[JWahlsten]

I note the two different resistance readings were on a 92 and a 95.  Are there different gauges throughout the production run?

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[Bulti]

We need more guinea pigs! :-)

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[Waylander]

We need more guinea pigs! :-)

Running short for the BBQ?

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[ds968]

What's up with all the differences between the 92 and the 94.5 + production runs ?! If Porsche " perfected " the subsequent years, why are all the 92 models performance stats slightly better than the rest ..? What, did they have a 5 cyl engine and a Hurst trannie ?!

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[Bulti]

Any pig would do, especially if it's bbq-ed, lol.


What do you mean Dan, only got 4 cylinders?

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[flash]

to my knowledge, the performance stats are the same year to year.  they varied from one magazine article to the next, as independent tests can, but i doubt it had anything to do with the year of the car.

 

that being said, it is possible that the 92 rods are slightly lighter than later ones (though the changeover was in early 94), which could make the engine rev a bit more freely.  the programming was also slightly different between early and later years.  i've never done any back to back testing to see if the early programming produced more power, but we know performance chips work, so it's possible

 

back on topic

 

the first thing i would do is determine the actual temp of the engine, using external testing.

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[JWahlsten]

Flash's response was more on topic, but less entertaining than BBQ'd pig...

 

I would like to know if there are temp differences though.  So far my gauges are pretty steady, but the wiring harness was a mess when I pulled it out.

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[chuaed]

Flash - the engine temperature has been tested externally and remains very stable around the 90- 95 degree celsius range.  I know it has to be an electrical or gauge issue as the needle can read as high as 100-110 on a cold start when the car is left to idle for barely a minute.  Temp sender unit has been replaced, all grounds and connectors have been cleaned.  Got myself a used gauge for cheap and both the original and used gauges are still exhibiting somewhat similar behaviors.

 

So either both gauges are faulty or maybe it could be the circuit board behind the cluster that is defective?

 

PS:  I have yet to do a resistance test using Clark's ELECT-19 procedure as i don't have a variable potentiometer in hand!

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[chuaed]

Just to close out this thread proper, my temperature gauge issue was finally fixed. It was the battery ground cable in the rear trunk that came loose. Had it tightened and the reading on the gauge is now perfect.

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[94SilverCab]

Could you point me to that location please?

 

Thanks,

 

Jay

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[Waylander]

the main earth will be right next to the battery, on my rhd car the boot

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[flash]

jay - from the rear of the car, left cubby, toward the rear of the cubby.

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[ds968]

This is only in cabs , correct ? Is there a main ground in the coupe / hatchback area also ?

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[Waylander]

In my car its on the end of the (drivers side for you guys) rear chassis rail in the boot under the carpet that covers the battery

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[chuaed]

Exactly as per waylander described.

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