thegoat2000

i changed the plugs and air filrter and injector cleaner to see if i could get the rpms to stop bouncing at a idle but didnt help what do yall think is rong its not bad its just annoying

nick_n_ii

Can be many things. The year of the rig would help..

thegoat2000

2000 xj with the stupid coil pack

BuckB91XJ

Sounds like your TSP (throttle position sensor) might be dirty, bad or need adjusted or you could possibly have a vacuum leak.

Metmknice

Newer TPS's are plug and pray, not adjustable.

milmat1

Intake Leak Maybe ??? What did the plugs look like ??

thegoat2000

i didnt really look at them they looked normal to me tho nothen out of the norm and wat vacum lines should i check i lookd every were nothen i noticed and the tps is 70 bucks so i kinda want to make sure thats it you no

XJ?2010

this is exaclty what happened to my buddys TJ and it ended up being the TPS i would check that out

thegoat2000

how can i check it without buying the thing first that way i ant waisting money that im tryn to save for my lift

Mudhunter241

get a haynes manual and see what the sensor should read with a meter.... also you can run up to autozone and hook up the scanner.

thegoat2000

i thot there scanor only reads when the check engen light is on mine ant on