Surging Idle 1986 Mercury Capri Rs

[Kapri]

Damsel in distress here. I have no history on the car prior to my purchase of it 8/2014.

I just installed a new speed density cold air kit, TFI module, ignition coil, and 100 amp alternator on my Capri. Now, she surges....at idle, in gear, all the time. I can't leave the driveway. Your thoughts & advice will be greatly appreciated.

 

[Kapri]

Let me clarify,.....it's a speed density car, not mass air. (I know a cold air kit is just a cold air kit. I don't want you to think I'm a complete dolt.)

 

[jrichker]

You guys with idle/stall problems could save a lot of time chasing your tails if you would go through the Surging Idle Checklist. Over 50 different people contributed information to it. The first two posts have all the fixes, and steps through the how to find and fix your idle problems without spending a lot of time and money. It includes how to dump the computer codes quickly and simply as one of the first steps. I continue to update it as more people post fixes or ask questions. You can post questions to that sticky and have your name and idle problem recognized. The guys with original problems and fixes get their posts added to the main fix.

It's free, I don't get anything for the use of it except knowing I helped a fellow Mustang enthusiast with his car. At last check, it had more than 159,000 hits, which indicates it does help fix idle problems quickly and inexpensively.