Ok, I have a '93 sunbird (sunchicken, lol). We just replaced the head and gasket. It is still overheating but strangely. The heat goes up to 3/4...but when we push the gas pedal it tends to drop 1/4 of the value that it is at. So at 3/4 when we push the gas pedal a couple times it goes below 1/2. Also, intermitantley, the heater will just blow cold air, then later it will blow warm air. any ideas?
2007-01-02 07:26:09 · 15 answers · asked by Jamie J 3 in Cars & Transportation ➔ Maintenance & Repairs
Also, for about a week we did not have a thermostat in...we just put it in a couple days ago...and nothing changed between not haveing one and having one
2007-01-02 07:29:04 · update #1
Sounds like you have a blocked radiator or the thermostat is malfunctioning. Replace your thermostat and check your flow through the radiator.
The easiest way to check your flow is to remove the lower rad. hose and plug it with your hand or other object. Now fill your rad. and leave the cap off. time how long it takes the radiator to completely drain the water.
It should only take 3 to 5 seconds for the rush of water to start trickling. If it takes longer you have a plugged radiator, replace it.
2007-01-02 07:32:53 · answer #1 · answered by dlk426 3 · 0⤊ 0⤋
The problem is you are not getting enough air flow through your radiator, Check to see if fins are smashed or blocked with bugs. Another possibility is you cooling fan and or clutch fan is defective. You can simply add a new after market cooling fan, I'm talking about a motorized fan, they cost about 35.00 at the a major auto parts store,. Stuck thermostat are easy to replace and cheap, get the loewst temp. thermostat for that vehicle. Like a 165.
2007-01-02 15:30:21 · answer #2 · answered by Brian Z 2 · 0⤊ 0⤋
check the radiator or the coolant. Also make sure your thermostat is working properly. I had an old car and it got HOT when it wasn't moving, but at freeway speeds it was fine. This was because at freeway speed the cool air blows into the engine, but when a car is at a stoplight there's no air blowing. Also check if your radiator fan is working properly
2007-01-02 15:31:10 · answer #3 · answered by SUPERMAN 4 · 0⤊ 0⤋
Hopefully, when you changed the head and gasket, you changed the thermostat and water pump. That will solve 98% of the problem.
2007-01-02 15:29:38 · answer #4 · answered by rex_rrracefab 6 · 0⤊ 0⤋
I suggest putting a brick on the gas pedal and sending it off into the sunset
2007-01-02 15:28:12 · answer #5 · answered by Anonymous · 1⤊ 0⤋
You have either air trapped in the cooling system or a plugging heater core it sounds like.
2007-01-02 16:39:25 · answer #6 · answered by gary t 4 · 0⤊ 0⤋
My car did this recently. Does ur car smoke? If so, heck ur pump the coolant runs throw. Coolant could be leaking out coz it's lose. That's maybe why ur car is doing what it's doing. U would need to tighten it or clamp it down.
2007-01-02 15:31:30 · answer #7 · answered by jayfrezzy 2 · 0⤊ 0⤋
It seems like the coolant system is not entirely purged of air.
Keep adding radiator fluid until the system is completely purged of air...
You can not overfill the system.. it will just burp-off into the burp tank.
2007-01-02 15:31:24 · answer #8 · answered by Anonymous · 0⤊ 0⤋
you need a new the thermostat and you might have so air trapped in your cooling system.
2007-01-02 15:30:40 · answer #9 · answered by Toby K 3 · 0⤊ 0⤋
Check your thermostat.
2007-01-02 15:28:56 · answer #10 · answered by Kiggbo 1 · 0⤊ 0⤋