Electric Fan Sensor Problem

[Warren99]

This is a continuation from the r12 to r134a thread.

 

For those who don't know, 14 is the plug for your electric fan. You may be in the same situation as me if you or a PO swapped your oem driver side radiator hose for a later model hose, leaving nowhere for the electric fan sensor to go.

Does anyone know if/where you can just buy the parts new(talking about 19, 10, 20, 15, and 18)? I'd rather just do that so I have new hoses but if not I might already know of an XJ that has them.

[eaglescout526]

Well I can provide some part numbers later. In the mean time you could always snag the hose from an XJ you know that has it. 

[Warren99]

any 88 XJ should have it right?

[eaglescout526]

17 minutes ago, Warren99 said:

any 88 XJ should have it right?

As long as it has the electrical

fan with AC, yes. 87-90 is the year range for that set up

[Warren99]

 

16 minutes ago, eaglescout526 said:

As long as it has the electrical

fan with AC, yes. 87-90 is the year range for that set up

alright

[cruiser54]

IIRC, that setup was used on vehicles with dealer installed air conditioning. 

[Htchevyii]

Not sure what you've got going on, but the stock radiator should have a spot for the fan sensor in the tank. Sometimes there is a problem when people swap to the later radiators to eliminate the pressure tank because some do not have the fan sensor provision. I used Performance Radiator and it accepted the factory 1988  sensor and eliminated the pressure tank.

 

https://shop.performanceradiator.com/index.php?route=product/product&product_id=7809

[Warren99]

Yea I feel like an idiot. Both the 88 and 89 XJ at the junkyard had the sensor screw right into the radiator, rather than the hose setup like in the diagram. It wasn’t til then that I remembered I had an OEM 87 MJ radiator at home, so I’ll be using that

[eaglescout526]

38 minutes ago, Warren99 said:

than the hose setup like in the diagram.

Sorry….parts diagram only shows so much. AMC probably left it out of the diagrams due to the fact that it could be found easily with the part number stamping and would be a simple part order vs a dealer install kit that would need the diagram. 

[Warren99]

Just realized I never updated this. Got the new oem style radiator in and the fan works when they a/c is on. Didn’t kick on when the engine started to over heat, which happened bc there was lots of air in the system that I forgot to purge. Either way, now that all the coolant is in, it will idle just a hair over 210, and it stays there whether a/c is on or off

[cruiser54]

nice.