Over heating problem '94 LT1 - Team Camaro Tech
Troubleshooting Diagnosing problems done here.

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post #1 of 2 (permalink) Old Nov 21st, 00, 07:15 PM Thread Starter
Join Date: Nov 2000
Location: BNE, QLD, AUST.
Posts: 1

I am having some problems with my '94 Camaro engine, and was hoping that someone could give me some techincal advice.

I have put a '94 LT1 from a camaro into my Toyota landcruiser, (with 4L60E auto). Recently I have been having some heating problems - the other day it actually stopped running while sitting at the traffic lights.

Now, in the past there were occasions where the fan would not switch on, and you could see the temp. rise, but this would happen irregularly.

I took my car back to the mechanics who installed the engine to have a look at it. They replaced the temp. sensor and performed some other tests. They told me that the old sensor may not have been sending the correct signal and the new one was, but the following problem is still occuring:

When they start the engine, the computer waits until operating temp. before switching the fan on (about 96'C), but then wont switch it off! It can get as low as 50-60'C if you leave the engine running that long...
When they then turn the engine off (the fan stops obviously) and start it up again, the fan wont switch on at all and the engine will boil..

There is no AC - the engine came with AC but there was no room for it under the hood.
The resistance readings are apparently accurate.
There is no damage to any wires leading to the computer - they took readings from the pins into the computer.
The relays are virtually new...
350cruiser is offline  
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post #2 of 2 (permalink) Old Nov 22nd, 00, 06:08 PM
Senior Tech
Join Date: Aug 2000
Location: Ft Worth, Tx USA
Posts: 288

If the ECM has been reprogramed sometimes the fan switching is not as dependable. Go to most any performance parts store and ask for an adjustable thremostatic fan switch kit, around $45.00.

Install this to work independent of the computer. It will have directions on how/to. You can adjust the on/off temp.

lnjstreetrods is offline  
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