1987 - 1996 F150 & Larger F-Series Trucks1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks
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Hey guys..I have a 91 f150 300 6....truck has been hesitating and cutting and almost shutting off out when taking off from a stop and then will take off and will run fine the rest of the time... its getting pretty bad as its doiing it everytime i go from a stop?
would a bad fuel pump do this?
or is it something else?
91 F-150 300 I6 E4OD 250,000k
Member of Pennsylvania Chapter of Ford Truck Enthusiasts
Mmm, TPS most likely, my trucks bucks up a storm from a stop all the way to a little past 2000 rpms. I hate it, everyone on the site has told me it's the TPS, I just haven't got the time or money right now to fix.
Good luck, and hope you get your answer.
__________________ "Ol Red"
1994 F150 XL SCSB
4.9L 300 I6 w/ M5OD
Modifications: K&N Drop In
Future Modifications: 4:10 gears, LSD, Full Exhaust System with Duals, Racing Seats
The throttle position sensor is actually what keeps a vehicle from stalling out when coming from a stop by injecting a little bit more fuel. You can pick a new one up for about 40 bucks. It doesn't take very long to replace.
i'd agree and assume it's the TPS. i just had the same problem that flared up a few weeks back and got worse until unbearable. at first it was my temp coolant sensor causing the engine to think it was running hot, but it wasn't. after doing that 5 min fix, the CEL was still on and the problem persisted. long story short, my buddy came by and read the computer, went and got the TPS, and replaced it. since then, i haven't felt the bog down that was there before. when you do replace it, take your time and remove the throttle body (and replace its gasket while you're at it) to make the install easier.
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