Does anyone else running an EMS have issues with fan relay chattering? I looked at the manual to see where the fan relay is hooked up to on the EMS. The pin out says it is a PWM pinout. I guess the Pulse width frequency is too low or something because I do not know why the relay chatters.

Can anyone give me some insight as to fix.

 

Bump for answers.

 

not sure if this has anything to do with it but i remember their being a recall on the fan controller.... yup just found my carfax it shows there was a recall on 6/27/08. not sure if this has anything to do with that tho

 

hey did u figure the problem out?? i got a ems too and have the same problem

 

the recall was not a fan relay for evo 8. sorry for jumping in , that was for the lancer. have you checked the fan controller module? mine went out

 

how do i check for fan module. my relay be clicking non stop and the fan struggles to turn on. but when i turn on the a/c the relay stops clicking and the fan is running fine. i have changed that relay abt 4 times already it burns out after couple of months. i need to take car of this problem before it catches fire. sooo some one plz help me

 

I thought i was the only one with that problem.

http://www.youtube.com/watch?v=Qgo4ajZEntE

 

my fuse box only has 2 relay...is it suppose to have 4??


well i ordered a module yesterday and it shud be coming in today i will change it and let u guys know if it fixes the problem

 

I dont know if having ACD adds a relay?

 

ok i installed the module and still the same problem. this is getting really irritating.

 

update on my situation i just got this problem solved. if any one is having this problem after running a EMS u need to change ur setting in ur EMS for A/C and fan settings. or u can take it to ur tuner and have him do that for you.

 

Great news....got any info on which tabs to change?

 

i realli dont know cuz i had someone do it for me... but here is a link that may help u out....
http://forum.aempower.com/forum/inde...;topic=26092.0

but that problem is onli cuz of the setting of the ems...... my car is running like a charm...

 

Cool. Thats a good link. Thanks.

 

I thought I better contribute to the community. Anyways got my relay clicking issue solved as well. So that all knows the PNP setting on the base map works fine. Make sure the base setting are the same as the startup map for your box. Do a software compare to make sure the ac controls are the same under "setup" and also check the "options" under outputs.

In my case the guy who own the car before me adjusted the ac settings off the base but didn't really know what he was doing .

Basically the aem is confusing if you are triggering the relay to come on via the ac controll setting you do not want to go to options and tell it to turn on there as well. This will confuse the aem box and cause the relay to chatter like we are seeing. You will notice idle 5/6 is the output used for fan and LS11 is used for ac clutch (1313 box). You will notice both those output on the base map under "options" to be not checked as active. The reason is you don't want two places in the software tuning on the relay. Hope this helps all...