2001 Ranger XLT

mmrotw · 08-15-2009, 02:50 PM

Have a problem, 2001 Ranger 3.0L flex fuel, Automatic, 179000 miles but very well kept.
Idles great, no codes, as soon as i hit 3000rpm hunts badly cannot go over 3 grand. Only thing out of spec was fuel pump pressure down 2 psi, replaced pump and sock still no go. I did gain 200 rpm, no vac leaks. Have checked every thing except valve springs ( weak causing valve float?). Any ideas or any one have the same problem.

lapetrarca · 09-17-2009, 05:57 AM

I had this problem about a month or so ago. Turned out to be a crank shaft sensor.

goaliefight · 09-17-2009, 06:25 PM

Had a similar problem problem a while back. I bought a used Ranger and it would struggle to get to 3000RPM but it idled and drove at city street speeds no problem. Turned out to be worn out valves in the engine head. Not sure if that makes sense as I am not a mechanical guy.

Anyway it was covered under the warranty so I got them replaced for free. Hope this helps.