*update* Hey AT Car guys.... please check in here. I need help with my 94 Toyota Tercel.

Oct 9, 1999
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where the heck do I start..

well I just got back from a 500 mile round trip to Central California coast. I didnt seem to have any problem getting there. However on the way back things started to happen.

When I came up the 101 to the hill at camarillio the car's water temprature gauge went to half. After which it kept at half, rising a bit and then falling down because the fan would kick in. Now in normal driving it sits about a centimeter above the letter "C" on the gauge. It only rises to that half when I am in stop and go traffic or under some stress. When under stress it rises a bit not going to half though. However it was running Hot this time (hot cause it never runs in that portion before.

Anyway this is what I noticed, while going up that hill I was doing 65 - 70 and very easliy. I thought it might have to do with teh cold air (it does perform better on cold days), but this was unusual. I was doing 70 and could have gone higher no problems. It wasnt going thru the "lack of power" routine that I get everytime I get to that hill. Normally I have to shift to 3rd gear (4 speed manual) and do about 55 Mph.. this time it went in 4th with no problems.

Anyway I finally couldnt take anymore of seeing the indicator up in the middle i pulled in for a break at my parents place. About 20 minutes later I took off. The car was in its normal operating range while I was on teh streets (didnt give a hint of overheating in stop and go traffic or at the lights), but as soon as I got on to the freeway it went to half.

What the fsck is going on?

I will check the oil and coolant levels when the car cools down enough. But what else coudl it be other than those two. I mean at 65 the cold air is plenty enough to cool the engine and the radiator and Yet it stayed at half. When I left LA I checked the coolant it seemed fine to me. The external reservior was between "L and F" (normal) and the radiator was full with teh green stuff. The engine oil I didnt check but I had checked it the previous week or two back so I didnt bother cause I had topped it off then.

Somehow the whole thing of having (extra) power than usual plus running hot is bugging me. Otherwise the car runs fine. Its running a bit noisy (could be idling high or the valve adjustment is needed). The car has 121900 miles on the clock. Its oil was changed about 5000 miles back (normally do 3000 - 6000 mile change - depending on driving conditions, but mostly 6000 mile changes).

Edit: In the last two years (2000, 2001) I had to change teh water pump cause it broke. I hope its not that, I dont have that much money to fix the bloody car. I rather sell it and get my Jetta VR6 (but my model wont show up until week 41 of the model year)

Thanks

TGG
 

lepper boy

Golden Member
Nov 2, 1999
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well, check make sure your water pump is working.... check the thermostat.. and if it isn't any of those, I would have your sensor checked out... I know on my old 83 toyota celica the sensor is crazzzzzzzzzzzzzzy.
dave
 

SonicFlux

Senior member
Mar 9, 2000
238
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1. Replace the thermostat.

2. Does your car have a cooling fan clutch? If so, it may need replaced.

Both are cheap to replace.
 

dave5317

Senior member
Jun 18, 2001
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I have a 93 tercel.4 spd manual transmission.No prob in overheat.The tempreature reach high when u stop waiting but it go down easily when the car's running. Mine wun go over half of the tempreature meter.Maybe u should change the coolant!

I rather sell it and get my Jetta VR6 (but my model wont show up until week 41 of the model year)


Anyone ever told you that u've got the lowest in fuel consumption car on road ???The 91-94 model are the best with lowest fuel consumption, even better than the latest Tercel!Furthermore, it wun worth more than 5k for that car! Drive it rough till it down. It runs 90 mph anytime without any prob......
 

TurboQuattro

Member
Oct 4, 2001
168
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<< 1. Replace the thermostat.

2. Does your car have a cooling fan clutch? If so, it may need replaced.

Both are cheap to replace.
>>



Yup, those two would be the most likely cause. Thermostats react across a range, and as they age they may not react as fast, or open as fully as they should. looks like yours is not opening and closing fully, restricting the flow of coolant. The other thing it could be is a bad water pump like kepper boy said. More expensive but not too bad.
 

