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Old 12/07/2010, 02:39 PM   #1
mike03
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Default Problem with the geo..

ok 1st off, do not comment if all you gotta do is talk sh*t..

I have a 94 Geo prizm 1.6L with an automatic 3speed transmission..
  • The transmission seems like its slipping when its only down shifting. It upshifts normally, with out any problem. The fluid is going low, but its because the pan is leaking. I put in a quarter and a half to specification but it still slips when downshifting. Clueless!
  • The coolant temperature gauge goes cold when its freezing outside and running in the wide open. I looked at the coolant and its slowly going down in the resevoir. I Flushed the coolant a month ago, but when i checked it, its getting darker and nasty looking. Couldn't figure if it could be the ECT sensor or maybe the gauge it self.

I wasn't 100% sure if maybe the head gasket must be replace and could cause my coolant going low.

Please, if anyone could help, i would really appreciate it..

Thank You!


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Old 12/07/2010, 04:09 PM   #2
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Default Re: Problem with the geo..

Sounds like you have a bad head gasket and a transmission that is shot..


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Old 12/08/2010, 02:46 PM   #3
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Default Re: Problem with the geo..

I was thinking about that.. because the coolant is going low and when i checked the resevoir it looks like oil in the system.. The coolant feels like oily when i feel it..

About the transmission, couldn't the governor be the problem for my downshift?


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Old 12/08/2010, 11:04 PM   #4
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Default Re: Problem with the geo..

def a head gasket. its fairly cheap to buy if you can do it yourself. if you have to take it in its a little more pricy. just make sure to remember how you took it apart when you get it back together and try to mark your timing the best you can.


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Old 12/09/2010, 02:44 PM   #5
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Default Re: Problem with the geo..

Thanks bro.. i believe so too.. but im not gonna take it to no where.. the only thing i havent done is set up the timing.. which i hope its pretty easy to do.

If i do have coolant in my combustion chamber, how could i flush my whole system without putting more damage to my internals? the prizm doesnt really have any procedure, as far as i know, way to flush the coolant system.


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Old 12/10/2010, 03:32 PM   #6
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Default Re: Problem with the geo..

If you have a blown headgasket, flushing it isn't going to solve your problem.

Change the gasket, change the oil, and flush the coolant system. It's pretty simple.


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Old 12/15/2010, 08:40 AM   #7
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Default Re: Problem with the geo..

after you do the head gasket. fill with oil (after flushing the coolant system) run for a few minutes and then change the oil again. then I would change the oil again after 500 miles. this will help ensure that you get any coolant out of the oil system.

plus, if you've got oil in the coolant i bet you got coolant in the oil.....check your oil level and look for two things.....is it overfull? and does it look creamy or like chocolate milk?


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Old 12/15/2010, 04:06 PM   #8
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Default Re: Problem with the geo..

Quote:
Originally Posted by deadmoans View Post
after you do the head gasket. fill with oil (after flushing the coolant system) run for a few minutes and then change the oil again. then I would change the oil again after 500 miles. this will help ensure that you get any coolant out of the oil system.

plus, if you've got oil in the coolant i bet you got coolant in the oil.....check your oil level and look for two things.....is it overfull? and does it look creamy or like chocolate milk?
X2..........if the oil looks like chocolate milk I would suggest getting some cookies and a glass cup as well!!! LOL

What kelly suggested is a tried and proven procedure.........specially if your block has no visible drain plug for the coolant.

Last edited by importsusa; 12/15/2010 at 09:24 PM.

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Old 12/16/2010, 12:52 PM   #9
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Default Re: Problem with the geo..

Quote:
Originally Posted by dsmer06 View Post
If you have a blown headgasket, flushing it isn't going to solve your problem.

Change the gasket, change the oil, and flush the coolant system. It's pretty simple.
Ummm.. thanks?!?

Quote:
Originally Posted by deadmoans View Post
after you do the head gasket. fill with oil (after flushing the coolant system) run for a few minutes and then change the oil again. then I would change the oil again after 500 miles. this will help ensure that you get any coolant out of the oil system.

plus, if you've got oil in the coolant i bet you got coolant in the oil.....check your oil level and look for two things.....is it overfull? and does it look creamy or like chocolate milk?
Oil is not overfull.. I will double check to make sure that the oil does not have that nasty oily/creamy look to it..

