i have a 94 chevy beretta with 3100 series engine i have already put a new temp sensor in and my fan just wont kick on. it comes on when i turn the heat on but thats it. i can turn the a/c on and the fan still wont come on. whats wrong with the fan? is there a way that i can hardwire it? would hardwiring it be bad for the fan?
2007-10-30 17:06:11 · 7 answers · asked by c d.o.t 3 in Cars & Transportation ➔ Maintenance & Repairs
it gets to the point where my car overheats bad
2007-10-30 17:09:26 · update #1
It is not the thermostat.
Do not rewire the fans to run diferently. Fix the real problem, don't make new ones.
The problem may be in the fan motor itself. Before you proceed, check the fuses especially the underhood fuses.
The Fan is run by a fan relay (or relays) and the relay is operated by the PCM. The PCM uses inputs from the temp sensor, AC controller, AC hi pressure sensor and Vehicle speed sensor to determine when to run the fan. The fact that the coolant fan never runs suggests it is NOT these inputs. Try this: with the engine off, unplug the fan motor. Get an older headlamp, you know the rectangular or round sealed beam type. Use jumper wires to connect the headlamp to the fan connector. Start the engine and turn on the AC. turn the AC blower on high and set the temp to cold. Shortly, the PCM should command the fan on. When it does the headlamp should light. If the AC compressor is engaged and you are getting cold air out the AC and the lamp does not come on, the problem is in the wiring/fuse/relay/PCM. If the lamp does light, you have a worn out fan motor.
2007-10-30 17:23:24 · answer #1 · answered by Anonymous · 0⤊ 1⤋
Take between the followers out and attempt working it direct. if the fan works possibilities are high that's interior the pc no longer sending the floor sign to the relays. in case you have a attempt gentle take a relay out and notice in case you have 2 hots. one would be for the solenoid and the different would be to bypass capability to the fan. the fan on the drivers edge is activated via the temperature sensor the fan on the passenger edge is activated while the A/C is became on. sturdy luck
2016-10-14 09:53:42 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Check the fan relay. You can hardwire the fan to the ignition if all else fails.
2007-10-30 17:22:37 · answer #3 · answered by Anonymous · 0⤊ 1⤋
I had this problem just a 6 month ago on my Acura RL and it turned out be thermostat. I replaced it and the fan started working properly and the car runs perfectly.
I just hope you have not caused other problems by monkeying with the car.
2007-10-30 17:19:13 · answer #4 · answered by Anonymous · 0⤊ 1⤋
check the fan relay and the thermo swtich at the bottom of the radiator. You can also hook the fan directly to the battery to see if it's working
2007-10-30 17:28:23 · answer #5 · answered by ASE_mechanic 4 · 0⤊ 1⤋
most common problem is the relay its clearly marked in the fuse relay box under the hood swap it and see if it works
2007-10-30 17:50:44 · answer #6 · answered by mobile auto repair (mr fix it) 7 · 0⤊ 1⤋
its possible that you may have a fan with a fan clutch. check it first this maybe your problem.
2007-11-03 17:08:35 · answer #7 · answered by HeisMe 4 · 0⤊ 1⤋