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Old 03-28-2007, 11:50 PM   #1
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irratic idle speed

I have a 2000 2.7 boxter and when the car is on tick over the revs drop then pick back up to the correct tick over speed.This happens all the time.Any ideas???

Last edited by PMCHSS; 03-29-2007 at 12:22 AM.
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Old 03-29-2007, 01:25 AM   #2
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If you don't have a check engine light for a vacuum leak, it sounds like the throttle body needs cleaning. While you're at it, you might want to clean the MAF.

Search this site for instructions.
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Old 03-30-2007, 01:49 AM   #3
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Quote:
Originally Posted by Schnell!
If you don't have a check engine light for a vacuum leak, it sounds like the throttle body needs cleaning. While you're at it, you might want to clean the MAF.

Search this site for instructions.
I did hear a sharp wooosh noise a while back when i accellerated hard.Sounded like a pipe bursting.Could this be the cause do you think?If so how would i check.
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Old 03-30-2007, 08:31 AM   #4
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How about the idle control valve? Linky here: ICV
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Old 04-09-2007, 11:15 AM   #5
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any good DYI for e-gas model?

Hi,

My Box is suffering from the same problems:
Irratic idle speed: revs are somewhere between 700 and 1,500 while in idle and from time to time it also throws in a P1128

So I would like to
a) check for vacuum leaks
b) clean throttle body

HOWEVER,
A) I haven't found any good DYI for e-gas models, are there any out there?
B) Does anyone have a good picture which will help me identify the vacuum hoses?

Thanks
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Old 04-09-2007, 11:32 AM   #6
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Please excuse the filth.



See the above pic. In the center is the throtle body. Simply disconnect the hoses at either end and remove the bolts which mount the throttle body to the intake manifold. Unplug the electrical connector and the throttle body should be free.

Use a commercially-available carburetor cleaner to remove all the gunk buildup inside the throttle body, being very careful to not get any inside the stepper motor attached to the side. The easiest way I know of to prevent stepper motor contamination is to hold the throttle body with the stepper motor at the top so no carb cleaner runs down through the small hole for the connecting shaft.

You should also be able to push the plate open a little by hand to clean the edge and where the plate makes contact with the throttle housing. Reinstallation is the reverse of removal.
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Old 04-09-2007, 12:31 PM   #7
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Many thanks, that looks easy enough
You wouldn't by any chance have a photo which shows me the vacuum pipes as well?

Thanks again

Quote:
Originally Posted by Schnell!
See the above pic.....
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