[s-cars] RE: Coolant temperature sensor fault causing low boost
TM
t44tq at mindspring.com
Sat Jul 10 23:25:28 EDT 2004
Thanks Brett-
I didn't see any reference to that sensor.
Taka
-----Original Message-----
From: Brett Dikeman [mailto:brett at cloud9.net]
Sent: Saturday, July 10, 2004 10:21 PM
To: TM; 200q20v Mailing List; S-Car-List
Subject: Re: Coolant temperature sensor fault causing low boost
At 10:02 PM -0400 7/10/04, TM wrote:
>Now following the radiator replacement, I've found that I still have a
>low boost problem after the engine is hot- pulled codes and found
>coolant temperature sensor, intermittent fault.
>
>Doing the Bentley diagnostic, it seems like the multifunction temp
>sensor is fine, this doesn't really make sense.
It's referring to a different sensor- back of the block, towards the
passenger side, is the ECU's coolant temp sensor. It's used
primarily(I think) for timing and initial starting- not sure on
either of those, SJM's site probably covers exact functionality. If
it fails, the ECU assumes worst case scenario- maximum measurable
temperature.
On the NA 20v cars, the connector contacts get pulled out, so that
might be worth a check, as might a spritz of contact cleaner.
Oh, also, occasionally someone finds the plugs mixed up since there
are multiple 2-pin connectors there. The intermittent code probably
means the right plug is in the sensor, but if you're feeling extra
paranoid, check the wire colors against the diagrams.
Brett
--
"They that give up essential liberty to obtain temporary
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