Auto mechanic

[PasadenaMan]

My guess is at 1993 Ford F150. Prolly EFI

[stingray]

I was gonna guess its a 93 Chevy w a 5.7k motor (throttle body). If so the TPS or Fuel Pressure reg. may be the issue....just throwing that out there.

[007]

4.3 liter chevy...'91 I believe

[stingray]

4.3 liter chevy...'91 I believe

If it is, I would say the same, the 4.3 and 5.7 in those years use alot of the same parts....

[Primer]

4.3 liter chevy...'91 I believe

92

[Big Game 57]

If the check engine light is on its thrown a code to the computer.Auto Zone has a scan tool you can use to diagnose the code. Just a suggestion? I was a Tech many years, could be a EGR valve also. Need to find the source of the code.

[Red Stikr]

Thanks for the suggestions.We have replaced the plugs,wires(cheap still suspect),coil ,ignition control module,rotor,rotor cap,throttle position sensor.Even pulled and checked control module twice.The O'Reilley people said it has just enough computer controls to be STUPID.But with 200,000 miles she has a right to be a little cranky.It does have an obdll port.No check engine light on.Were at a loss on what to try.I may carry it to get a mechanic to do a diagnostic check.I really hope it's not the throttle body.After market cost is $900 ,oe is $1300.ugh

[Primer]

Took her to a mechanic close by. He said the throttle body needs to be pulled and the ports cleaned. And the MAP sensor is bad, telling the computer the truck is at a higher altitude than it actually is. Which i'm sure changes the air;fuel mixture causing it to run rich and stink. Also there may be smaller underlying problems but these are the big two.