4wheelsqueal
Well-known member
The problems are in 713/1000. First the cooling issue. After starting, the check engine light comes on after 3-5 minutes. Hooked up a Snap-On logger and the coolant temp was reading 252 degree and climbed quickly to 316 degrees which i think is the limit of the coolant temp sensor. got out the infared heat sensor and the block, theromstat housing and the outside temp of the sensor all read about 168 degrees. There is a new ecm sensor and a new coolant temp sensor installed.I did solder on new plugs the ecm, coolant temp and ac fan switch sensor and after this was done, i noticed that the ecm sensor and the coolant temp sensor both have yellow with green strip wires. i did ground the coolant temp wire and it was in normal range and when the wire is unplugged, it reads -85 degrees. Now the fan issue. when i picked up the car, it did not have the passenger side main fan wiring that included the transistor, radiator temp sensor and fan wiring. i used a 1g dsm light plug and copied the wiring location from 555/2000. The fan has power on all the time. No key on, stone cold motor, unplugging radiator sensor, unplugging transistor, doesn;t matter. the only thing that shuts off the fan is pulling the 30 amp fan fuse under the hood. Also the a/c fan turns on after 5 min of starting the car and stays on the whole time. The a/c button in the car doesn;t turn it off or on even after replaceing the a/c button and changing the transistor pack. i have had the ecu gone thru and repaired by steve the ecu guy. Any idea's? have tried searching for these problems on here but haven't found anything on these problems.