GMP Low Temp Cooling Fan Kit
04-16-2019, 03:04 AM
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GMP Low Temp Cooling Fan Kit
Recently I bought a GMP low temp cooling fan kit from Ecklers. My Corvette is an 86 and the instructions said it should be located on the left cylinder head, I looked and there was no place to install the part. I know they may have rebuilt or swapped the motor prior to me owning the car. I have a switch on the right cylinder head but I think its the temp switch that reads to the dash? I am completely lost on how to install this switch. Thank you for any advice.
04-16-2019, 01:59 PM
#2
Melting Slicks
Recently I bought a GMP low temp cooling fan kit from Ecklers. My Corvette is an 86 and the instructions said it should be located on the left cylinder head, I looked and there was no place to install the part. I know they may have rebuilt or swapped the motor prior to me owning the car. I have a switch on the right cylinder head but I think its the temp switch that reads to the dash? I am completely lost on how to install this switch. Thank you for any advice.
OK on the 86 the fan temperature switch is located on the passenger side aft of the dipstick ~ 2 inches.
Last edited by 3D-Aircrew; 04-16-2019 at 02:14 PM.
04-17-2019, 05:41 AM
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Yes I still have the Tuned Port Injection, I pulled the switch and tried to install the new one but it does not fit. I am wondering if this part will even work? Thanks for your help.
04-17-2019, 04:00 PM
#4
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Hello CresencioAragon!
Welcome to The Corvette Forum!! WE are glad you are here!
I just opened my 1988 Factory Service Manual and it shows the sensor mounted between cylinder #1 and #3 as being the "COOLANT FAN TEMPERATURE SWITCH". It has a green wire with a white stripe I think going to the sensor on my 1988 C4. Check for the hole and see if someone removed the switch as the car will run fine without it, just don't expect the cooling fans to work properly. I would imagine that your new switch just turns the fan earlier.
Just to be sure that we are speaking the same language the engine has cylinder numbers. While facing the front of the car standing in front of the radiator. The very front spark plug on the drivers side is Number 1,then #3,#5 and #7. On the passengers side bank you have cylinders (Starting at the front) #2,#4,#6 and #8.
The Factory Service manuals for your particular year are one of the first things any new Owner should get. They are available on DVD or in print. My 1988 has two separate books and supplement and is more expensive than the DVD version.
Good Luck with your Corvette, We'll help keep you on the Road!
Welcome to The Corvette Forum!! WE are glad you are here!
I just opened my 1988 Factory Service Manual and it shows the sensor mounted between cylinder #1 and #3 as being the "COOLANT FAN TEMPERATURE SWITCH". It has a green wire with a white stripe I think going to the sensor on my 1988 C4. Check for the hole and see if someone removed the switch as the car will run fine without it, just don't expect the cooling fans to work properly. I would imagine that your new switch just turns the fan earlier.
Just to be sure that we are speaking the same language the engine has cylinder numbers. While facing the front of the car standing in front of the radiator. The very front spark plug on the drivers side is Number 1,then #3,#5 and #7. On the passengers side bank you have cylinders (Starting at the front) #2,#4,#6 and #8.
The Factory Service manuals for your particular year are one of the first things any new Owner should get. They are available on DVD or in print. My 1988 has two separate books and supplement and is more expensive than the DVD version.
Good Luck with your Corvette, We'll help keep you on the Road!
04-18-2019, 11:48 AM
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If you have the RPO B4P booster fan option there will be a temp sensor between #1 & #3, else there will be a plug.
Try removing that plug and install your new temp sensor in that location.
Try removing that plug and install your new temp sensor in that location.
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04-18-2019, 12:30 PM
#6
OP also seems to be very unsure of what it is that's been purchased! OP could do him self a favor perhaps in mentioning 1st the part # of the kit purchased from Eckler.
Last edited by WVZR-1; 04-18-2019 at 01:02 PM.
05-09-2019, 05:29 AM
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Hello,
I know my fan works because I bought an OBD1 scanner from Auto Zone and plugged it in and my fan kicked on. The part number is 25-113224-1 This switch is supposed to replace the old switch located between cylinder 6 and 8. I know cylinder 6 and 8 are located on the passenger side close to the oil dipstick. This switch is too big and will not fit in the cylinder head, I do not have the RPO option which is the extra cooling fan.
I know my fan works because I bought an OBD1 scanner from Auto Zone and plugged it in and my fan kicked on. The part number is 25-113224-1 This switch is supposed to replace the old switch located between cylinder 6 and 8. I know cylinder 6 and 8 are located on the passenger side close to the oil dipstick. This switch is too big and will not fit in the cylinder head, I do not have the RPO option which is the extra cooling fan.
05-10-2019, 02:16 AM
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Do you know were is the coolant fan relay?
Is it is located on the left hand fender under the brake MC?
If so, remove the plug below #1 & #3 and tap into the control line for the relay.
Does your FSM show which wire into the relay comes the temp sw and which one comes from the ECM?
Is it is located on the left hand fender under the brake MC?
If so, remove the plug below #1 & #3 and tap into the control line for the relay.
Does your FSM show which wire into the relay comes the temp sw and which one comes from the ECM?
05-10-2019, 09:10 AM
#9
If you do NOT have the B4P aux cooling fan, there should still be a switch between #1 and #3 with a grn/wht wire. It is an over-ride switch for the main fan. (If the ECM controls fail, the switch takes over). Find the grn/wht wire. It is in the sub-harness branch that goes to the alternator. With the key = ON, but engine not running, ground the grn/wht wire. Main fan should run. If = YES, you've identified the wire, and verified that the circuit is intact. Just need a switch that fits the hole in the head.
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The kit by part # the OP says he purchased should 3/8-18 NPT switch and 'IF' his car had B4P he could use this switch for B4P OR he could choose to install it and use it as an 'over-ride/supplemental' as you've mentioned. Someone would need to offer up installation to be used as such. OP says he doesn't have B4P so there should be a plug.@ 1 & 3. OP hints it's still an L98.
OP seems very confused ..........................
OP - do you have the FSM (Factory/Field Service Manual)
Eckler install:
Last edited by WVZR-1; 05-10-2019 at 09:59 AM.
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05-10-2019, 02:18 PM
#10
Safety Car
