Stalling at Idle
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New User
Joined: Mar 2002
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Stalling at Idle
Need help from the experts. My f-150 just started having a problems idling a few weeks ago. When I start the truck up I notice that
the battery gage swings back and forth and the engine acts like it wants to stall and then will return to normal idle. It will do this for a couple of minutes and may actually stall. I also notice the headlight will get real dim and then brighten again as well. Do I have a sensor problem or something more serious? Thanks in advance for your help.
the battery gage swings back and forth and the engine acts like it wants to stall and then will return to normal idle. It will do this for a couple of minutes and may actually stall. I also notice the headlight will get real dim and then brighten again as well. Do I have a sensor problem or something more serious? Thanks in advance for your help.
Thread Starter
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New User
Joined: Mar 2002
Posts: 2
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Stalling at Idle
My truck is a 1994 with 90k miles on it. I was thinking that maybe it was a sensor on the throttle body. I looked at some other posts with similar problems and they talked about takein off the throttle body and cleaning the carbon build up thouroughly
Elder User
Joined: Nov 2001
Posts: 892
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From: Duluth, MN
Stalling at Idle
Yes...the throttle body cleanup would work, if he was just stalling. But he says his battery gauge is changing. I'de say alternator problem. use a multimeter while the truck is running and check the posts of the battery and the alternator wires to see what the output is. it should be about 12-14 volts when the truck is running...i think that is about right?? if it is lower, replace the alternator...
