Car Questions
RepairPal is your advocate for car care advice and guidance

RPM's jump up without acceleration

(2002 Dodge Ram 1500)
in Stuart, FL on August 27, 2009
I need help as no one can tell me what this issue could possibly be as my check engine light is not on. As I am driving, whether in overdrive or not, my rpm's jump up as I would have pushed the gas pedal for a split second. I am at a constant speed though. I even put cruise control on just to make sure it wasn't my imagination, and the rpm's still jump up when driving at a set speed. The spark plugs and wires are new. Computer was updated, air hoses checked and/or repaired. Could it be the TPS, fuel filter, transmission? Thank you!
Displaying 4 answers & 1 comments
Popular Answer
on April 02, 2010
its 2 things. PVC Valve on bak ofintake and IAC on throttle body.. My 02 ram W/ 4.7 did it also..
on February 26, 2010
I had a Durango that would do the same thing. Turned out it was the valve body in the transmission. The engine would idle up while sitting at a light or while driving. I thought it had a mind of it's own.
on August 27, 2009
You need to have a skilled tech drive your car with a scanner that can take a snap-shot of your data stream before during and after the engine 'acts up', then he/she can analyze the data to see what sensor or system is acting up, but not enough to set the Check Engine Light. I do this a lot, so there are shops out there who know how to do this. Best of Luck!
on August 28, 2009
Ok, I will give that a try! Thank you dandd!
on July 11, 2011
i have the same problem
RepairPal estimates are guaranteed at over 2,000 quality certified locations nationwide. Learn more
Didn't find what you were looking for?