At 02:21 AM 7/27/02 -0400, you wrote:
>Hmmm, Tps has been cleaned and that didn't seem to help.
A clean TPS does not necessarily mean that it is not faulty.
The TPS is a 3-wire, variable resistor (potentiometer) that
changes resistance as the throttle opens. A faulty TPS
can cause driveability problems such as hesitation, stalling,
an erratic idle, pinging, hard starting, poor fuel economy and
generally poor engine performance.
The TPS may produce an erratic signal as if the throttle were
opening and closing, causing an unstable and intermittent
hesitation, leaving no trouble code.
>I do have about 3 other Dak owner friends here, but what role
>do their trucks play in getting mine fixed ?
If you suspect a part (eg coil) is causing a intermittent problem,
then borrowing one from someone who does not have the problem
and testing it on your truck is a quick and inexpensive way of
confirming or not confirming your suspicion.
>What would the "lean" on the A/F gauge mean if its the TPS sensor?
If the TPS is open, the computer will think the throttle is closed all the
time.
The resulting fuel mixture will be too lean ana a trouble code that corresponds
to a low-voltage signal may be set.
Bob
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