S4 Temp 1
11-13-2006, 09:07 PM
#1
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S4 Temp 1
Having owned a '86 "S" MY 928 I thought I knew where to find the Temp 1 sensor. Of course Porsche had a "better idea" and apparently relocated it on the '87 "S4" MY. Can someone help me out and identify the new location of the thing??? 
11-14-2006, 05:17 AM
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Temp 1 is not the same as the thermo switch. Temp 1 is a thermistor, the thermo switch is a ......temperature switch.
Temp 1 which measured inlet air temp was deamed not necessary with the more capable ECUs fitted to the > 87.
The thermo switch just switches on the engine fans if manifold temp rises above about 90degC (even when igntion is off.
Temp 1 which measured inlet air temp was deamed not necessary with the more capable ECUs fitted to the > 87.
The thermo switch just switches on the engine fans if manifold temp rises above about 90degC (even when igntion is off.
11-14-2006, 07:47 AM
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Oh, jeez, we just went through that about a week ago. Thanks, John. I have either selective or failing memory. Once the cars were fitted with knock sensors in 87, the temp 1 sensor, which retarded timing at high intake temperatures, was eliminated. The other switch, which I pointed out, relates to fan control. Nevermind.
11-14-2006, 07:58 AM
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Hi Bill,
Well your memory is better than mine as I couldn't readily remember the exact reason why Temp 1 was no longer needed :-)
OMG - I just noticed this is post # 2001.......!!
Well your memory is better than mine as I couldn't readily remember the exact reason why Temp 1 was no longer needed :-)
OMG - I just noticed this is post # 2001.......!!
11-14-2006, 04:43 PM
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OK... thanks girls!
Now.................
Is this "thermo-switch" necessary on a twin-screwed induction system?
If so, where do you recommend that it is mounted?
(I was going to ask "Where do you recommend that I put it?" but I'm getting smarter than that!
)
Now.................
Is this "thermo-switch" necessary on a twin-screwed induction system?
If so, where do you recommend that it is mounted?
(I was going to ask "Where do you recommend that I put it?" but I'm getting smarter than that!
)