Cold Start & Idle
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New User
Joined: Feb 2005
Posts: 14
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Cold Start & Idle
Hey Guys,
Since installing some upgrades to my '92 Bronco, it's having some trouble in the colder weather. On initial start, the truck starts right up, idles @1100 then dies when fast idle kicks off. Re-start idles @1400 then is ok @ 600 when fast idle kicks off.
My motor has the following:
Thanks for your suggestions.
Chris
Since installing some upgrades to my '92 Bronco, it's having some trouble in the colder weather. On initial start, the truck starts right up, idles @1100 then dies when fast idle kicks off. Re-start idles @1400 then is ok @ 600 when fast idle kicks off.
My motor has the following:
5.0L 302 HO
Stock Heads w/ short side raius porting
Comp Cam 35-255-5
Summit Shorty Headders
Stock Y-Pipe
Open Cat
Single Flowmaster
I'm guessing the engine is flowing better now and has thrown off the speed density mappings, but that's just a guess.Stock Heads w/ short side raius porting
Comp Cam 35-255-5
Summit Shorty Headders
Stock Y-Pipe
Open Cat
Single Flowmaster
Thanks for your suggestions.
Chris
Elder User
Joined: Aug 2004
Posts: 646
Likes: 3
From: Derbyshire, UK.
first thing, check for codes. This will save a lot of guess work.
I have the full Ford manual for 92s so if you get the codes and any other symptoms I should be able to sort out a full troubleshooting guide from it.
Simon
I have the full Ford manual for 92s so if you get the codes and any other symptoms I should be able to sort out a full troubleshooting guide from it.
Simon
Thread Starter
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New User
Joined: Feb 2005
Posts: 14
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I checked for codes in the late November time frame, nothing came up. I'll try again and see if there is something stored since.
The truck runs great otherwise, just anything below, I'd say 35°F gives it problems for the first couple minutes.
Thanks
Chris
The truck runs great otherwise, just anything below, I'd say 35°F gives it problems for the first couple minutes.
Thanks
Chris
Junior User
Joined: Jul 2005
Posts: 99
Likes: 0
From: Eglin AFB
check for vaccuum leaks and also check your idle air control valve. you can check it with a 9 volt battery. just get some wires and hook them up to the leads and then hook it up to the leads on the idle air control valve if it is good you will here the cork pop.
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New User
Joined: Feb 2005
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Just wanted to follow up with the resolution. Talking to the guy at the parts store he suggested a coolant temp sensor, it was cheap, $16 compared to $65 for the idle air control valve. So I went for the coolant temp sensor since it was probably never replaced anyway. The truck starts gret in the morning now. He also said that it could help my mileage. I filled up the tank last night, so if things look good there as well, I'll let you all know.
Thanks!
Chris
Thanks!
Chris
