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Old 09-22-2010, 09:48 AM
 
Location: colorado
2,788 posts, read 4,255,133 times
Reputation: 3312

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I have an 88 jeep cherokee laredo automatic 6 cyl
I was told the flex plate was cracked
I recently replaced the radiator but its been overheating again
My dear sweet boyfriend who dont know much about cars or jeeps
replaced the radiator.
Do I have to replace the thermostat?
What would be the average price to put in a new flexplate, I believe you have to remove the tranny to get to the flex plate.
I know its an older jeep, but its a tough little fooker..lol

Any ideas will be helpful
Thanks
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Old 09-22-2010, 10:13 AM
 
101 posts, read 402,344 times
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You're ok without a new t-stat, but it's pretty cheap insurance anyway. Just be sure you put it in facing the right direction (there's an arrow on it indicating water flow).

The flexplate itself is pretty cheap, but putting it in isn't. It's a lot of work to get to, including dropping the trans. This is a regular cherokee, not a grand, correct? For the regular cherokee, join NAXJA.org, they're a great group with incredible amounts of information about those jeeps.

On edit: you should find many jeepers in that group in Colorado, depending on where you are maybe you'll even get one or two that would help you put in the flexplate.
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Old 09-22-2010, 10:30 AM
 
Location: Reality
9,958 posts, read 7,356,656 times
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Old bird is dead on correct, a new T stat is cheap and should be done whether you think you need it or not since you'll be dumping all your coolant anyway. The flex plate isn't a quick do it yourself kind of job for someone who isn't good with mechanical work, without a tranny support jack and other specialty tools it's a lot harder.
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Old 09-22-2010, 10:56 AM
 
19,122 posts, read 21,473,303 times
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I read it as she has a new rad and the rig is still over heating...

I would say then the old T stat is dead, or dying. To install a new one isn't very hard.

The flex plate won't be any fun, but a good shade tree with lots of tools and some jacks can get it done, but not for cheap.
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Old 09-22-2010, 12:51 PM
 
Location: Eastern Washington
13,451 posts, read 42,945,431 times
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Something that happens on these 6-cylinder automatic Jeeps is the bolts connecting the torque converter to the flex plate will work loose. This will cause a knock that sounds sort of like piston slap, it sounds like serious engine problems but actually you only have to tighten the bolts, usually.

Are you certain your flex plate is actually cracked?

It might make sense to change the rear main seal on the engine if you have to replace the flex plate, I would put a set of new hardened (Grade 8 or better) bolts in too.
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Old 09-22-2010, 01:37 PM
 
Location: colorado
2,788 posts, read 4,255,133 times
Reputation: 3312
Quote:
Originally Posted by M3 Mitch View Post
Something that happens on these 6-cylinder automatic Jeeps is the bolts connecting the torque converter to the flex plate will work loose. This will cause a knock that sounds sort of like piston slap, it sounds like serious engine problems but actually you only have to tighten the bolts, usually.

Are you certain your flex plate is actually cracked?

It might make sense to change the rear main seal on the engine if you have to replace the flex plate, I would put a set of new hardened (Grade 8 or better) bolts in too.

Well not sure if its cracked. I did call a mechanic and he told me too check the bolts on the flexplate, So Im going to do that afterwork.
I also have an 96 cherokee sport but my plates on that one expired,
Im hoping its just loose bolts.
I recently had my front drive shaft replaced.
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