CYLINDERMAN

Member
Oct 3, 2001
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The_good_guy, if you are saying it cools fine in traffic and slow travel but at high speeds starts to overheat. In general this is a symptom of a restricted cooling system. Get the cooling system flushed out and install new antifreeze, I do this every year as GP.

Hope this helps:)
 
Oct 9, 1999
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before today in normal driving (freeway or city streets) it would stay about a centemeter about cold. The only time it would heat up is when under stress or long period of idling.

But today even at 65mph (which prior times it would cool down if it its hot) it was sitting mid way.

Dave5317> I know the mileage that car gives is awesome. I cringe evertime I have to drive the BMW cause that take 91 and gives 25 miles/gal all while the toyota gives close to 40+miles/gal. (though I avegrage about 36). I intened to drive it to its death, but somehow when it does go down it goes down hard. The last two years I have had to fix the damn waterpump and each time I have a $1000+ worth of a bill. However unlike you I dont do 90mph, I sort of dont go over 80 (max 85 if necessary).

Anyway I had teh coolant changed earlier this year (was done by toyota when it went in for a service). The thermostat I know was changed in 2000, but i believe toyota changed it again in 2001. Its got less then 25000 miles on the coolant. I was thinking of the thermostat.. but i really have to check into it. Its quite possible its that and I am worrying too much. But the fact of the matter is teh position of the needle is unusual for my car. It never overheats like that.

I am goign to school now, but I am taking the bike, I will let the car cool a bit more down before i open and check the oil and the coolant.
 

CraigRT

Lifer
Jun 16, 2000
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What are you still bumping for? I think you got some pretty sound advice from these guys.. Why don't you ask a Mechanic or someone else whenever you can, and look into what they are talking about...

 

Ornery

Lifer
Oct 9, 1999
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How the hell do you end up with a $1,000.00 bill for a $25.00 water pump? :Q

Well, that's beside the point. I'm intrigued by the "power increase" you mentioned. I know if it's running too lean, she'll overheat. No idea how that could favorably effect the power, but it is a fuel related cause. So, I'd peek at all the sensors for the fuel mixture components. That probably means putting it on a computer/scope. God knows how much they'll want for that if they charge $1,000 for a water pump!
 
Oct 9, 1999
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well the service the first time was 1300 USD. I blown the water pump but also had blown the head gasket and a few more things. I had teh radiator rodded that time. The guy basically stripped teh car, replaced all the gaskets and stuff. He replolished the heads and did a few more things. That service took about a week. He also changed my timing belt and a few more things were done, including the timing belt

A year later (early 2001) I gave it for a service this time to teh dealership. The previous time it had gone to a private mechanic that lots of friends had recommended. I gave it for teh regular 100,000 mile service (which is their 30,000 mile service) and that is when they noticed the water pump was busted again. So that was changed again. They tuned it up, and changed a few gaskets and it was like 1000USD for that service.

I plan to give it to toyota for their 15,000 mile service @ $189 and have them tune it up and do other stuff to it. They will flush teh coolant and I want them to check the valve timings and my brakes and the rear suspension matrix. If possiblie I would like them to replace my lower control arm (its bent a bit) so it doesnt vibrate at speeds over 75.
 

CYLINDERMAN

Member
Oct 3, 2001
105
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Just A thought,

Install a mechanical temp guage, then you know exactly what temp your engine is running.
 

creedog

Golden Member
Nov 15, 1999
1,732
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Those cars do not have a fan clutch, but rather an electronic fan, so check the temp sensor which tells the fan when to come on. BTW
 
Oct 9, 1999
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*update*

Well I just got a call from the dealership. They foudn the problem....

1. I was low on oil for some reason, by 1 and 1/2 quarts. How the heck did that happen? ON monday night when I checked it was still between L and H closer to H.
2. The radiator pressure cap was busted, they replaced that. It was not pressursing the system and hence the problem.

I still dont understand why oil was so low. But he asked me to check on it time I fill up so if there is a problem they can find it. They said the gaskets are all fine and are not leaking oil, and the water pump is fine. The hoses are fine too.

SO the news is definately good.. :)