dwcamaro91

Ok so im knew to this and looking for a little help I have a 91 camaro rs with a new 350 tbi thats running hot at idle cools down to about 220 when driving hereswhat I replaced water pump thermostat rad cap/ water doesnt bubble or steam in reservoir/ checked hoses and radiator for leaks couldnt find any also flushed radiator still running hot could someone help me out or point me in the right the direction I love my maro I just want it to run properly lol

sofakingdom

iTrader: (1)

Sounds pretty normal to me.

What makes you think it's running "hot"?

dmccain

iTrader: (2)

Try a lower temp switch

dwcamaro91

Will lower temp switch help if fan is rigged to run all the time when car is on?

dwcamaro91

I have to do like highway speeds to get it down 220 but if im just cruising it stays at about 235_240 when its at idle it flucuste really quick from like 220_240 then 220 then back to 240

dwcamaro91

I have a 195 tstat do you think switching it to 160 will help it run cooler?

Bob88GTA

iTrader: (2)

I agree with sofakingdom. Have you checked to make sure your fan shroud and lower air dam is in place? If your should is gone, it won't cool as if it had one. If air dam is gone on lower front, it won't cool as while driving.

Check that out. And with a lower temp fan switch.....if your fans are rigged to run all the time......No would be that answer.

dwcamaro91

Thanks so u dont think 235-240 is high? I jist put a new engine in the first week of driving never went pass 220 like the second or 3rd week is when temps started rising it never goes into the red though and the air damn and fan shroud are there and in good condition

dwcamaro91

And like at idle when I look at the temp gauge it will shoot up to 240 then back down to 220 really quick and vice versa

Bob88GTA

iTrader: (2)

Well getting up to 240 is kinda high. You said new water pump was installed??? Is it the right one for that engine as far as clockwise/counter clockwise rotation? Not sure, but I believe there is 2 types. Maybe somebody can chime in on this or do a search on it.

Where did the engine come from? year/model.ect?

Bob88GTA

iTrader: (2)

see this post
https://www.thirdgen.org/forums/cool...+pump+rotation

dwcamaro91

Yea new water pump was installed checked it for leaks doesnt make any sounds/ im not sure if its the right one or not I wouldnt know how to tell im new to this car stuff lol and im not certain about the engine I have to find the paper work on it I just know its a 350 tbi

dwcamaro91

Thanks for the help bro really appreciate this car is driving me crazy

abray1

The serpentine system on tpi cars 88-92 takes a reverse rotation water pump. The basics of the cooling system is when enough air goes across the radiator you get rid of heat. If you have a big enough radiator and big enough fan without losing air that should be going through the radiator core then the engine should be cooled. If your radiator is low on water then you will not be able to properly cool the engine. Make a check list. First I like to pull the right (passenger) front tire up on a brick to make sure the radiator cap is the highest point so the system will be full with no air. I like a 50-50 anti-freeze distilled water mixture with green anti-freeze and alsso two bottles of purple ice or water wetter. Check and make sure the fans are working when they are supposed to. Make sure the air dams are there and the air dams are sealed with the foam insulators installed at the sides of the radiator. Remember, it is all about getting the right amount of air across the radiator. I live in Arkansas and it is very hot here in the summer and I use a 170 stat and a be-cool radiator. An aluminum radiator with two, one inch rows of cooling tubes is the best design. Water wetter or purple ice (2 bottles) will help drop the temp 12 to 15 degrees.

mantaguy

iTrader: (5)

If you ain't Boiling or Steaming, you ain't Over Heating.Buy a Laser temp.gun,it could be that your sending unit or gauge is off.

Toofast4u

Wow....im just wondering....wow...those temps are high....my roc will stay between 195-205....i run just plain ol water in the summer with a lil help from hyper lube super coolant additive...drops temp by 20*+ degrees....also using 160 thermostat...my roc does not like the high temp...runs better at lower temps...also have dual fans set up to a bypass toggle...(one day they just decided to not turn on automatically)..

sofakingdom

iTrader: (1)

"Normal" temps for these cars are 205 - 210°. Not particularly hot, but not, 1960s American Graffiti temp either.

Temp gauges are NOTORIOUSLY inaccurate.

What does your infrared pyrometer tell you the REAL temp is? Until you tell us that, all the rest is monkey-spank.

dwcamaro91

Thanks guys for all the help and feedback I decided to bring it to the dealership and it turned out my temp sensor is bad the gauge was reading 240 but the actual temp was like 195 hopefully they have one at orileys one problem down one more to go whose good with starting problems ???? Lol

mantaguy

iTrader: (5)

Glad you solved your problem and your welcome..

dwcamaro91

Does anybody know the name of the temp sensor or sending unit that the temp gauge gets it reading from?? The mechanic told me its located between #1 #3 plugs but when I try to look it up I keep finding coolant temp sensor

mantaguy

iTrader: (5)

It's called an"Engine Temperature Sensor"

Your looking for one of these.Go to the parts store and tell them your year and model and engine size.
ours are a little different,but Auto zone or any parts store will stock it.

dwcamaro91

Thanks bro I tgink the person I called at autozone is stupid are something I told him that name and insist on telling me its the coolant temp sensor smhh

mantaguy

iTrader: (5)

There known as a coolant temp senders or sensors w/gauge or switch without gauges.

graysmoke

This is what worked for me.
https://www.thirdgen.org/forums/cool...cap-gauge.html

rusty vango

youre not relying on the stock temp gauge to tell you the truth,are you??. they are known to go a little "off" .check your actual temp with a IR temp gun. if your gauge proves to be bad ,there are NOS gauges to be had

rusty vango

hahaha ,you called auto zone. HAHAHAHA!!!

Cody Dines

having a problem with overheating trans am. I have a 1988 Trans Am 350 V-8 that keeps overheating. Takes a awhile to heat up unless you jump on then it heats up faster but it still takes at least 10 minutes of driving before it even gets to about 205 degrees. But if you keep driving it starts getting 230 and even more. It has a 180 thermostat in it. No coolant leaking no water leaking, nothing is leaking. Had a different mechanic pull the heads and nothing is wrong? Has a 2 core radiator with only one cooling fan that runs direct as soon as you turn the key on. Water pump seems to be working just fine as well. Can't seem to think of any thing else that could be wrong with it. Have one mechanic that thinks the radiator is clogged because when he flushed the system out they found bars leak in the radiator. Really thinks theres nothing wrong with the engine but something wrong with radiator. So need help?