Throttle position sensor/circuitry checking w/resp. to poor fuel econ.

Ameer Antar antar at
Wed Sep 10 12:10:28 EDT 2003

I think it should be easier. Also I think whenever there's a possibility that there's fault, it should be tested, b/c working on older cars is just a process of elimination, especially when looking for subtle problems in complicated systems. I would also check out the TPS. You never know, maybe some carbon may have broken free from the internals, which would cause an uneven resistance at certain changes in position. All you have to do is hook the TPS to a voltmeter and make sure the wiper pin of the TPS has voltage that goes up and down smoothly as you open/close the throttle. I would think the Bentley is right. There must be some flow diagram or some fixes to try...


---Original Message---
From: Matt twentyV <matt_20v at>
Date: 9/9/03 7:44:16 PM
Subject: Re: Throttle position sensor/circuitry checking w/resp. to poor fuel econ.

> I was going to run a parallel wire outside the
> harness just for a check.  I
> betting well have the same voltage - maybe not.  I
> don't think it is wiring.
> It is like 3.5 V comingdirectly out of ECU rather
> than expected 5V.

Wouldn't it be much simpler to just use an ohmmeter
to check resistance between the TPS and ECU


Do you Yahoo!?
Yahoo! SiteBuilder - Free, easy-to-use web site design software

More information about the 200q20v mailing list