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Old April 12th, 2012, 10:50 PM   #1
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Idle Issue


Ok im having a idle issue and im not sure on what route to take. iac, maf, tps.... where to start. car is basically a stock 5.0 with a cobra upper and lower intake, full exhaust, and a intake. has 9mm ford wires msd cap and coil. and the egr has been deleted. now as far as the idle goes. its rough. the rpms drop down and go back up. rpm also drops when i turn the steering wheel. sometimes dies if i dont give it gas if the wheel is turned all the way. Heres what i checked out. when i pull the plug on the iac the car dies. when i pull the plug on the maf the idle stables out for a few seconds then starts to get rough and the car will die. i checked my firing order and everything is good. the exhaust also smells like its running rich. now as far as checking the timing. someone put a adjustable timing pointer on there so who knows if its set right. on that subject anyone know where it should be set at or have a picture of there adjustable pointer so i can compare them? I would really like to figure out whats causing the rough idle. i would also like to figure out why my rpm's drop slow. its a standard car and when i push in the clutch it seems like rpm/s drop slow. any ideal would be great. thanks
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Old April 12th, 2012, 10:57 PM   #2
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Sounds like your ignition module in the steering column may be on its way out. Also, as far as the timing, you need a piston stop and turn the motor over till it hits. Mark that and then turn it backward until it hits again. Mark that, and then the middle of the two is 0. Then go 12-14 degrees advanced from that and you'll be golden!
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Old April 12th, 2012, 11:10 PM   #3
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yeah i thought about the ignition module but im just not to sure. i unpluged it checked connections and everything looked ok. maybe ill try to replace it. on my car its actually located in the pass fender.
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Old April 12th, 2012, 11:15 PM   #4
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Originally Posted by Brandon950stang View Post
on my car its actually located in the pass fender.
WTF?
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Old April 12th, 2012, 11:24 PM   #5
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Id say its your timing bro,my car use to do the same thing.. Set your timing, you can go by what he said OR the EZ method get a digital timing gun and shoot it also..Id loosen that screw to the timing enough to turn it,then start the car and look towards your firewall theres a little connector or "jumper" pull that out so you can set your timing.. Then move the distributor a LITTLE bit i mean an 1/8th of an inch at a time and each time you move it tap or rev the throttle not all crazy just a small rev. Let it come back down and see if it adjusts and the car runs smoother. When you like how its running plug that connector back in,turn off the car and tighten the bolt to the distri. Then drive off give the computer a few mins of so to adjust it takes some time.. Also try resetting the IAC and set your idle i did both and mines is OK for the most part..
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Old April 12th, 2012, 11:27 PM   #6
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oops not the firewall its next to the MAF sensor lol
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Old April 13th, 2012, 09:42 AM   #7
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I set the timing but I still dont know if its right cuz I dont know if the adjustable timing pointer is set right. So im,going off a pointer that could be set wrong.


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