Question about 1993 Ford F150 SuperCab
I have a 1993 ford f150 2wd w/ a L6 engine i start it and it sputters to stall and if i nurse the gas peddle it'll stay running and after a fiew mins itll stay running for a bit but then gets rough again and eventually stalls sounds like it's backfireing into the exhaust and the rpms surge. if i open it up on the highway it's fine untill i get back down to in town speeds. then again sometimes it completely clears up and runs fine.. no check engine light comes on or anything. ive pulled the air bypass valve apart and cleaned it on the advice of others and it didn't help. tapping the map sensor on advice of others didn't change anything either. blocking egr valve off didn't change anything. and as far as i can figure there is no MAF sensor anywhare between the air cleaner and the air intake.. i have no clue what else..
Unplug the engine coolant temp sensor. 1 for the ecm, not the gauge. It may be way off and causing engine to run very rich, thinking it's cold all the time. At highway speed, you're using enough to get by. If not the answer, uplug MAP sensor and try that. It could think you're in outer space or way below see level. It's black rectangle with vac hose going to it. boo switch and o/d cancel switch errors were likely you not actuating them during koeo test. Others could have been cause by other previous.
Posted on Mar 28, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Jan 02, 2014 | Cars & Trucks
Dec 26, 2011 | 1993 Ford F150 SuperCab
Sep 11, 2011 | 1993 Ford F150 SuperCab
Jun 16, 2011 | Chevrolet Camaro Cars & Trucks
May 28, 2011 | 1993 Ford Festiva
May 20, 2011 | 1993 Chevrolet C1500
Jan 19, 2011 | 1991 Ford F150
Jul 08, 2014 | 1993 Ford F150 SuperCab
729 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: