Mike s 95 gst
Probationary Member
- 28
- 4
- Feb 20, 2016
-
Pembroke Pines,
Florida
Ok so over a grand in parts later and 3 months of researching this specific problem I've tried everything. Only thing left I can think of is the block or head got damaged.
So just randomly one day my car starts from never going over 185deg to a slow constant rise till near overheating then I shut it down. This just randomly started one day as I noticed my aem gauge was over norm temps along with the oem sensor reading hot as well. Once the car reaches past normal operating temp the afr's start to spike into the 20's and the car feels like it wants to fall on its face.
Here's what I've done so far trying to fix the issue:
1. new oem water pump from mitsu direct.
2. brand new radiator exact same as the one that was working flawlessly previously mishimoto.
3. checked for and repaired 2 minor common spot leaks.
4. flushed system.
5. new hks MLS head gasket, cleaned/checked head for straightness, with a thin film of copper spray for any imperfections which I have done over 10x with no issues.
6. at least 7 new thermostats
7. 40/60 cool/water mixture
8. compression test all cyl's within 10% did an at home leak down pressurized the cylinder and no bubbles in the coolant.
9. no leaks what so ever rad cap is topped off and system burped.
Wthhhh please someone give me something else to try. Wow I've had this car so long and never have I had a temp issue like this. Any help is much appreciated as all this work was not easy being handicapped thanks in advance guys.
BTW the valves were super dirty almost not seating dirty could that be an issue I know it can effect the afr's like I'm seeing?
So just randomly one day my car starts from never going over 185deg to a slow constant rise till near overheating then I shut it down. This just randomly started one day as I noticed my aem gauge was over norm temps along with the oem sensor reading hot as well. Once the car reaches past normal operating temp the afr's start to spike into the 20's and the car feels like it wants to fall on its face.
Here's what I've done so far trying to fix the issue:
1. new oem water pump from mitsu direct.
2. brand new radiator exact same as the one that was working flawlessly previously mishimoto.
3. checked for and repaired 2 minor common spot leaks.
4. flushed system.
5. new hks MLS head gasket, cleaned/checked head for straightness, with a thin film of copper spray for any imperfections which I have done over 10x with no issues.
6. at least 7 new thermostats
7. 40/60 cool/water mixture
8. compression test all cyl's within 10% did an at home leak down pressurized the cylinder and no bubbles in the coolant.
9. no leaks what so ever rad cap is topped off and system burped.
Wthhhh please someone give me something else to try. Wow I've had this car so long and never have I had a temp issue like this. Any help is much appreciated as all this work was not easy being handicapped thanks in advance guys.
BTW the valves were super dirty almost not seating dirty could that be an issue I know it can effect the afr's like I'm seeing?