1988 F150 302fi

**legend** · 04-11-2004, 08:10 AM

When I am moving down the highway my truck wants to cut out on me. It is noticable just when maintaining speed but gets worse when I step on the accelerator. It is not evident when I am idling. I have changed the gas filter, spark plugs, wires, and I ohm`d the injectors with a meter and they were all comparable, though I am not sure if that means anything. The truck has over 100000 miles.
Thanks in advance for any help.
legendhusk@juno.com

**rtbrick** · 04-11-2004, 08:52 AM

I would go and purchase a $12 Chiltons or Haynes manual at your local auto parts store. They are usually pretty good with trouble shooting.

**NEW AGAIN** · 04-11-2004, 10:06 PM

Check here for technical problem www.alldata.com

**FiveOhMustang** · 04-13-2004, 08:31 AM

legend i have 302 in my mustang, and i have been working on the all mighty 5.0s for a while, well my short 21 years haha, id say check the distributor, fuel pump,fuel filter

**CharlesW** · 04-13-2004, 08:41 AM

Could even be a restricted catalytic convertor.
Could be so many things that it is very difficult for a DIY solution.
With the advent of all the electronics, I have about given up diagnosing and fixing anything but the most basic problems.

We once worked on a Chevy V-8 for 3 weeks before taking it to the repair shop. They hooked up their multi thousand dollar diagnostic machine and found the problem in 2 minutes, fixed it in 10. It was the ASC (Automatic Spark Controller). I didn`t even know what it was let alone what it wasn`t doing correctly.

Sometimes you are better off going to someone with the right equipment to find your problem.

Charles

**elortt** · 04-13-2004, 09:21 AM

Are you getting a check engine warning light / If so you can take it to your local Autozone and they check the troublecodes for you and tell you exactly whats faulting / I have relied on them for 3 other repairs (O2 sensor, EGR Valve, Mass Airflow Sensor) all different vehicles, and they were right each time.

Eric

**legend** · 04-14-2004, 02:15 PM

Thanks for the reply elortt. For 97` and up autozone can check the codes because all vehicles have a generic diagnostic plug but my mean machine is a little too old. Thanks.
I did get a web site from another forum that will help a lot and I am going to try and get the codes myself per the instructions. It looks pretty simple even for me.

.http://fordfuelinjection.com/index.htm