1992 Overheating Geo Metro

DODGE2001

MEMBER
1992 GEO METRO

I have a 1992 Geo Metro with 1.0 liter engine, My problem is if I run 65 or more the it starts to overheat, I have replaced the thermostat, top radiator hose, and water pump, I flushed the radiator 3 times, I tested the cooling fan and it comes on at 210 degrees, the manual calles for 205, but I think that the five degrees should not be a problem. I made sure that my antifreeze is a 50/50 mix. But I can not seem to cure the problem, any advise would be greatly appreciated, I have racked my brains and can not find the solution, please help. Dodge2001

4 Replies

RASMATAZ

MECHANIC
75,992 POSTS

Pressure test the radiator cap if its okay-rebleed the cooling system and see what happens.

Always bleed air from cooling system after replacing coolant. Set heater for maximum heat. Remove radiator cap. Loosen drain plug and remove drain bolt (if equipped) from engine block. Drain coolant reservoir. Fill coolant reservoir to MAX mark with 50/50 water-coolant mixture. Loosen bleed bolt and fill radiator up to base of filler neck. Close bleed bolt when coolant flows out without bubbles. Tighten bleed bolt. With radiator cap removed, start and operate engine to normal operating temperature. Add coolant if necessary and check for leaks.

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Wednesday, August 22nd, 2007 AT 8:27 PM

DODGE2001

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Pressure test the radiator cap if its okay-rebleed the cooling system and see what happens.

Always bleed air from cooling system after replacing coolant. Set heater for maximum heat. Remove radiator cap. Loosen drain plug and remove drain bolt (if equipped) from engine block. Drain coolant reservoir. Fill coolant reservoir to MAX mark with 50/50 water-coolant mixture. Loosen bleed bolt and fill radiator up to base of filler neck. Close bleed bolt when coolant flows out without bubbles. Tighten bleed bolt. With radiator cap removed, start and operate engine to normal operating temperature. Add coolant if necessary and check for leaks.[/Quote:63e417ea0b]

Thanks very much for advise I have replaced the preasure cap, now when bleeding the air out of the system where would I find the bleed bolt for it, I am not seeing it right off can you help please. Thanks

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Thursday, August 23rd, 2007 AT 4:21 PM

RASMATAZ

MECHANIC
75,992 POSTS

[quote="dodge2001"]

Pressure test the radiator cap if its okay-rebleed the cooling system and see what happens.

Thanks very much for advise I have replaced the preasure cap, now when bleeding the air out of the system where would I find the bleed bolt for it, I am not seeing it right off can you help please. Thanks[/quote:8db6ec4b5f]

No bleed bolt loosen a heater hose.

Hope this helps
Good Luck

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Thursday, August 23rd, 2007 AT 6:09 PM

DODGE2001