Question about Honda Pilot
Which ones, there can be 3 or more.
the one way far up front , is the A/C (condensor fan)
the 1 or 2 behind the engine radiator, are just that , engine cool fans.
the fsm covers these test. and varies by YEAR,
the fastest best source of this data. is
on newer cars, the fans are controlled by the PCM.
on older cars a separate module (engine) and relays both.
the first rule,is
iS the engine overheating. y/n. 200f not, 250 yes.
we use a $20 IR pyro gun to anwer that , easy and safe
no cut hands, or burns, point and shoot, magic.
ask for more...
we then pull the fan relay, still running (impossible ,if yes)
if relay cuts, fans , we then ask way
bad contoller or controller lied to.
in the case of PCM control the ECT is fibbing, or air in the block.
in the case of the seperate module cars, its bad or its sensor is bad.
the FSM covers these tests on all cars made, step by step
get one and keep car running for 10 more years.
Posted on Jan 01, 2014
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Posted on Jan 02, 2017
SOURCE: 2005 honda pilot will not start
I had a similar issue, but I think it's because I left the tailgate door open slightly and the built-in light killed my battery. I jumped my battery, but I wasn't able to start my car again and this time the door was closed properly. I was told by Honda that the batteries only last for about 2-3 years. I have since replaced the battery and no more issues.
Posted on Jul 27, 2009
SOURCE: fix honda pilot 2005 fan relay
It can be the A/C switch causing this, but not likely. Make sure to turn the A/C off when you stop. If it still does it after turning the A/C off, replace the thermal relay.
Posted on Oct 04, 2009
If the cooling fan shuts off after a few minutes with the ignition off, this is normal for most cars; it prevents hard starting in hot weather.
If it fails to shut off after a reasonable period, say 10 minutes or longer, the relay for the fan may be faulty.
If doesn't come on during running and the gauge is in the normal range, this is also normal.
If it doesn't come on when the engine temp is above normal, the sensor for operation has failed. This is normally located on the bottom tank of the radiator and will have either one or two wires coming from it and most have a hex base for removal and installation. These are fairly common failures.
Posted on Apr 06, 2010
SOURCE: audi a3
Does it keep running till the batt is flat? It could be the aircon condenser fan running - on the left as you stand in front of the car. This is a common prob with A3s of this age.
I have a '05 3.2L Quattro V6 and suffered the same prob. The batt is in the boot of the V6 and is sealed like Fort Knox so impossible to disconnect. After about 3 days with this the fan running constantly and having to put a charger on it every night I let the batt run completely flat to try and reset the complete system - no DIS lights - no starter motor clicks - DEAD. Then I jump started it and the prob disappeared completely. Everything is working perfectly ncluding the aircon. That was 4 days ago and 'touch wood' I've had no probs since. I know this won't work for everyone but it's worth a try before forking out £300+ for a new condenser fan unit. Good luck!
Posted on Apr 24, 2010
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