I have a 1996 XJ 4.0 AW4. It has a one year old Modine 2 row radiator, new fan clutch, 8 month old thermostat, factory hoses, new temp sensors, etc. Coolant is new. There is a B&M transmission cooler mounted on the radiator in front of the mechancial fan.
My XJ will overheat on hot days (75*+). This occurs when idling, crawling, or on the highway. Basically any time you make the engine work. But when the temps drop and it gets cold the motor will run too cold. Often at 150* or 160*, but will warm up to temp when idling. I have replaced the thermostat with a factory 195 three times in the past year.
So here's what I plan to do.
I'm going to remove the current Modine radiator and transmission cooler. I'm going to replace the radiator with a CSF from Dirk, and run the power steering through the trans cooler built into this radiator. Will this work OK and would anything negative come from this mod? After this I would no longer have anything mounted directly in front of the radiator, which would allow for maximum air flow.
Now for cooling the transmission I am thinking about cutting a hole on the driver's side of the hood and mounting this B&M trans cooler:
http://bmracing.com/index.php?id=products&sid=4&cat=20&subcat=28&pid=75
It's 13.5" x 9.5" with a fan mounted on it which can pull 500 cfm of air.
This cooler has a thermostat which activates the fan once the trans reaches 175*. Would this cooler be OK to run independantly and be enough keep my transmission nice and cool on the trail? I would also run a temp gauge and manual switch to activate the fan.
The fan on the cooler can be set up to be a pusher or a puller. Which should it be? Should the fan be mounted on top of the hood or flipped over so the fan would be in the engine bay? Also what can I do to keep water, snow, and other debris out of this area?
I'm then going to replace the thermostat yet again, but this time I may go with a Robert Shaw 195 t stat.
And finally, would it be a good idea to mount a hood vent on the passenger rear side of the hood?
Oh, one last thing. Should I makeshift a splash guard under my engine bay to direct airflow or help create a vacuum?
Thanks for the input, let me know if you think of the trans cooler and if this will work.
My XJ will overheat on hot days (75*+). This occurs when idling, crawling, or on the highway. Basically any time you make the engine work. But when the temps drop and it gets cold the motor will run too cold. Often at 150* or 160*, but will warm up to temp when idling. I have replaced the thermostat with a factory 195 three times in the past year.
So here's what I plan to do.
I'm going to remove the current Modine radiator and transmission cooler. I'm going to replace the radiator with a CSF from Dirk, and run the power steering through the trans cooler built into this radiator. Will this work OK and would anything negative come from this mod? After this I would no longer have anything mounted directly in front of the radiator, which would allow for maximum air flow.
Now for cooling the transmission I am thinking about cutting a hole on the driver's side of the hood and mounting this B&M trans cooler:
http://bmracing.com/index.php?id=products&sid=4&cat=20&subcat=28&pid=75
It's 13.5" x 9.5" with a fan mounted on it which can pull 500 cfm of air.
This cooler has a thermostat which activates the fan once the trans reaches 175*. Would this cooler be OK to run independantly and be enough keep my transmission nice and cool on the trail? I would also run a temp gauge and manual switch to activate the fan.
The fan on the cooler can be set up to be a pusher or a puller. Which should it be? Should the fan be mounted on top of the hood or flipped over so the fan would be in the engine bay? Also what can I do to keep water, snow, and other debris out of this area?
I'm then going to replace the thermostat yet again, but this time I may go with a Robert Shaw 195 t stat.
And finally, would it be a good idea to mount a hood vent on the passenger rear side of the hood?
Oh, one last thing. Should I makeshift a splash guard under my engine bay to direct airflow or help create a vacuum?
Thanks for the input, let me know if you think of the trans cooler and if this will work.
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