OBS major issues

alejo · 06-15-2010, 01:05 AM

ok, here´s the deal. I changed my head gasket due to overheating. The same day I took it out of the shop I noticed the auto gearbox was working funny. (i know, not this forum, please keep on reading) It changed gears abruptly and coudn´t stay steady on a gear. Plus, when I accelerated the car from 0 with my wheels turned, it moved very slowly. Just as if I had the emergency brake up. Now with the engine. It was still overheating. I didn´t let it overheat, but I did notice the needle going up with some speed. It had a leak on the radiator, fixed. But still overheating!! I was driving normally, checked the needle, a little over half (not normal, but I was half a block from home) less than 5 secs later, the car stoppped. The temp needle was all the way to the top, and the fuel gauge in its lowest position plus fuel light on. It has fuel, just put some gas 5 mins before. the engine is not sos hot, but not overheated. Even with the car off, the needle was still up and my fuel pump was working! Took the battery terminal off but a soon as I put it back on, the needle went up and couldn´t start the car, even after 30 mins of cooling down. I now its a HUGE case, but what could possibly be wrong?? thanx

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XanRules · 06-15-2010, 01:22 AM

blown headgasket at best.
Blown motor at worst.
Also why did you post the same paragraph twice?

alejo · 06-15-2010, 11:33 AM

sorry about the paragraph, my computer failed

. I filled the radiator with water all the way to the top an tried to turn the car on, it didn´t throw the water upward like it does when you have a blown head gasket. Is that a viable "test"?

XanRules · 06-15-2010, 02:04 PM

nope.
Not at all.

Check the color of the coolant and the color of your oil.

LEKO · 06-15-2010, 03:03 PM

If your prestone overflow is clean you may see "oily/dark" deposit in it. It's a sign that the oil/coolant mixes together (head gaskets gone...).

Also, if you see air bubble in the overflow (pressure in the pistons pushes air in the cooling system), head gasket gone...

Is there more smoke coming out from your exhaust... coolant goes in the pistons...

A defective radiator cap can also makes your engine behaves like the head gasket is gone!

Hope it will helps you.

xsv141 · 06-15-2010, 03:21 PM

i was having the same problem in my 07 obs and at first it was a defective radiator cap then it was doing it again so took it back to the dealer and it was in deed a blown head gasket!!!!

Tessai · 06-15-2010, 04:24 PM

When you refilled it with coolant after changing the headgasket and later the radiator, did you get all the air out of the system?

You need to fill it with coolant, let the car get to normal operating temp (thermostat open) and shut the car off. Let it cool down, then take the radiator cap off again. The coolant level will be a little lower as your block now contains some of the coolant. Top it off again.

If you got air in the system it could overheat still.

No idea on the rest of your issues, sorry.

vrusso · 06-15-2010, 07:52 PM

Quote:

Originally Posted by Tessai

When you refilled it with coolant after changing the headgasket and later the radiator, did you get all the air out of the system?

You need to fill it with coolant, let the car get to normal operating temp (thermostat open) and shut the car off. Let it cool down, then take the radiator cap off again. The coolant level will be a little lower as your block now contains some of the coolant. Top it off again.

If you got air in the system it could overheat still.

No idea on the rest of your issues, sorry.

I would second this. If all went well with your orginal HG replacement it sounds like you need to burp the system and get the air out of it. If there is air in the system the Thermastat wont open and allow the coolant to flow and cool the engine.

Jessekrs123 · 06-15-2010, 10:12 PM

A similar thing happened to me with my legacy. The engine would not be hot, but the temp gauge would jump and stall my car and it would not start for a day. I know for sure the engine was not hot because the valve covers were just warm. I'd go back the next day and it would run fine. It turned out to be a bad ground for me, after I fixed the ground I have never had the problem since. If it is a ground it could also be messing with your auto tranny, I did not have this problem because I have a 5 speed. Hope this helps, it was a big pain in the arse to find the ground, 3 weeks it took!

alejo · 06-16-2010, 10:30 AM

Hi, thanx for all your input! It was a bad ground with a sensor. Can´t remember which one it was. problem solved. The next issue is clenaing the radiator and changing the cap. Thanx, again.

