anyone replaced a thermostat on a 91?
Question:
At the shop, we remove the idler for the drive belt to gain better access to the thermostat. Do the job with the engine cold, and do not buy a cheap thermostat. Auto Zone parts are cheap for a reason. Our shop could save thousands of dollars a year if we bought from Auto Zone instead of Carquest. But we don’t want to keep doing the job over for free. Get yourself a 10mm 1/4" drive swivel socket and an extension about 4" long. When you are going back together, get a small piece of paper a little larger than the head of the bolt and lay it over the top of the bolt and put the socket down over the bolt and paper assembly. The paper will act like a wedge and keep the bolt from falling out of the socket. Grease works also, but I like the paper cause it’s cleaner and easy to do. Make sure all the gasket surfaces are free from corrosion and just reassemble in reverse order. Tom Guelker
ASE CMAT/L1
Response:
At the shop, we remove the idler for the drive belt to gain better access to the thermostat. Do the job with the engine cold, and do not buy a cheap thermostat. Auto Zone parts are cheap for a reason. With all due respect Ford’s Explorer thermostats seem to have about a 100% failure rate, judging from this newsgroup 
)
Response:
I need to replace the thermostat on my 91 explorer. Anyone got any tips? easy job? price? thanks in advance chris
Response:
I bought the thermostat from Auto Zone. They were out of the gasket so I had to pay Ford $4 for it. I bought the stock temperture rating and the now I have to turn down the heater when it’s freezing outside ) I did not think it was a very easy job. There are 3 screws holding the housing on, and the one on the left is hard to get to. In retrospect it may have been easier to disconnect all the surrounding components to get to it. The most difficult part was getting that left screw started when re-assembling. After several tries I put the screw in a vise and cut a slot in it with a hack saw so I could use a slotted screwdriver to get it started. This made getting the screw started fairly easy. I also replaced the thermostat in my 92 and did not have nearly as much trouble. Looking at them, they look the same. – Hide quoted text — Show quoted text – >I need to replace the thermostat on my 91 explorer. Anyone got any tips? >easy job? price? thanks in advance >chris
Response:
Someone had a real horror story a couple of months ago when they replaced a thermostat. He dropped one the three bolts and couldn’t find it, so he just got another one. The dropped bolt got wedged between the crankshaft pulley and the engine, and caused the crankshaft or one of the accessories (I don’t remember the details) to seize. By the time it broke loose it had caused several hundred dollars of damage. Bruce Carlson – Hide quoted text — Show quoted text – > I bought the thermostat from Auto Zone. They were out of the gasket so I > had to pay Ford $4 for it. I bought the stock temperture rating and the now > I have to turn down the heater when it’s freezing outside ) > I did not think it was a very easy job. There are 3 screws holding the > housing on, and the one on the left is hard to get to. In retrospect it may > have been easier to disconnect all the surrounding components to get to it. > The most difficult part was getting that left screw started when > re-assembling. After several tries I put the screw in a vise and cut a slot > in it with a hack saw so I could use a slotted screwdriver to get it > started. This made getting the screw started fairly easy. > I also replaced the thermostat in my 92 and did not have nearly as much > trouble. Looking at them, they look the same. >I need to replace the thermostat on my 91 explorer. Anyone got any tips? >easy job? price? thanks in advance >chris
Response:
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