92 Ranger 3.0 high idle and intermittant miss

[slycer2002]

I noticed last night that my 92 Ranger 3.0 was running rough. There would be an intermittant miss under constant load and there was no power when I would step on the gas up to about 30mph. Above that, it was fine. When I stopped and dropped her into park, she idles very high. I can't tell you the RPMs because she doesn't have a tach. I can tell you, however, that if I were to drop her into drive at that point she would do between 25mph and 30mph without my foot touching the gas pedal. Any thoughts would be appreciated. Thanks in advance.

 

[jewalker7842]

Almost sounds like the TPS sensor. Get a voltmeter and see if it is reading the correct voltages. It should tell you what the values are in the Haynes manual. Might want to clean your IAC while you are at it. I don't know if it would cause a miss though. Might want to check for some vacuum leaks those cause some weird issues also.

 

[slycer2002]

Funny enough, she's calmed down and is running better. I don't know what happened, but I'm going to keep an eye on her and see if anything else pops up. Thanks for the reply.