Car idle at 500 rpm and vibrateing alot

[97 Talon Kid]

I'm driving a 97 talon N/T and when i start it in the morning it idles at 1k rpm then slowly drops to 500 rpm and starts vibrateing what's going on??????

 

[oxygen800r1]

same thing's happening to me in my 98 gst.
checked the alternator,
changed belts, grounds, battery and plugs/wires.
tomorrow i'm going to switch out the coil and see if that does it.
other than that i'm at a loss too.

 

[97 Talon Kid]

Also sometimes it tends to get an idle surge and the car idle drops to around 50-100 rpm
and raises to 500 or so.

 

[THE_ARTIST_]

its probibly vibrating because the idle is so low. check the belts and see if they are on good. and do you have a CEL?

might be somthing with the Fuel pressure

 

[97 Talon Kid]

what's a CEL? and what about the fuel pressure could be messing up the injectors or fuel pump because if I run the car hard it will start to stall at random..

 

[punishercb]

I had the same exact problem with my dodge avenger, which has the same 420a engine that you do. I used a can of throttle body cleaner and I haven't had a problem since. Just take off the intake hose, manually give the engine gas by turning the throttle valve while spraying so the engine doesn't die.

Good luck

 

[97 Talon Kid]

I've done that I actully just did that the other day but it's stalling my problem sence i've had the car and I took it to a mechanic and he said it was because the throtle body was all black and gumed up. So they cleaned it the problem went alway for a day and started back up and the cleaner had done nothing yet to this point I'll post if anything else happens.

 

[Tsi_User]

my guess is they did a bad job cleaning the TB or the throttle cable is shot.

Seeing that the problem went away for a DAY pretty much means it has something to do with the TB/throttle cable IMO

 

[THE_ARTIST_]

my guess is they did a bad job cleaning the TB or the throttle cable is shot.

Seeing that the problem went away for a DAY pretty much means it has something to do with the TB/throttle cable IMO

agreed, if it went away then more than likely thats the problem. and CEL = Check Engine Light