engine

35

Asked by Jun 09, 2008 at 07:24 PM about the 1989 Chevrolet Camaro IROC Z

Question type: Maintenance & Repair

keeps running really hot even when on the highway, have put new rad in changed thermostat and fluid is fine, also the fans work fine.

20 Answers

5

hows ur water pump doin, check ur pully and ur belt for slippage.

5

also check ur oil pump and pick up tube may be restricted. ur oil cools ur pistons. also ur piston rings should transfer the heat to the cylinder walls and ur water jackets on the other side of the walls will carry the heat away so maybe ur rings r bad.

stuck theromstator blown head gasketor your temp control senser is bad telling the computer it is hot when it it is acutally not,is it boiling over.

1 out of 1 people think this is helpful.
35

Air lock maybe?

7,555

I would guess air in the block keeping the fluid from flowing properly, or a stuck thermostat... I know you just replaced the thermostat, but they tend to be pieces of s*** and it's not unheard of for them to be bad before installation. It may be the temp control sensor as someone above stated. I would start by letting the car idle with the rad cap off to see if any air gets out of the system... Simplest thing to try(and free)

1 out of 1 people think this is helpful.
7,555

Just an FYI If oil pump was blocked to where heat is overcoming a cooling system with new components, then there should be an oil pressure light somewhere. Secondly your rings don't cool your engine(they are a friction point that generates heat actually)

70

make sure the air baffle under the radiator isn't missing or shot

35

I dont think its the water pump because it was just replaced with the engine. Its a rebuilt 305. Also it wants to overheat while Im on the highway which is specially weird, cause thats when it should cool off the most. Its never overheated only because I slow down so it wont. Also after running on a hot day pretty hard I checked the overflow and it was "foamy" no oil but it was foamy. Im not sure if its the gasket I hope not but usually you'll find oil in the coolant or other way around. Ive replaced the thermostat twice. Ive had the mass air flow censor changed, dont know if that could make a difference. Please help.....

35

what is the baffle under the rad??

35

its not actually boiling over because I wont let it. I slow down when Im on the highway otherwise it would probably overheat.

35

I just replaced the belt and the water pump was replaced with the engine.

9,445

just a simple solution---when was the last time the radiator cap was changed. I had a 87 pontiac gta, it did the same thing and it was just a radiator cap. Also check the air dam mounted in the nose of the car, it deflects air from the ground into the radiator. should be a three piece unit on your model. Although i had an 82 trans am with a 396 big block i installed and it did not overheat, and I had removed the air dam.

9,445

also sensors only tell you what is going on in an OBD1 system, would not cause it to overheat. Removing the radiator cap would just cause it to overheat quicker. The function of the radiator cap is to provide pressure in the cooling system lowering the overall boiling point. The more rpm's you turn, the more pressure that is fed back to the cap allowing for release into the overflow container.JUST FYI

125

check your water pump, and hope you didnt blow a head gasket, if you did blow a head gasket go to a drug store and get some liquid glass and pour it in your radiator you wont have a problem with your head gasket after that, i have the same camaro as yours and mine did the same thing so i sealed it up with liquid glass

5

try bleeding the air out of the system. an air bubble could be causing air-lock

585

well first off how hot is it running? tpi systems were made to run hotter than youd think. the fans were made to kick on at like 220 if im right, i had alot of the same problems so i put a new radiator in it and a 160 thermostat and still no luck. also ran direct power to the fan but still no luck. then i got an aluminium radiator out of a gta and my problems whent away my iroc had a brass radiator in it from the factory. also have hit that air dam on drive ways and such and bent it backwords and it ran consiterably hotter. i dont understand why it would run hotter on the highway but mine did the same exact thing.

1 out of 1 people think this is helpful.
195

todds right if the dam is gone or broken air goes up between the radiator and engine with the dam it goes in to the radiator

265

I'll bet you it was the water pump.

5

if it aint your water pump believe it or not your radiator cap can mess up and cause your engine to over heat it happend to me on a 92 camaro z28 so if it aint the water pump id check that out its somthing most people would never think of

195

the air damn on the bottom needs to be intact if not air flows under car instead of through radiator check it out

Your Answer

Add photo

Related Questions

  • Blown engine? 2 answers

    without taking the engine out of the 1985 Camaro v6 2.8l 5 speed. The previous owner said he blew the engine when he down shifted to prevent a collision. That's when it blew. How can I know for s...

    1985 Chevrolet Camaro Base

    -

    Maintenance & Repair

  • 79 z28 engine pull 2 answers

    I have a 79 Camaro with an engine puller but it seems like the engine puller is too shortl how do I remove the engine?

    1979 Chevrolet Camaro

    -

    Maintenance & Repair

  • start up on a engine 5 answers

    just finish rebuilding a 350 engine,can't seem to start it,its turns over,it has spark,but the fuel pump is not pumping the gas through the lines, i took the pump out, it is pumping,could it be that i...

    1983 Chevrolet Camaro

    -

    Maintenance & Repair

  • Engine swap 1 answer

    I have a 1996 Camero 3.4 v6 and an LT1 from a 1995, can i install this engine? Will the motor mounts match? I have the tranny and rear end to the LT1 as well?

    1996 Chevrolet Camaro Base

    -

    Maintenance & Repair

  • 350 engine 2 answers

    can a 350 engine fit on any chevy car

    1983 Chevrolet Camaro Z28

    -

    Car Customization

Camaro

Looking for a Used Camaro in your area?

CarGurus has 39,687 nationwide Camaro listings starting at $2,995.

ZIP:

Search Chevrolet Camaro Questions

Chevrolet Camaro Experts

#1 dandyoun
dandyoun
Reputation 1,590
#2 carGrrl
carGrrl
Reputation 1,120
#3 Tom Demyan
Tom Demyan
Reputation 990
View All

Related Models For Sale

Used Ford Mustang
719 Great Deals out of 39,136 listings starting at $1,000
Used Chevrolet Corvette
369 Great Deals out of 20,435 listings starting at $3,688
Used BMW 3 Series
1,833 Great Deals out of 41,344 listings starting at $1,250
Used Ford F-150
3,492 Great Deals out of 207,570 listings starting at $1,273
Used Pontiac Firebird
12 Great Deals out of 842 listings starting at $3,800
Used Jeep Wrangler
521 Great Deals out of 17,733 listings starting at $2,990

Used Cars For Sale

2017 Chevrolet Camaro For Sale
22,293 listings starting at $19,998
2016 Chevrolet Camaro For Sale
26 Great Deals out of 3,162 listings starting at $19,907
2015 Chevrolet Camaro For Sale
195 Great Deals out of 3,487 listings starting at $12,900
2014 Chevrolet Camaro For Sale
149 Great Deals out of 2,388 listings starting at $11,995
2013 Chevrolet Camaro For Sale
94 Great Deals out of 1,957 listings starting at $9,991