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post #1 of (permalink) Old 11-13-2005, 08:25 PM
Kim Blasco
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Full-size 1990 Bronco will not stay running

I have replaced the fuel pump, regulator, egr, throttle position sensor, I am running out of options! It starts up and then almost immediately stalls and seems to have a loss of power when trying to keep it running. Please help!!!
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post #2 of (permalink) Old 11-17-2005, 06:56 PM
**DONOTDELETE**
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Re: Full-size 1990 Bronco will not stay running

Will it stay running if you give it a little gas? if so It may be a idle air motor (aka iac valve).
Also I was wondering if you were changing the parts you listed just on a guess, cause someone said to, or if they tested bad. Hopefully it was the last.
good luck,
post #3 of (permalink) Old 12-06-2005, 10:27 AM
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Re: Full-size 1990 Bronco will not stay running

Have you changed the fuel filter? This needs to be done routinely and can cause this problem.
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post #4 of (permalink) Old 01-14-2006, 01:09 PM
Mud in my Veins
 
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Re: Full-size 1990 Bronco will not stay running

STOP throwing part$ at it. It's the most expensive & least effective way to fix anything. Spend that money on tools, like a fuel pressure gauge (~$35), a digital multimeter ($8-80), a vacuum gauge ($35-50), & a Haynes manual ($14 PN 36058 w/light blue cover). A screw-in compression gauge would be another good investment, but it can wait.

Another important diagnostic tool is a paperclip - use it (or any jumper wire) to pull the codes.
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