proper thermostat
Le Mans Master
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From: Clifton Park, NY ............Clearwater, FL ... 85 Original Owner
Racer
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From: Taunton MA
Race Director
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you lost me here - what switch? located between the first 2 cylinders on the drivers side - ??? I thought the coolant temp switch was located on the front of the intake manifold. we are talking an L98 motor, right?
Team Owner
Joined: Dec 2000
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From: SE NY
Cruise-In II Veteran
Indeed the ECM temp indicator is in the front of the intake base; the sensor between #6 & #8 is for the temp readout on the dash.
The main fan can be controlled on/off at lower temps by either reprograming the ECM or installing a manual fan switch.
I've been running a 160deg F T-stat in my '88s for 14yrs with great results. For city traffic I simply unplug the small connector in the A/C pressure line to run the main fan all the time. On the highway, forward speed creates enough air flow.
The main fan can be controlled on/off at lower temps by either reprograming the ECM or installing a manual fan switch.
I've been running a 160deg F T-stat in my '88s for 14yrs with great results. For city traffic I simply unplug the small connector in the A/C pressure line to run the main fan all the time. On the highway, forward speed creates enough air flow.
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Racer
Joined: Mar 2014
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From: Taunton MA
Indeed the ECM temp indicator is in the front of the intake base; the sensor between #6 & #8 is for the temp readout on the dash.
The main fan can be controlled on/off at lower temps by either reprograming the ECM or installing a manual fan switch.
I've been running a 160deg F T-stat in my '88s for 14yrs with great results. For city traffic I simply unplug the small connector in the A/C pressure line to run the main fan all the time. On the highway, forward speed creates enough air flow.
The main fan can be controlled on/off at lower temps by either reprograming the ECM or installing a manual fan switch.
I've been running a 160deg F T-stat in my '88s for 14yrs with great results. For city traffic I simply unplug the small connector in the A/C pressure line to run the main fan all the time. On the highway, forward speed creates enough air flow.
http://www.ecklerscorvette.com/corve...1984-1995.html
Team Owner
Joined: Dec 2000
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From: SE NY
Cruise-In II Veteran
If his '87 does not have the booster fan option there is a plug between #1 & #3 spark plugs into the coolant jacket that can be removed and a low temp switch installed.
From there it is a simple matter to run a wire to the ECM input to the main fan relay located below the master cylinder on the inner fender well.
From there it is a simple matter to run a wire to the ECM input to the main fan relay located below the master cylinder on the inner fender well.
Racer
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From: nth ridgeville ohio
thermostat
Team Owner
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From: Athens AL
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Stock is 195F. You should notice the coolant temp run to this temp in the morning or from cold, and then pause there. It may equilibrate with the oil before going much further.
Race Director
Joined: Apr 2002
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From: Anaheim CA
I have an AC Delco thermostat in my car. It consistently runs at about 180° on cold days, so I thought it was a 180°. I recently took it out and it is definitely marked 195° (which is what I intended to put in there).
If your cooling system runs at more than 200° putting in a lower temperature thermostat will not change that. You need to change the radiator and/or cooling fan(s) (or when they come on) to get the temperature down.
If your cooling system runs at more than 200° putting in a lower temperature thermostat will not change that. You need to change the radiator and/or cooling fan(s) (or when they come on) to get the temperature down.