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1997 Ford Thunderbird Malfunction - Fuel System
Question: My engine is the 4.6L. With the AC off and engine at operating temperature, it idles at around 1000rpm in neutral. Is there an adjustment to lower the idle rpm? What malfunction could cause this increase in idle speed?
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Technican: Hi;
There is a screw on the side of the throttle body that can be adjusted to idle it down. If you look at where the butterfly is you will see it. .
Owner: Hi,
I found this adjusting screw before I sent in the question. I have it backed off until it is not even touching, so the problem is something else. Anything else you can think of? Thanks.
Technican: Hi;
Get you a can of throttle body cleaner and disconnect the hose a the intake. Revving the engine spray down the intake until is all gone. Then you will see a round looking canister by the intake. Disconnect the connector and set the idle to where the car sounds like is going to die but it doesn't. shut the car off and disconnect the battery for at least 5 minutes. reconnect the connector and battery. Start the making making sure all accessories are off. Holding the brake put the car in reverse and l;et idle for 2 minutes while holding the brake. At this time you will notice that the engine will start surging until it relearns the base idle. . Here's How To Get Guaranteed Solutions In Minutes
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