My car wont go over 2000rpms in drive,PLEASE HELP!

mikekane0982
Wed, 23 Dec 2009 04:03:05 +0000
Maintenance/Repairs

My 1992 Infiniti q45 at first wouldn’t go over 5000rpms when i slammed the gas and now when i just push the gas pedal it wont go over 2000rpms.when its in park or neutral i can rev it up to 7000rpms but then it starts to drop down as i hold the pedal down.when its in drive Icant get it to rev over 2000rpms & when i try to it feals like it wants to go but somethings holding it back and then it starts to jitter & ill stop pressing the pedal & just press it enough to get the car to accelerate a little (around 1800rpms)anything over that & it starts to bog down.It will actually feel like im slowing down then going any faster when i try to push it past 1800rpms.when the car is first started i can get it to go upto maybe 4500rpms and it will accelerate upto that with no issues as soon as it gets a quarter of the way warm it starts with the issue of not wanting to go over 2000rpms.Also the exhaust flutters while idling(its a rough idle)the whole car bounces.under the car the exhaust from the c.c. back to the tail pipe is new.even before the c.c. is new.does this sound like it the c.c.?or something else?the air filter is new.This issue with the acceleration over 2000rpms started 2 weeks ago & is now at its worst.Please Help me figure this out.

11 posts - 7 participants