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Registered
Join Date: Jun 2006
Posts: 152
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Idle Question
85 - 3.2L - Freshly rebuiilt.
Was originally imported from Germany. When I got it, it had O2 sensor, Cat, etc. I changed to SSI, no CAT, no 02 plugged in. Question before I make the drive back to my engine guy. Start up - Give it some throttle so it doesn't stall. All good after that. Idle - 1100 rpm... a little high Acceleration - then slowing down... Idle stays at 1800-2000 rpm. Seems like more often in hot weather. Acceleration... notice more of a fuel smell... I assume because of no Cat. Any suggestions.. step by step trouble shooting. Thank you. |
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Registered
Join Date: Jun 2006
Posts: 152
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One other thing... still awaiting the blower pipe modification to get the heat exchangers connected etc... does the connection of all of the heat hoses affect anything?
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Registered
Join Date: Oct 2006
Location: MYR S.C.
Posts: 17,321
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check ICV. it should vibrate when key is on. make sure it is not stuck open.
did you adjust the throttle stop on the throttle body. that's not really an idle adjustment, air leak throttle switch
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86 930 94kmiles [_ ![]() 88 BMW 325is 200K+ SOLD 03 BMW 330CI 220K:: [_ ![]() 01 suburban 330K:: [_ ![]() RACE CAR:: sold |
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Registered
Join Date: Jun 2006
Posts: 152
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Did some diggIng around the car.
I see the old wire that was connected to o2 sensor. Looks like a single wire. Yet my o2 sensor has a 4 wire plug on it. Hence why it isn't hooked up. Also looked in the engine area. Found a braided vacuum line that isn't connected. See pic. Circled in yellow. Other end goes to back of engine and is just hanging back there. ![]() |
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Registered
Join Date: Jun 2006
Posts: 152
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Found where that hose came off and reconnected.
Checked oil and when oil cap removed there was no noticeable change in sound or rooms. Still 11-1200rpms. |
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Registered
Join Date: Jun 2006
Posts: 152
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One other thing I noticed.
At cold startup up. Starts jumps up to 15-1800 and then stalls. It's fine if I keep foot on the accelerator. Once warm. Starts fine. |
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Registered
Join Date: Aug 2008
Location: sectors R&N, SE Pa
Posts: 3,117
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I agree with T77911S, check and let us know, since:
A broken or misadjusted idle switch could result in higher than normal idle, or the idle control valve might not be doing its job.
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Dan '87 Targa Carrera 3.2 - Fabspeed Cat Bypass, M&K Muffler, SW Chip Venetian Blue |
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