Infamous intermitant miss at idle

[raywoo]

My SVO has a regular miss at idle...almost like dropping a heartbeat every 10 seconds or so. I was told by the local turboford guys that this is an infamous problem.

All the ignition components have been replaced with new OEM parts - plugs, wires, coil, oxygen sensor, fuel filter, and 190 lph pump. The original fuel pressure regulator has been replaced with a Kirban unit at stock pressure. Base timing is at 10 degrees. I have a rebuilt motorcraft distributor and new TFI module ready to install this weekend.

Suggestions?

Thanks

[svobud]

Check your TPS lately or cleaned the IAC?

[raywoo]

Yep - cleaned the IAC, and adjusted the TPS

[Eyelawdoc]

Pull codes. If there are no codes, check for rotten wiring to the TFI module plug.

[Pat_in_L.A.]

My 84 SVO did the same thing. The Smog Police said it had a misfire and wouldn't pass it. After installing a new O2 sensor, the idle dips 2 or 3 times per second but it passes smog and things are great.