95 Mustang idle issue?

[True Blue]

IAC has been cleaned but didnt change anything

On a cold start, unplug the IAC's electrical connector and see if the idle improves or if the car stalls.

[95GT_VERT]

On a cold start, unplug the IAC's electrical connector and see if the idle improves or if the car stalls.

car stalls

[True Blue]

Did you try resetting the base idle? http://www.muscularmustangs.com/idlereset.php

The problem you are experiencing I'm facing the same exact issue with my coupe, started happening just before I put it away for the winter. I haven't had a chance to work on it yet, I'm hoping it's just a dirty IAC.

[Ponyryd]

Plugs, wires, cap and rotor are all under 10,000km....all vacuum lines were replaced during the build 2 season ago...MAF has been cleaned....IAC has been cleaned but didnt change anything

I did the KOER test and one code was for the ECT sensor....replaced it and it didnt fix the car..... i switched back to the original sensor....the new one was all plastic which was strange to me

I believe there are two sensors, one for the guage and one for the ECM, are you sure you changed the right one?

[ZR]

I just installed the updated coolant temp sensor + pigtail in a build today.

[95GT_VERT]

Yes , replaced the multi wire sensor in the coolant tube , not the single wire gauge sensor

[ZR]

[ZR]

OEM vs updated version + pigtail.

[Darkhorse]

After you sort this stuff out, the 94/95 all do very well with an SCT tune, they will run cooler and smarter. You'll notice a big difference.

[ZR]

Too bad the A9L swap harness n related bits fell off the map, works wonders on even a bone stock one. In the same breath, as Corey said, decent tune is money well spent as well.