a little while after i got my car it started not idle'ing, i cant pinpoint what time exactly. ive been looking for hoses that arent connected but i cant find any. when i start the car it will run great as long as i have my foot on the pedal.. as soon as i take it off the rpms just drop and die. i could diagnose a rough idle with the FSM but i cant even get it to idle. where do i start? ive adjusted the TPS.. it is correctly adjusted. before it just stopped idleing at all, it would idle hunt.. up and down up and down. i assumed it was a vacuum leak. i have a FMIC and my afm is in front of the FMIC.. between the FMIC and the TB, so it wont matter if theirs a leak inthe TID. id just like to know some diagnosing procedure besides looking for air leaks. thanks guys
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If it's an 87 88 make sure the AFM is level, otherwise it has problems functioning. Adjust the idle up with the idle adjust screw on the tb. Don't turn it a lot, but turn a quarter turn to the right, and then keep going until you can get her to idle. What was she idling at beforehand? Buy some starter fluid, and once you have her idling, spray around any hoses, gaskets, any place air could get in, injectors as well as the grommets could be cracked. If the idle dips when you spray a place check all hoses caps etc in that area, replace them if they look worn.
- Hand |
Could it be that your throttle cable is just too loose?
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On at least an 87, There is a hose that comes off a metal tube behind the TB. This hose goes into the air intake hose before it enters the TB. Tough to explain, easier to show. If this is not hooked up, the car will not idle at all. It will start and rev but then just die.
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Here is another angle of the hose going into the air intake.
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Check all the vacuum nipples on the side of the UIM.
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sorry i didnt say what car i have.. its a 87 TII.. so some of what said doesnt apply i guess..
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Did you remove emissions? also my throttle cable was bad and it would stick and when i let off the gas it would push the pedal backwards and the car would kill. new throttle cable worked... https://www.nopistons.com/forums/pub...#>/biggrin.png
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Even if the throttle cable was too lose, it would hold idle. The screw on the throttle body plates would keep them open enough to idle.
- Hand |
Originally Posted by imloggedin' date='May 5 2004, 01:33 PM
sorry i didnt say what car i have.. its a 87 TII.. so some of what said doesnt apply i guess..
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i looked at every vacuum line tonight, found one that was off.. hooked it back up.. still wont idle. runs great but wont idle lol. im thinking about removing the rats nest, just get it done and forget about vacuum lines! wish i had a good writeup though.
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were u dumb like me and play with the variable resistor, I did then my car wouldnt idle until I fixed that.
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ive tried my variable resistor every way.. i do have a question about that.. turning it right makes it richers or leaner? and turning it left?
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Originally Posted by imloggedin' date='May 6 2004, 05:14 AM
ive tried my variable resistor every way.. i do have a question about that.. turning it right makes it richers or leaner? and turning it left?
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Turn the idle adjustment screw on the tb to the right, and see if it will idle. If it does then you can check everything with carb cleaner.
- Hand |
wheres the idle adjustment screw on the tb.. and i thought with the variable resistor that r = rich and l = lean.. right would be clockwise
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On an N/A the idle adjustment screw is directly on top of the TB. On a Tii the idle adjustment is on the BAC, I think.
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