ok i got a 92 TR 4cyl auto and it was idling low so i turned the idle screw up and it was fine but once its put into D the revs drop from 900rpm to 500rpm and feels like its gunna stall and then once the air con gets put on it shakes and virbrates all over the place.

duz any1 know why it would do this i have a reconed engine in there and im sure the timing and all that is ok it did it with the old engine in there aswell.

Maybe adjust your ISC and try cleaning the TPS up. See how that goes for a start. Could be a number of things.

put it into park and put on the ac. if the revs drop instead of rise its the isc. the idle speed controller.

ok yer that is what it duz it drops revs insted of rising them i always thought they should rise when AC is turned on.

how do i go about fixing this or replacing it??

what is the part number for the ISC i got

Genuine Part Number MD628053

off ebay but that is for the V6cyl engine is it the same for the 4cylinder.
i need 1 for a TR 4cyl 2.6efi

there 250 installed from mitsu.

i think i found them on ebay for $90 how hard are they to install dont look that hard.

i think i found them on ebay for $90 how hard are they to install dont look that hard.

Easy to install, but need to be set with a multimeter.

http://cgi.ebay.com.au/Brand-New-Magna-Idle-Speed_W0QQitemZ230017191294QQihZ013QQcategoryZ1040 0QQrdZ1QQssPageNameZWD1VQQcmdZViewItem
That the one you're talking about Hybrid? Provide a link for the rest of us who own 4pot magnas with shot idle speed controllers lol

the isc does not need to be set. the tps needs a multimeter to be set.

the isc does not need to be set. the tps needs a multimeter to be set.

O thats right.. my bad! :D

so if i dont have problem with the TPS its just a pull out and replace job with the ISC???

THEY SAY THERE GENUINE aswell.

TR and TS 4 cylinder

http://cgi.ebay.com.au/MITSUBISHI-TR-TS-HYUNDAI-4-CYL-IDLE-SPEED-MOTOR_W0QQitemZ110066673369QQihZ001QQcategoryZ1040 0QQtcZphotoQQcmdZViewItem

TR and TS 6 cylinders

http://cgi.ebay.com.au/MITSUBISHI-TR-TS-HYUNDAI-4-CYL-IDLE-SPEED-MOTOR_W0QQitemZ110066673369QQihZ001QQcategoryZ1040 0QQtcZphotoQQcmdZViewItem

TE 6 cylinders

http://cgi.ebay.com.au/MITSUBISHI-MAGNA-TE-6-CYL-IDLE-SPEED-MOTOR_W0QQitemZ110065123283QQihZ001QQcategoryZ1040 0QQtcZphotoQQcmdZViewItem

go to mitsu. they can check the computer for error codes and they adjusted the sensors and such for me for 50 dollars. they then could tell me what was wrong when other mechanics were stumped.

yer but im guessing that is the problem