1993 Ford Bronco Support Question
1993 Ford Bronco Support Question
Find answers below for this question about 1993 Ford Bronco.Question posted by walker1okmedic on July 17th, 2012
I Have A 1993 Ford Bronco,351-5.8l, It Idles Rough And Wont Idle At Stop Lights
While driving,motor bogs down when trying to acelerate and sometimes back fires.It wont idle at stop lights, have to put it in neutral and rev it up to keep it from dying. Replaced spark plugs,wires,cap and fuel filter, not sure but think it might be a timing issue
Current Answers
Answer #1: Posted by roadrunnertim on July 17th, 2012 7:23 AM
roadrunnertim
Member since:
May 9th, 2012 Points: 1,071,190
Member since:
May 9th, 2012 Points: 1,071,190
You did a good job of eliminating most of the possible causes, so I can only think of two more things to try. I would first spray carb cleaner into the throttle body while the vehicle is running. Spray it in short spurts, so you don't stall out the vehicle. But be careful! Carb cleaner is very flammable. Spray it at arm's length, just in case the truck backfires.
If that doesn't improve performance, I would replace the throttle position sensor (TPS). It should be on or near the throttle body. A dirty or bad TPS would make your vehicle idle rough and even stall. It will also affect acceleration if it isn't working correctly.
Here's what your TPS should look like:
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