Problems with my Ford bronco?

Asked by Jun 11, 2016 at 11:11 AM about the 1986 Ford Bronco STD 4WD

Question type: Maintenance & Repair

So, i got a 86 Ford Bronco 5.0 EFI. Auto. It will not
Idle when i first start it. Dosent matter if it 90
degrees out side and the moters warm or its 25
and hasn't been started in a while. It wont idle.
Unless you put it in gear. (Warmed up or cold) then
it idles fine. Thow it in N or Park. Dies wont idle.
Sometimes, rarely. If you drive it around for awhile.
Come to a stop and put it in park it will idle. But the
second you shut it off and start it back up. Wont
idle.. I usely do the work on my vehicles. But i can
not furger this one out any body have a idea?
Excuse me of the grammer. Thanks.

5 Answers

254,545

How old is the fuel? was the truck siting a long time? Time to do the basics, like fluids and filters, spark plugs, wires, distributor cap and rotor, clean the throttle body and IAC.

Fuel is good, hasn't been sitting long its been a daily driver for the guy before me. But this started doing it on him so he sold it. To me. I already went though the basics ...spark plugs, wires, cap and roter. There all new. Havnt cleaned the TBi or the IAC. I might of thought it might be a EGR valve also?

254,545

I wouldn't guess on the EGR, they are around $90. Scan the truck for the codes, some older Fords didn't have a check engine light in the instrument cluster, but you can still pull the OBDi codes.

254,545

http://straighttalkautomotive.com/OBD1/ford-OBD-I.html

Ok, i didnt think it would be a IAC because you can pull one of those out while the car is running and it will still stay running. Im gunna need another person to help me if im going to check it while its running. And keep there foot on the gas so it dosnt die. And i dont have a code reader

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