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Project560 Project560 is offline
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Join Date: Nov 2015
Location: Ottawa, Canada
Posts: 68
Garage
Oops!

Rookie mistake - it turns out that I failed to re-connect the auxiliary air valve tube that goes to the underside of the intake J-boot yesterday. Serves me right for rushing.

So I am back to troubleshooting a rough idle condition. I am getting to know my car in the process. I cleaned the TPS, put it back together and re-installed it even though the WOT switch is broken. The idle switch works so I figured it was good enough for testing.

I also checked the resistance on the DME temperature sensor. The reading at -5 C in the garage was 4.78 K ohms.This is higher than the value cited on Clark's Garage for 15 C, so I assume that the sensor is ok.

I also checked the temperature sensor on the AFM. The reading I got was 5 k ohms, which also seems to be in the right range for -5 C.

While it was idling from a cold start, I pinched the auxiliary air valve tube that goes to the j-boot. When totally pinched the engine will almost die. I decided to remove the AAV to see if it is opening fully on a cold start. I managed to remove it without removing the intake. I will keep checking things until I get it running nice and smooth. Thanks.
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Thanks

Andrew
Project 560
1984 Porsche 944 (First Porsche ever)
Old 12-20-2015, 06:06 PM
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