crazy idle HELP PLEASE

[Arcangel2501]

i have a 1998 eclipse gsx that idle's ruff. dose not die or stall out drives fine its just at idle the car sound like it has been cammed it is stock gsx i have check the maf sensor the cam sensor map sensor its throwing 4 codes p0300/random/multiple misfire detected ------ p0100/mass or volume air flow malfunction------p0340/camshaft sensor circuit malfunction------p0120/throttle pedal position sensor/switch a circuit malfunction i have tried not to ask the ? b/c i have been reading on here and tried to solve it myself but im at a loss and need help/ i have pulled the camshaft senor out and it dies fast witch tell me that it works i think i blow air into the maf senor and it try to die tell me that it work i think but when i unplug the camshaft senor it stays running just like it dose with it pluged in i unplug the maf and it idles up and holds. i got lil black spot coming from my exhaust that you can see on the ground when i give it gas. i have cleaned the maf and still nothing the pcv value is good please help

 

[tonyspyder]

check your timing. the misfire code is probably your spark plugs gapped wrong. all stock should be at .028 recheck the gap. check your coilpack. im having the same problem with mines now too. revs at 2000 rpm. did you buy the car like that or what did you do to it to cause this? a bad maf will make your car stall out. unplug the tps and see if that helps. if the rpm doesnt change than thats your problem. the cas code came on because you unplug it while the car was still running. our 2g doesnt have the adjustable cas so its all computerize. if you have a wideband check that. running real rich means boost leak. adjust your tps. im pretty lost myself as of mines is doing the same thing too but if you find anything let me know too. i will let you know by tomorrow what caused mines to rev so high. maybe it can help you out. good luck

tony spyder

 

[Arcangel2501]

i bought it like this got a good deal on it i check the spark plugs and there all good but there black and the tips of the prongs are white

so was checking the iacv and found oil in my boost hose's and in the throttle body would that cause a bad idle and for them codes to be throw turbos must be having blow buy or seals going bad help

 

[tonyspyder]

the code p0120 is the tps sensor i believe. someone correct me if im wrong. here's what you have to do. first do a compression check just to be sure. second do a boost leak check. rough idle i dont know if you have high idle or does the idle looks like its going to die. if it feels like its bogging and is going to cut out that means you have a boost leak somewhere. if idle jumps up and down it is your iac motor. do as i told you too. start your car and unplug the tps. see if any changes happen. im 70 percent sure its your tps sensor. for the cam angle sensor code just erase it. if it was bad you'll be having a hard time starting the car. if high idle than change your tps. adjust it and you'll be fine. for the plugs being white at the tip means its of the condition. its is running too lean right now or too hot. boost leak and check everything. are you using ngk brp7es? try those and have someone check your iginition timing. you could be way off to make the motor run rough. let me know what happen.

 

[mlstraw]

i bought it like this got a good deal on it i check the spark plugs and there all good but there black and the tips of the prongs are white

so was checking the iacv and found oil in my boost hose's and in the throttle body would that cause a bad idle and for them codes to be throw turbos must be having blow buy or seals going bad help

Oil in the throttle body can clog the idle air circuit. A good cleaning will clear it out. I was having similar idle issues when I found my idle screw had popped out.

Mike

 

[Arcangel2501]

ok change the add new tps iacv check for boost leaks fix them change spark plug im getting good spark getting fuel and it still idles at 1000 to 900 back and forth and shakes the hole car still im at a lost my comperssion is 155 across all cyclinders whats next ?????????? fell like using the car for target practices

 

[bigblue3643]

Have you tried running 93 octane with a fuel system cleaner?

 

[Boostin_Spyder]

i have the same problem helppppp

 

[tonyspyder]

check your timing.

 

[Boostdriven]

Surging idle could be caused by having timing to advance which also explains the spark plugs being to hot. Like others told you check timing. The shaking that you feel is not dew to the idle surge but could be because of a broken balance shaft belt, if the car has a lot of miles that's something worth looking in to.