On Feb 6, 8:38 am, jim beam > wrote:
> wrote:
> > On Feb 5, 1:31 pm, Erdos2 > wrote:
> >> My daughter is reporting some strange electrical behavior with her 91
> >> Honda Prelude.
>
> >> Sometimes when she does one thing electrical, then it affects other
> >> electrical things as well. For example, when she lowers the window or
> >> turns on the wipers, then the radio is affected and lights dim. Today
> >> when she pressed on the brakes, the car died (she only was slowing
> >> down some).
>
> >> She has had no trouble starting the car and the voltage at the battery
> >> is over 12v (I can't remember what I saw when I tested it) when no
> >> load and not charging, and 14.2v when the engine is running. The
> >> battery was bought last July, and the alternator was replace last
> >> summer too. I could not find any wires that were grounding out in the
> >> engine area. The fuse box under the hood did not show any signs of
> >> moisture or arcing.
>
> >> I'm not sure where to look next to solve the problem. Could it be an
> >> electrical relay.
>
> >> Any ideas might help.
>
> >> Thanks
>
> >> Jerry
>
> > Let the engine running at idle. If the idle speed drops under
> > electrical loads, then the throttle angle sensor (aka throttle
> > position sensor or TPS) might be out of adjustment
>
> rubbish!!! never touch the tps - it's set at factory and never needs
> adjusting.

oh my bad!! the sensor is made of magnesium alloy and it's welded to
the throttle body!!

muahahhaha...