mcgarret

I bought this 85 GSL-SE 3 months ago and finally she is on the road. I have looked throught he archives but not sure if anything matches this, so here goes.

I pulled the tranny and stuck in a used 5 speed from 82 or 83. While out I replaced a leaky coolant hose at the back side under the throttle chamber(goes to wax pellet?) and cleaned a very dirty throttle plate. Now at cold start, I no longer have the 1700 rpm fast idle, it hunts from 500-1000 rpm and acts like it is gonna die. Slowly the hunting eases and goes into a steady 850rpm idle. Car goes like a rocket.

I can't find any accidentally incurred vacuum leaks (wouldn't a vacuum leak still have a rough idle when hot?). Did I somehow bugger up the wax pellet? Am anxious to fix this and get happily motoring. Tia

85RX7GS

iTrader: (1)

It's tuned to idle around 750rpm

Manntis

Actually an '85 SE is 800-850 RPM idle, according to the Mazda factory repair manual.

I had the same hunting when I had an oil change and the 'helpful' tech reset my idle far too high to 'compensate' for the thicker oil. All I had to do was give the AAS screw on top of the Dynamic Effect Chamber inlet (the only screw on top, in it's own li'l cylinder) a half twist and everything was fine again.

Stripgear

iTrader: (2)

If a little information is dangerous then... Well just read this. By the way, were you ever a police officer in Hawaii?http://members.ij.net/mrmazda/gslseidle.html

mcgarret

Well, I tried setting the fast idle cam on the roller as marked according to Haynes. It started and idled at 1500, looking good, then went into 3-4 minutes of hunting and then its steady 850 rpm idle.

Aargh, what the hell have I done!!!!! Can I remove the wax pellet from the housing and "clean" it?