2004 EX Radiator Fan Out of Spec

Thread Tools

Search this Thread

02-11-2016

Joelship

Registered!!

Thread Starter

Join Date: Feb 2016

Age: 38

Posts: 1

Likes: 0

Received 0 Likes on 0 Posts

Rep Power: 0

Joelship is an unknown quantity at this point

2004 EX Radiator Fan Out of Spec

2004 Ex 1.7L
Radiator fan isn't coming on until about 208 degrees Fahrenheit (spec is 199). Confirmed with OBD live info and infared temp gun.
Both fans come on when AC is turned on.
Any ideas really appreciated.
Thanks so much.

02-11-2016

GolNat

Prelude Owner

iTrader: (7)

Join Date: Sep 2011

Location: DE

Posts: 6,114

Likes: 538

Received 303 Likes on 214 Posts

Rep Power: 218

Re: 2004 EX Radiator Fan Out of Spec

What issues are you having that is making you check the fans?

Doesn't sound that far off to me. I'm sure there is an acceptable range.

02-11-2016

ezone

If you think a good mechanic is expensive, try hiring a bad one

Join Date: Dec 2011

Location: Midwest. Aiming about mid-chest

Posts: 32,019

Likes: 47

Received 250 Likes on 182 Posts

Rep Power: 493

Re: 2004 EX Radiator Fan Out of Spec

It's probably just fine.

Your scanner does not measure coolant temperature at the radiator fan switch, it's measuring temp as liquid is exiting the cylinder head area (ECT sensor) and heading for the upper radiator hose.

The fan switch is not in line with that sensor, nor is it in line with the upper radiator hose---where most people would try to measure temp, so that is not right.

The fan switch in in line with the LOWER radiator hose. The liquid exiting the radiator through the bottom hose has to be up to 199+ (or whatever the spec is) before the fan switch closes contacts.