'94 Escort Overheating

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First of all, to introduce myself...
Im 16 years old, I purchased a '94 Ford Escort from a friend at work for $200, and had to replace the clutch. I enjoy working on cars and need a little bit of help with a problem I havent been able to figure out yet.

Car:
1994 Ford Escort
Manual Transmission
1.9L Engine
A/C, Power Steering

Problem:
About three weeks I was driving home on the freeway and realized that my heat gauge was completely pegged, not just at the 'H', but pegged to the right side. I became pretty nervous and limped it home as best I could. Me and my dad began diagnosing what could make it overheat so badly. First we checked the fan and found out that the rely wasnt working properly, so we replaced it. That didnt solve the problem. Next we figured the thermostat might be stuck shut, so we replaced it. But that didnt solve it either. Finally, this last week we changed out the waterpump, thinking that it was bad. Unfortunately it wasnt. So now Im posting here wondering if you guys have any ideas what could be wrong, considering what has been replaced.
-> Water Pump, Thermostat, Fan Relay

Thanks for any help you can give, right now Im just pretty frustrtated that I spend the last 3 evenings changing out a perfectly fine water pump. Thanks Again

~Polley24747

EDITED:
By the way, we also flushed out the radiator and its clean.

posted by  Polley24747

is it really overheated? did steam come out? make sure u have enough coolant and get out all air pockets in cooling system.
if guauge is all the way to H and u drove home without really overheating, then it could be temp sensor or wire shorting out to ground to move guauge ..

posted by  thongsai

Ok...today i went over to the local auto parts store and picked up a new temperature sending unit. I replaced the old one and started up my car. The temp guage acted the exact same as before. Since I've checked/replaced most all mechanical parts on the coolant system except for the radiator/hoses, what electrical part could be failing and what could i do to fix it?

posted by  Polley24747

Well, today I went over to the local auto parts store and picked up a new temperature sending unit. I replaced the old one, and then started the car. The temp guage still read that it was overheating. I then took a thermometer and placed it in the radiator fill cap and it read 180-190 F, is this normal op/temp? Since Ive replaced most of the mechanical parts of the coolant system, except for radiator/hoses, what electrical parts could be malfuntioning?

posted by  Polley24747

Well, today I went over to the local auto parts store and picked up a new temperature sending unit. I replaced the old one, and then started the car. The temp guage still read that it was overheating. I then took a thermometer and placed it in the radiator fill cap and it read 180-190 F, is this normal op/temp? Since Ive replaced most of the mechanical parts of the coolant system, except for radiator/hoses, what electrical parts could be malfunctioning?

**Accidentally double-posted, still getting used to using a forum.**

posted by  Polley24747

whoa.,, u didnt have to buy a new temp sensor.. check the wiring first b4 u buy parts.. try disconnecting the wire to sensor and see if it goes to h.. if it does, it is definitely a short to ground. 180 is normal temp.. 212? is water boil.. plus coolant and pressure radiator caps raises bioling point so its still good..

posted by  thongsai

hi my name is josh and i am 16 years old. i bought a 1994 ford escort last thursday and it had been sat in a yard for 6 months. my dad drove it down motorway for me and suddenly smoke started coming out of the engine and i had to have it towed to triple A leyland and they say the car needs a new water pump because the one in it leaked and overheated which caused the car to stop. how much will this cost do u reckon?
plz write back n e body ASAP.
thanks,
josh

posted by  josh_m_duffy

Josh,

I have a 94 Escort as well. It makes sense to replace the timing belt at the same time as the water pump to save on labor costs of replacing both separately. Parts and labor for both run $350-400 in my area. Each by itself is probably $200-$250.

posted by  nickrand

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