Question about Chevrolet Malibu
97 Malibu 3.1 L v-6 cooling fans wont turn on..(ORIGINAL PROBLEM)After following suggestions here, still no luck in finding WHY. put in switch at fan2 electrical connection, direct power from battery. This WORKS to turn fan on/off GREAT...but keeps setting P1652 (& P1653 one time) Erase code, MIL goes away, atart car, no MIL, but within 2 mins. comes back on. Something WACKY w/Relay center under hood too...while testing the 3 fan Relays,all tested good, but the MODE relay, 5 pin, where plugs in, seems to have reversed polarity? More positive then suppose to have? What could cause this to happen? AM I fighting a losing battle? Dont want overheating, but cant drive around in limp mode either! Worst gas mileage EVER!
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Posted on Jan 02, 2017
SOURCE: Cooling fan wont work
The water temp sensor is located near the thermostat housing. This sensor is what tells the ECM to turn the fan on/off. The water temp sending unit is located near the same area. You know you have the correct sensor is because the water temp sensor has a 2 prong plug. The water temp sending unit only has 1 prong.
Posted on Sep 27, 2008
SOURCE: cooling fan relay 1998 neon
on the left(driver's) side of the lower rad support. It's a small flat relay with a plug on the bottom and usually has a blue colored front. held on by two screws. Also, there may be more rad fan relays in the underhood fuse/relay box.
Posted on Feb 27, 2009
are you getting codes for incorrect gear ratio and shift solenoids? if so then you are in need of a complete transmission overhaul.
However before you do that, check on the drivers side of the engine compartment under the battery tray is a wiring harness that runs next to the transmission, after a leaky battery and years of service, the pink wire that goes from the tranny control module, on the passengers fender, to the tranny gets corroded and brakes inside the insulation, check powers and grounds and if all is ok then bring it to a tranny shop, the sun gear brakes alot in those units, had the same problem on my cousins 3.3L and had to do an overhaul.
sorry to be the bearer of bad news.
Posted on Feb 05, 2010
Here's a maybe answer. You keep changing the starters and testing things and it's not working, here's something you might want to consider.
It might be the ignition switch itself. IE where you put the key in, you said you turn the key and nothing happens. I would suggest that it might be the ignition switch. But since i don't like ford to much i wouls suggest this as a maybe only, not to familiar with ford. Hope this helps.
Posted on Apr 01, 2010
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A/C refrigerant pressure exceeds 1 310 kPa (190 psi).
After the vehicle is shut off if the engine coolant temperature at key-off is greater than 140?°C (284?°F) and system voltage is more than 12 volts. The fans will stay on for approximately 3 minutes.
The BCM and PCM/ECM command High Speed Fans on under the following conditions:
Engine coolant temperature reaches 110?°C (230?°F).
A/C refrigerant pressure exceeds 1 655 kPa (240 psi).
When certain DTCs set.
The three relays are located in the under hood fuse / relay box ! You need to have it checked for DTC'S -diagnostic trouble codes ! An you need a GM Tech 2 scan tool !
This diagnostic procedure supports the following DTCs:
DTC P0480 Cooling Fan 1 Relay Control Circuit
DTC P0481 Cooling Fan 2 and 3 or S/P Relay Control Circuit
DTC P0691 Cooling Fan 1 Relay Control Circuit Low Voltage
DTC P0692 Cooling Fan 1 Relay Control Circuit High Voltage
DTC P0693 Cooling Fan 2 and 3 or S/P Relay Control Circuit Low Voltage
DTC P0694 Cooling Fan 2 and 3 or S/P Relay Control Circuit High Voltage
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