Check Engine Light following Radiator Fan Motor replacement

[rigger45]

I had to change the radiator fan motor. After I finished and did the op check and leak check the check engine light came on and has stayed on. Would the reset be disconnecting the negative battery cable for a few minutes and reconnecting it? I have heard that sometimes this works. Otherwise it runs fine and stays very cool even with max A/C. I live in Kansas where it is hot and humid this time of year.
Also send to my email.
thanks
rigger45

[CREWZIN]

First of all, find out what fault code is coming up on the computer. On the top of this section is a sticky that tells you how to pull the codes. Then work from there.

[rigger45]

I got a 1490. It is in the fan control low speed circuit. I did the R&R of the low speed relay and still have a light.
Could it be the high speed relay or maybe the sensor at the fill port/thermostat housing?

[Hooligan]

Originally Posted by rigger45

I had to change the radiator fan motor. After I finished and did the op check and leak check the check engine light came on and has stayed on. Would the reset be disconnecting the negative battery cable for a few minutes and reconnecting it? I have heard that sometimes this works. Otherwise it runs fine and stays very cool even with max A/C. I live in Kansas where it is hot and humid this time of year.
Also send to my email.
thanks
rigger45

I answered this in your first post!!

[rigger45]

I realize that now. I was trying to work too many sources at one time.
The good new is that the local Chrysler outfit did assist also. He said that if the code is the same number as it was before the component replacement, the computer may take some time to pick up on it and do the reset.. Later that day, the check engine light went out while the missus was running some errands.
But I do apperciate your assistance.
Rigger45

[rigger45]

I had it fixed with the R&R of the fan motor until lately. No more fan and the Base Auto service computer said it was the relay, again. I have done relays and the motor and the temp sensor at the radiator fill point.
Would installing a separate fan controller work or would it be better to wire a switch via the battery to the fan motor?