the first thing you missed is the correct coolant temperature sensor -
there are four - one for the gauge, which you replaced, one for the fan
at the top front (passenger side) of the engine, a cold start switch,
and one for the ECM, sticking out the front of the block if I remember
correctly. It should be directly beneath the thermostat housing and the
connector will have a yellow and a black wire. There are other things
that can cause this code, like the connector being unplugged.
labtech_one wrote:
> before I undertake this project, I thought I'd ask if anyone else has
had
> this
> problem. Here are the syptoms:
>
> 1) car starts poorly ( starts & dies, must keep pumping gas pedal )
> 2) check engine light comes on after the engine warms up some and
> stays ON
> 3) car runs like crap, once it does warm up
>
> I checked the error codes, and get ONLY an error 15 which indicates
> "Coolant Temperature Sensor (CTS) - signal voltage is high"
>
> I have replaced the temp sensor ( the one near the distributor ) 2 times
> just in case of a 'bad' one ( so we've had the original plus 2 NEW ones
in
> there)
> with no change. I inspected the wires as far back as I could in the
engine
> compartment
> and have found nothing wrong ( no breaks or shorts )
>
> In order to inspect further to the ECM I have to pull the inside of the
car
> apart,
> so I ordered a new ECM ( rebuilt from the Fiero Store ) so I don't have
to
> tear it apart again or leave it torn up and risk loosing parts.
>
> I'm working on a 1988 GT - V6, 5 spd ( with stock engine )
>
> Am I missing something ? Is there another sensor that I'm not aware of
?
> Any thing else besides the ECM that could be causing the problem ?
>
>
> Thanks in advance
>
>
>
>
>
>
--
Robert W. Hughes (Bob)
BackYard Engineering
29:40.237N, 95:28.726W or perhaps 30:55.265N, 95:20.590W
Houston, Texas "The city with too much Oxygen"
rwhughe@[EMAIL PROTECTED]
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