Electric Radiator Fan Swap - 94 Grand Am

[Jeffy]

Specifies the 4.0L XJ only.  The 2.5L XJ does not have the aux fan.

[sharpxmen]

Specifies the 4.0L XJ only.  The 2.5L XJ does not have the aux fan.

the feature might still be there as there's no harm in it but it's a long shot - the PCMs are same design just the 2 missing cylinder drivers for the 2.5L

would be great if it turns out to be available on the 2.5L

can probably be tested with an additional PCM temp sensor and engine running and stick the temp sensor in boiling water - if pin 31 gives ground and when taken out of the boiling water there's no ground then it works (fingers crossed).

[aka-justin]

Fingers are crossed

It would be like the 15 gallon tanks in the 2.5L that you just have to cut insert in the hole to make 20 gallon. 

[sharpxmen]

Fingers are crossed

good find  keep us posted with this, i'm really interested. thanks in advance

[aka-justin]

I just looked for the Dark Blue / Pink wire (DB/PK) in my harness and it's not there.  Next weekend, I'll pull the connector, add a lead to #31, re-attach, and test.

I looked up the relay and connector for the XJ.  The fan control relay on the XJ is the horn relay on the YJ.







One good thing has come of all this so far.  I found two loose connectors on my harness by the map sensor.  I found out one is for a hood light (didn't know it was an option) and the other was a TCC relay which I guess is for locking the torque converter on a A/T, but I'm going to tap my fan relay on it's white/yellow switched iginition    Saves a few extra feet of wire.