Ive read all the threads about advancing your timing and my car runs like a raped aped when it is but i just recently put on a bbk cai and set my timing to 14* advanced, driving theres not really much i can tell wrong driving but at a stop sign my idle is pretty rough it bounces between 500-900 and almost wants to stall but doesnt can someone tell me why when i set it back to the stock 10* it idles fine at a stop and runs smooth but doesnt get up and go like when its advanced thanks guys...
Timing advance sputter? HELP!
- Thread starter rage187u
- Start date
A couple of things to ponder. First confirm there are no vacuum or exhaust leaks. Second, has an aftermarket chip been installed. You will have to inspect the ECU to see if a previous owner has done something there. Third, what mods are on the car that you know of. Fourth, 14* may just be too much. Try 12 and see if anything improves after you have checked the first 2 items. And last, the IAC control valve may just through age is no longer responding to the signal from the ECU as it should.
Mrstangerbanger
Well-Known Member
Did you pull the spout connector before you did the timing??
There's not much you can clean on the IAC. The chamber and the protective bellows and that's it. Clean it if you will but if the problem is a worn shaft or a lazy solenoid the IAC will need to be replaced. From your description I don't see the IAC as being a prime candidate as the source of the problem.
yes i pulled the sput and set timing to 14 it runs fast and my engine doesnt ping but i have a rough idle at stoplights when i set it back to the stock 10 itr idles fine but isnt as fast i can feel the power loss and i came across this thread on google toyman thats why i was gonna try to clean it up before replacing it http://www.muscularmustangs.com/iac.php
This problem just started after you installed the BBK CAI and set the timing to 14*, is that correct? Did you adjust the throttle set screw? Did you adjust the air bleed screw to the IAC? If these have been altered you should do a idle reset. That's described on the site about cleaning the IAC. Have you rechecked the MAF sensor connection and confirmed that it's connected properly? If everything looks good do a wiggle test (wiggle the wires at the connection) to see if that changes the idle. It's a test for a loose or broken wire.
