Radiator fans

[lawyerdement]

I have a 2010 SHO. On two occasions, I have experienced overheating while idling. The problem seems to be intermittent. I believe this is being caused by one of the radiator fans not working correctly. I have noticed that the fan on the driver side seems to be running normal. The fan on the passenger side seems to be sluggish. In fact, the other day I reached down and gabbed the fan and it stopped spinning. Any idea why one fan works normally and other does not?

 

[kryptto]

I have a 2010 SHO. On two occasions, I have experienced overheating while idling. The problem seems to be intermittent. I believe this is being caused by one of the radiator fans not working correctly. I have noticed that the fan on the driver side seems to be running normal. The fan on the passenger side seems to be sluggish. In fact, the other day I reached down and gabbed the fan and it stopped spinning. Any idea why one fan works normally and other does not?

Just double checking here - have you recently changed the coolant? Could just be a bad fan - if you have Forscan you could see if you are logging any errors.

 

[djvalho]

I am having the same problem with my 2010 sho. So far, I checked the fan by running a wire from the battery to the fan. It worked fine, it actually spun fast. I replaced the fan control module and it is still doing the same sluggish spin or it would stop. I have read somewhere that the problem could be the cylinder head temperature sensor or wiring to the sensor. That involves taking off the lower intake to get to it. I have not done it yet but I would like to know if anyone has done this and how difficult is it?

 

[djvalho]

Ok guys, just to follow up. The sluggish fan is a bad fan. Both fans work together when the a/c is switched on. So if one is slow and the other isn't, change the fan. I changed my double fan and it made a world of difference, I can even feel the difference in performance because the engine is running at a cooler operating temperature. It took me a while to figure this out but at least the problem is solved.

 

[ShatteredMJ]

The 2010-2012 fan models are a PIA whenever one is bad (at times) the whole fan assembly has to be replaced. For 2013-2019 models when a fan fails it’s possible to fix it by replacing the clutches.

I wish SPAL had a drop-in, PCM controlled upgrade so people living in real HOT climates can have a little peace of mind. OEM fans are noisy already so bring on the SPAL noise.

 

[SloSho2110]

The 2010-2012 fan models are a PIA whenever one is bad (at times) the whole fan assembly has to be replaced. For 2013-2019 models when a fan fails it’s possible to fix it by replacing the clutches.

I wish SPAL had a drop-in, PCM controlled upgrade so people living in real HOT climates can have a little peace of mind. OEM fans are noisy already so bring on the SPAL noise.

You got a link for just a 2012 fan assembly

 

[Texas Marauder]

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[SloSho2110]

Cool do y’all know the operating temp for a sho with OE thermostat not 100% sure if it’s fixed

 

[Texas Marauder]

Don't know about others but, with a OEM thermostat my car consistently runs @178-181. If idling with a/c off fan comes on at @212, goes off at @205

 

[SloSho2110]

Don't know about others but, with a OEM thermostat my car consistently runs @178-181. If idling with a/c off fan comes on at @212, goes off at @205

Ok cause I’m sitting around 205 to 218 after swapping in fans and T-stat used to be like 188-198

 

[kryptto]

I have a 170 degree tstat, I am sitting under 190-200, even here in S Fla. Though the car is also tuned, can't say if tuner moded my temps.

 

[SloSho2110]

I have a 170 degree tstat, I am sitting under 190-200, even here in S Fla. Though the car is also tuned, can't say if tuner moded my temps.

I think I am airlocked rn cause today I spiked up to 239 and dropped all the way down to 190 and I passed a block test but tommorow I’m retesting and vacuuming the lines and doing fresh fresh coolant

 

[SloSho2110]

I think I am airlocked rn cause today I spiked up to 239 and dropped all the way down to 190 and I passed a block test but tommorow I’m retesting and vacuuming the lines and doing fresh fresh coolant

All at a stand still mind you

 

[kryptto]

All at a stand still mind you

Have you drained the system completely? What condition is the coolant in? These radiators can spring very small leaks that will clog the leaks, however cause a radiator blockage. Time to pull it out and look it over - if not get it pressure tested, replace.

My gut tells me you have a clogged radiator either internally or externally they can clog with dust and road debris. See the video go 8:25 in

 

[SHOdded]

I have a 2010 SHO. On two occasions, I have experienced overheating while idling. The problem seems to be intermittent. I believe this is being caused by one of the radiator fans not working correctly. I have noticed that the fan on the driver side seems to be running normal. The fan on the passenger side seems to be sluggish. In fact, the other day I reached down and gabbed the fan and it stopped spinning. Any idea why one fan works normally and other does not?

usually the engine fan / passenger side goes first. a lot of short cycles with oem programming.

 

[SloSho2110]

Have you drained the system completely? What condition is the coolant in? These radiators can spring very small leaks that will clog the leaks, however cause a radiator blockage. Time to pull it out and look it over - if not get it pressure tested, replace.

My gut tells me you have a clogged radiator either internally or externally they can clog with dust and road debris. See the video go 8:25 in

Thanks for pointing me in another direction had never had that happen before at my shop so it never occurred to me to try doing that. Doing a full coolant flush today then putting it under vacuum to test for leaks

 

[kryptto]

Thanks for pointing me in another direction had never had that happen before at my shop so it never occurred to me to try doing that. Doing a full coolant flush today then putting it under vacuum to test for leaks

Drain it at the radiator petcock, get it all out and look it over.

 

[SloSho2110]

Drain it at the radiator petcock, get it all out and look it over.

Found the most likely source of the problem the vent hose plastic had a hairline crack and under pressure was spewing air. So while it’s running was sucking air and losing microscopic amounts of coolant

 

[kryptto]

Found the most likely source of the problem the vent hose plastic had a hairline crack and under pressure was spewing air. So while it’s running was sucking air and losing microscopic amounts of coolant

These cars are a PITA