Contour Enthusiasts Group Archives Forums Modifications Duratec Maintenance Engine guns on cold startup

Originally posted by ssolomo:

---

Very odd - got all the 60k stuff done a few weeks ago (and then some - DMD installed, new motorcraft spark plugs, flush coolant, and of course fresh Mobil 1 and motorcraft filter), and a week ago, I noticed that the car guns itself when it starts up - to 2200 or 2500 RPM, then holds for a second or two, then slowly drops down to 1500 RPM (where it normally would start to) for about 5-10 more seconds, then comes down to about 1000. Otherwise, it runs as good as new and idles fine the rest of the time (and on hot starts it is fine too).

Engine is stock except DMD and K&N drop in air filter. I've driven it all of its 61k miles. Mobil 1 for the past 45k.

Any ideas? I still have a few months under ESP left.

Thanks,

Steven
'98.5 SVT

---