deggial

make a long story short...(not really , I guess)

had surging at idle at first, then car wouldn`t idle at all, had to stay on the gas to keep car running

checked the usual culprits ( TPS, BAC, connections, etc.,).

finally disconnected the BAC, upped the idle so it wouldn`t stall.

Noticed when car was in gear, clutch disengaged, rpms would drop by 200-300rpm; also when revving the engine, as the rpms dropped , at around 1200 rpm the engine run incredibly rough unless I took it out of gear.

traced the problem to a bad clutch switch. Replaced switch and no problems anymore.


Comments??

deggial

should`ve specified `86 N/A

mazdaspeed7

Should have searched I posted this probably 6 months ago

deggial

I hardly come here any more, every time I do a search I came up with the stuff I already know about. Oh well

Wankel7

Bad clutch swith? How does that interrelate to idle?

James

RETed

Sure, been there, done that...

Remove the clutch switch totally, and the idle never drops below 1100RPM or so.&nbsp This happens when the piece-of-**** plastic stopper on the clutch pedal breaks and allows the switch to slip into the now vacant hole.&nbsp This is obvious when you hear a loud click under the dash everytime to lift off the clutch pedal.&nbsp Although not identical to your problem, it's pretty similar.

Sorry, dunno why this is so, but I guess the ECU keeps track of the clutch switch and somehow bumps up idle for some screwed up reason...


-Ted

RexRyder

iTrader: (10)

ur talking about the button that has to be depressed for the car to start? my frend had a 87 sport, taped the button down so he cud jus start it up with out pressing the clutch. seem to idle and drive ok.

Wankel7

Well uh. My 86 will let me start the car with the clutch out all day. Maybe I should fix that switch.

James

von

Hey. My clutch pedal makes a tic sound everytime I depress it. Whats up with this? Can this cause a slipping clutch?