06-15-2010, 01:05 AM	#1
alejo Scooby Newbie Member#: 170081 Join Date: Jan 2008 Location: Tegucigalpa Vehicle: 2004 2.5RS blue	OBS major issues ok, here´s the deal. I changed my head gasket due to overheating. The same day I took it out of the shop I noticed the auto gearbox was working funny. (i know, not this forum, please keep on reading) It changed gears abruptly and coudn´t stay steady on a gear. Plus, when I accelerated the car from 0 with my wheels turned, it moved very slowly. Just as if I had the emergency brake up. Now with the engine. It was still overheating. I didn´t let it overheat, but I did notice the needle going up with some speed. It had a leak on the radiator, fixed. But still overheating!! I was driving normally, checked the needle, a little over half (not normal, but I was half a block from home) less than 5 secs later, the car stoppped. The temp needle was all the way to the top, and the fuel gauge in its lowest position plus fuel light on. It has fuel, just put some gas 5 mins before. the engine is not sos hot, but not overheated. Even with the car off, the needle was still up and my fuel pump was working! Took the battery terminal off but a soon as I put it back on, the needle went up and couldn´t start the car, even after 30 mins of cooling down. I now its a HUGE case, but what could possibly be wrong?? thanx * Registered users of the site do not see these ads. Last edited by alejo; 06-15-2010 at 11:34 AM.

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06-15-2010, 01:22 AM	#2
XanRules Scooby Guru Member#: 157348 Join Date: Aug 2007 Chapter/Region: South East Location: ¯\_(ツ)_/¯ Vehicle: It's rowdy outside I ain't signin' s***	blown headgasket at best. Blown motor at worst. Also why did you post the same paragraph twice?

06-15-2010, 11:33 AM	#3
alejo Scooby Newbie Member#: 170081 Join Date: Jan 2008 Location: Tegucigalpa Vehicle: 2004 2.5RS blue	sorry about the paragraph, my computer failed . I filled the radiator with water all the way to the top an tried to turn the car on, it didn´t throw the water upward like it does when you have a blown head gasket. Is that a viable "test"?

06-15-2010, 02:04 PM	#4
XanRules Scooby Guru Member#: 157348 Join Date: Aug 2007 Chapter/Region: South East Location: ¯\_(ツ)_/¯ Vehicle: It's rowdy outside I ain't signin' s***	nope. Not at all. Check the color of the coolant and the color of your oil.

06-15-2010, 03:03 PM	#5
LEKO Scooby Newbie Member#: 238293 Join Date: Feb 2010 Chapter/Region: E. Canada Location: Montreal, Canada Vehicle: 2002 Impreza 2.5TS Midnight Blue Pearl (MBP)	If your prestone overflow is clean you may see "oily/dark" deposit in it. It's a sign that the oil/coolant mixes together (head gaskets gone...). Also, if you see air bubble in the overflow (pressure in the pistons pushes air in the cooling system), head gasket gone... Is there more smoke coming out from your exhaust... coolant goes in the pistons... A defective radiator cap can also makes your engine behaves like the head gasket is gone! Hope it will helps you.

06-15-2010, 03:21 PM	#6
xsv141 Scooby Newbie Member#: 231904 Join Date: Dec 2009 Chapter/Region: RMIC Location: Denver, CO Vehicle: 2007 WRX UGM	i was having the same problem in my 07 obs and at first it was a defective radiator cap then it was doing it again so took it back to the dealer and it was in deed a blown head gasket!!!!

06-15-2010, 04:24 PM	#7
Tessai Scooby Newbie Member#: 214184 Join Date: Jun 2009 Location: Dallas, TX Vehicle: 1999 Legacy Outback White	When you refilled it with coolant after changing the headgasket and later the radiator, did you get all the air out of the system? You need to fill it with coolant, let the car get to normal operating temp (thermostat open) and shut the car off. Let it cool down, then take the radiator cap off again. The coolant level will be a little lower as your block now contains some of the coolant. Top it off again. If you got air in the system it could overheat still. No idea on the rest of your issues, sorry.

06-15-2010, 10:12 PM	#9
Jessekrs123 Scooby Specialist Member#: 236927 Join Date: Jan 2010 Chapter/Region: NESIC Location: Oakville CT Vehicle: 1993 Legacy Sedan 1984 BRAT	A similar thing happened to me with my legacy. The engine would not be hot, but the temp gauge would jump and stall my car and it would not start for a day. I know for sure the engine was not hot because the valve covers were just warm. I'd go back the next day and it would run fine. It turned out to be a bad ground for me, after I fixed the ground I have never had the problem since. If it is a ground it could also be messing with your auto tranny, I did not have this problem because I have a 5 speed. Hope this helps, it was a big pain in the arse to find the ground, 3 weeks it took!

06-16-2010, 10:30 AM	#10
alejo Scooby Newbie Member#: 170081 Join Date: Jan 2008 Location: Tegucigalpa Vehicle: 2004 2.5RS blue	Hi, thanx for all your input! It was a bad ground with a sensor. Can´t remember which one it was. problem solved. The next issue is clenaing the radiator and changing the cap. Thanx, again.