Im getting a check engine light(because throttle body
flap slightly open all the time now) Is there anyway to adjust the tps
to my new idle and make the light go away?? Thanks

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Old 14 Dec 2005, 06:26 am   #2 (permalink)
m Ransley
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Default Re: raising idle on 96 4cylinder

Alot of things cause vibrations or poor idle, how complete was the tune
up. Did you check timing, old belts stretch retarding timing reducing
Rpm, milage and power significantly, mine lost 4 mpg from 3 degrees
retarded. Is gas good. Plug wires cap rotor new?. If high octane
improves it you have not tuned it right, try new gas. Is compression
good.

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Old 14 Dec 2005, 12:24 pm   #3 (permalink)
Daniel
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Default Re: raising idle on 96 4cylinder

I think the factory spec. is 800 +/- 50
There is a procedure in the factory service manual for adjusting the
TPS, has to do with checking continuity at the contacts while using a
thickness gauge.

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Old 14 Dec 2005, 02:14 pm   #4 (permalink)
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Default Re: raising idle on 96 4cylinder

The tuneup was thorough. Timing good and gas good as well. I have it
running great now(like new)by adjusting the throttle stop. Now the
check engine light comes on because the throttle plate is always open
more than before. ThanksNel

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Old 14 Dec 2005, 07:31 pm   #5 (permalink)
Mike R
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Default Re: raising idle on 96 4cylinder

I have the same problem with my 4cyl 95.... 63K miles. I'd love to hear the
real solution to this.

" " <porshapower@webtv.net> wrote in message
news:6567-43A07D3B-105@storefull-3331.bay.webtv.net...
> The tuneup was thorough. Timing good and gas good as well. I have it
> running great now(like new)by adjusting the throttle stop. Now the
> check engine light comes on because the throttle plate is always open
> more than before. ThanksNel
>



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