when i push in the clutch the rpms some time stay at 1500 for a 15 to 20 secs when i stop also every once in awhile while idling the rpms drop to like 400 almost dies and catches its self and goes back to 900 the car is stock except gears and ram air mod just got it

 

if the throttle body has been ported he might have ported to much and air is getting past the blades when its supposed to be closed. i had someone port mine and it did the same thing

 

i dont think it has been just got the car a month ago just started doing it last couple days i'll check and see though

 

i would look for vacumn leaks then.

 

checked the throttle body today look untouched a little dirty though whats the bestway to check for a vacum leak

 

with the motor running spray brake cleaner around the intake and listen for a change in the idle

 

TPS sensor is on its way out.. took a long time to throw the code.mine did this as well..

 

i agree with joshie. friend had problem on his camaro

 

sounds like vaccum leak or tps sensor

 

I was told to do this when I had a vacuum leak but it didn't work, there was no change in pitch. I tried spraying it into the intake and it still didn't change. So I used starting fluid and found the leak really quick. If you can't get a change in pitch from spraying around the intake you might double check by spraying it into the intake(behind the MAF so you don't risk harming it) or trying starting fluid. I wouldn't do this on a super hot engine though

 

i'm going to check for leaks today if i cant find any going to go ahead a change the tps thanks for the advice

 

i checked for leaks couldnt find any also went ahead a cleaned the throttle body seemed to help a little but the rpms still drop down to like 400 and almost dies and brings its self back up think the tps is going out going to change it this week any one have anyother ideas

 

TPS should be it. Its a really cheap sensor and takes 10 minutes to change.

If that isnt it then the MAF might be dirty or oily from a filter.

Clean with the appropriate cleaner or very carefully with cotton swabs and alcohol.

 

ok change tps checked for vac leaks are none that i could find still has weird idle when i'm coasting it will stay at like 1700 until i come to a complete stop for a sec then sometimes when sitting idling the rpms drop down to 300 or 400 almost dies any ideas not throwing any codes except the skip shift solienod is bad

 

that happened to me after school once because i left the fog lights on and it drained the battery. it barley started then started doing what yours did. without giving it any gas the car would go 40 miles per hour.
once the batteries charged up i turned it off and started it again and it was fine.

 

I have the same problem but i Have many mods hopefully it gets figured out

 

ok noticed today that the guy that had the car before me striped the battery terminal it stays in but def striped dont know if that would really cause it to do this also the skip shift solienod is bad any body think this would cause it and the coolent sensor is also bad going to fix the coolent sensor this week but didnt really plan of fixing the skip shift since it doesnt make me skip a shift

 

anybody have any other ideas on what this is

 

I'd say start off with the easy stuff. Have the battery tested at autozone or some other parts store. Also try cleaning the MAF wires (carefully). Mine did somewhat of the same thing for a while. It would dip real low while idling or it'd stay high. Had to Jump it one night and it stayed idling at 3200 rpms. Ended up being the battery on mine. I don't have a MAF on my 98 so that wasn't a possibility for me.