Quote:
Originally Posted by importsusa View Post
X2..........if the oil looks like chocolate milk I would suggest getting some cookies and a glass cup as well!!! LOL

What kelly suggested is a tried and proven procedure.........specially if your block has no visible drain plug for the coolant.
LOL nice..
Vehicle does have a drain plug in the radiator, but no coolant bleed screw. Coolant is my least worry in how to replace.

Right now, the headgasket could be my issue to solve.. My only question is, How can a headgasket go damage like my situation? Any problems that could cause it to go bad?


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Old 12/20/2010, 08:48 AM   #10
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Default Re: Problem with the geo..

remember, just because there's no coolant in the oil still does not rule out the headgasket.

If you do have oil in the coolant, then most likely it's head gasket. Head gaskets can leak in multiple ways.


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Old 12/20/2010, 08:56 AM   #11
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Default Re: Problem with the geo..

Ok, re-read your original post. That coolant is going somewhere, either on the ground or into the cylinders. It could also be pushing it out the overflow tank. you need to ensure that the coolant is circulating. We had a car that was loosing coolant, did a pressure test and there were no leaks but it was still loosing coolant......the hose from the radiator cap to the overflow tank was clogged and under pressure it leaked out around the overflow hose at the radiator clamp.....a little compressed air and presto fixed.

Do a coolant pressure test and look for any leaks. You could have a bad thermostat. Check the heater hoses are both hoses hot going into the heater core and coming out? If one is hot and one cold you got a plugged heater core.....hook a garden hose to one of the lines with BOTH lines disconnected and see what shit comes out. Then do the same thing on the other hose so that you flush it both ways.


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Old 12/21/2010, 01:30 PM   #12
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Default Re: Problem with the geo..

Quote:
Originally Posted by deadmoans View Post
Ok, re-read your original post. That coolant is going somewhere, either on the ground or into the cylinders. It could also be pushing it out the overflow tank. you need to ensure that the coolant is circulating. We had a car that was loosing coolant, did a pressure test and there were no leaks but it was still loosing coolant......the hose from the radiator cap to the overflow tank was clogged and under pressure it leaked out around the overflow hose at the radiator clamp.....a little compressed air and presto fixed.

Do a coolant pressure test and look for any leaks. You could have a bad thermostat. Check the heater hoses are both hoses hot going into the heater core and coming out? If one is hot and one cold you got a plugged heater core.....hook a garden hose to one of the lines with BOTH lines disconnected and see what shit comes out. Then do the same thing on the other hose so that you flush it both ways.

Thanks man, i appreciate it

There is no leakage in the ground what so ever. Coolant resevoir is getting dark and nasty. I recently replaced the coolant and flushed out the system, completly! Cleaned out the resevoir and felt that the car is running perfectly.
A few miles later, checked my resevoir and what it looks, looks like oil has been going in my coolant system and its going low. It got me thinking that the head gasket could be my only cause.

Also, the temperature gauge goes low (cold side) every time its in the wide open roads driving when its around 20 degrees or below. But if its in park at idle, it goes to perfect engine temperature.

Strange problem, and possibly i could have a few solution in what it may be.
-gauge
or
-ect sensor

Any suggestion?


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Old 12/23/2010, 03:52 PM   #13
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Default Re: Problem with the geo..

Quote:
Originally Posted by mike03 View Post
Thanks man, i appreciate it

There is no leakage in the ground what so ever. Coolant resevoir is getting dark and nasty. I recently replaced the coolant and flushed out the system, completly! Cleaned out the resevoir and felt that the car is running perfectly.
A few miles later, checked my resevoir and what it looks, looks like oil has been going in my coolant system and its going low. It got me thinking that the head gasket could be my only cause.

Also, the temperature gauge goes low (cold side) every time its in the wide open roads driving when its around 20 degrees or below. But if its in park at idle, it goes to perfect engine temperature.

Strange problem, and possibly i could have a few solution in what it may be.
-gauge
or
-ect sensor

Any suggestion?
Head gasket.


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