[HELP] Relay rebooting itself, noisy. - Third Generation F-Body Message Boards

DaRKSLaiN · 10-21-2009, 04:26 PM

Hi ! i´ve started my car this evening and i heard a horrible noise in the cockpit but sounds like it was on the engine bay, i opened the hood and i´ve found a relay (i suppose it is related to the cooling-fan system) constantly rebooting and doing a nose, even if you touch it you feel like mini-hits in his interior.

it´s this:

Could anyone tell me what´s his tech name to buy it up from Rockauto?

(I´ve wondered that it could be this : ACDELCO Part # 158240 {#14089936, 14103304} RELAY,FAN CONT 5-PIN OVAL SHAPE )

Do anyone of you guys have a problem like this any? Could be solved changing only that relay? (i even dont have the S.E.S lighted up, only lights up when doing contact you know, test mode)

Thanks a million in advance

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Ward · 10-21-2009, 04:48 PM

Yep, that's the fan relay, the one you found look like the correct replacement one. Does the relay get hot? Unplug it and check the connectors for corrosion, it could just be a bad connection.

DaRKSLaiN · 10-21-2009, 05:31 PM

Quote:

Originally Posted by Ward

Yep, that's the fan relay, the one you found look like the correct replacement one. Does the relay get hot? Unplug it and check the connectors for corrosion, it could just be a bad connection.

I´ll check it out Ward! The relay gets bit hot but not to stun me heheh, i´ll check for corrosion, but it even works ok, i have the stock thermostat and the fan starts to operate when 215F~, i even could start manually the backup fan with the AC controls.

Thanks!

Ward · 10-21-2009, 08:10 PM

Well, as long as it's not getting super hot, like hot enough to burn your hand, then it's probably fine. I had a similar problem, my fan motors were worn out, and drawing way too much current, causing the fan relay to get extremely hot and act flaky. I wound up burning up a fan relay, and melting the relay connector. Had to solder a new one on from a donor car.

DaRKSLaiN · 10-26-2009, 04:58 AM

Quote:

Originally Posted by Ward

Well, as long as it's not getting super hot, like hot enough to burn your hand, then it's probably fine. I had a similar problem, my fan motors were worn out, and drawing way too much current, causing the fan relay to get extremely hot and act flaky. I wound up burning up a fan relay, and melting the relay connector. Had to solder a new one on from a donor car.

Hi again!

Its so curious how this flaw works... the relay gets rebooting seldom when the car is once started up, bit hot, in first 5 mins it dont operate... then, when the car is over 1/4 of temp, it gets rebooting always "kra kra kra kra kra" but dont gets hot.

Then, when the car reachs the 220F limit (1/2 of temp) the Fan starts to operate and the relay shuts up. I have done to it a extensive cleaning in the contacts, but it´s still like this. I hope that replacing the relay with that one from rockauto will solve the things.

I´ve seen lots of relays and now im burned off, i dont know really which one will be a good replacement one for it.

I´ve seen : AIRTEX Part # 1R1246
FOUR SEASONS Part # 35895
ACDELCO Part # 158240

They aparently looks the same:

Could someone give me a hand?