Two new gremlins. Any ideas?

Fundguy1 · 08-19-2016, 09:04 PM

#1 My boost logged 28 psi, which is what it's supposed to be, for a few seconds then dropped to 21psi. We don't think I have a boost leak. Could this be boost solenoid? Poor vacuum?

#2my csr started overheating and showing s radiator symbol after drIvins 5 hours today. Mostly highway on cruise control. It has a new radiator, hoses, and pump. I did notice s wet spot inside the car on the drive tunnel carper under the dash by the passenger foot area. Idk if it's related. Didn't smell like antifreeze. I let the car cool for a bit then temps dropped some. Then driving it after temps continued to drop and not climb. The thermostat is broken open but I can't see that being the issue.

Fundguy1 · 08-20-2016, 08:57 AM

?

jjbmuu · 08-20-2016, 04:09 PM

The wet spot is either a backed up a/c drain or a leaky evaporator, hopefully the first of the two.

Fundguy1 · 08-20-2016, 05:55 PM

Quote:

Originally Posted by J.J4ck0wsk1

The wet spot is either a backed up a/c drain or a leaky evaporator, hopefully the first of the two.

It's not the evaporator. A/C is cold as ice. Maybe heater core? It's a cooling system issue. Not an A/C issue

whosdady · 08-20-2016, 09:26 PM

Quote:

Originally Posted by Fundguy1

#1 My boost logged 28 psi, which is what it's supposed to be, for a few seconds then dropped to 21psi. We don't think I have a boost leak. Could this be boost solenoid? Poor vacuum?

#2my csr started overheating and showing s radiator symbol after drIvins 5 hours today. Mostly highway on cruise control. It has a new radiator, hoses, and pump. I did notice s wet spot inside the car on the drive tunnel carper under the dash by the passenger foot area. Idk if it's related. Didn't smell like antifreeze. I let the car cool for a bit then temps dropped some. Then driving it after temps continued to drop and not climb. The thermostat is broken open but I can't see that being the issue.

I'm guessing your CSF radiator is leaking. Maybe from a rock thrown up, a bad weld or a bad connection. It's likely very small. It's not related to the water in the footwell.

Fundguy1 · 08-21-2016, 08:35 AM

I don't think so. There's some coolant residue by the chargepipe area too. Not much but there.

Fundguy1 · 08-22-2016, 06:10 PM

Any other ideas?

ATH_M2 · 08-22-2016, 07:43 PM

Did the overheat symbol on (thermometer) or just the radiator symbol? If it is just the radiator symbol then you may have a leak somewhere as suspected but not overheating yet or if you cant trace the leak maybe the wiring came undone from the coolant tank?

Fundguy1 · 08-23-2016, 07:15 AM

It did it in stages. First rad symbol. Figured small leak. Couldn't see anything. Heat stayed low where it belongs. Then a few hours later the overheat symbol.

ATH_M2 · 08-23-2016, 12:04 PM

Quote:

Originally Posted by Fundguy1

It did it in stages. First rad symbol. Figured small leak. Couldn't see anything. Heat stayed low where it belongs. Then a few hours later the overheat symbol.

Does it look like coolant came out from the expansion tank cap? If it didn't then maybe you might have an electrical glitch/error vs actually overheating. When the water pump fails or car decides it wants to overheat coolant will blow out of the expansion tank cap. I would get it scanned to see the codes.

Fundguy1 · 08-23-2016, 07:08 PM

Turns out the expansion tank has a crack along one of the seems. Waiting to hear about the boost issue still.

08-19-2016, 09:04 PM	#1
Fundguy1 Major General 2032 Rep 8,339 Posts Drives: 335 e93 Join Date: Aug 2014 Location: Orlando, fl iTrader: (0)	Two new gremlins. Any ideas? #1 My boost logged 28 psi, which is what it's supposed to be, for a few seconds then dropped to 21psi. We don't think I have a boost leak. Could this be boost solenoid? Poor vacuum? #2my csr started overheating and showing s radiator symbol after drIvins 5 hours today. Mostly highway on cruise control. It has a new radiator, hoses, and pump. I did notice s wet spot inside the car on the drive tunnel carper under the dash by the passenger foot area. Idk if it's related. Didn't smell like antifreeze. I let the car cool for a bit then temps dropped some. Then driving it after temps continued to drop and not climb. The thermostat is broken open but I can't see that being the issue. __________________ '08 e93 AW 335i 6MT,Vargas Stg 2+ 20T clipped,VRSF catless dps & 7"FMIC,ER chargepipe&Tial, MMP inlets&outlets,Motiv Stg 2 fuel rail&dual disc clutch/fly, JB4G5,MHD w/Motiv tune,Fuel-it Stg 3 LPFP,Wavetrac LSD w/lockdown, KwV2,M3(Strut brace,frt control arms,steering wheel)AKE blk sub bush,re11 245/305,19x8.5et30&19x11et43,SmartTop,RE trans mounts,Msport rear bump & skirts,15%tint,ZSP knob,Stoptech rotors,241k miles
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08-20-2016, 04:09 PM	#3
jjbmuu 4ut0strd4 47 Rep 223 Posts Drives: 08 AW E92 335i 6 Speed Join Date: Nov 2011 Location: Florida iTrader: (0)	The wet spot is either a backed up a/c drain or a leaky evaporator, hopefully the first of the two.
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08-21-2016, 08:35 AM	#6
Fundguy1 Major General 2032 Rep 8,339 Posts Drives: 335 e93 Join Date: Aug 2014 Location: Orlando, fl iTrader: (0)	I don't think so. There's some coolant residue by the chargepipe area too. Not much but there.
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08-22-2016, 06:10 PM	#7
Fundguy1 Major General 2032 Rep 8,339 Posts Drives: 335 e93 Join Date: Aug 2014 Location: Orlando, fl iTrader: (0)	Any other ideas?
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08-22-2016, 07:43 PM	#8
ATH_M2 Banned 49 Rep 270 Posts Drives: LBB M2 Join Date: Jul 2011 Location: Florida iTrader: (0)	Did the overheat symbol on (thermometer) or just the radiator symbol? If it is just the radiator symbol then you may have a leak somewhere as suspected but not overheating yet or if you cant trace the leak maybe the wiring came undone from the coolant tank?
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08-20-2016, 08:57 AM	#2
Fundguy1 Major General 2032 Rep 8,339 Posts Drives: 335 e93 Join Date: Aug 2014 Location: Orlando, fl iTrader: (0)	?
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08-23-2016, 07:15 AM	#9
Fundguy1 Major General 2032 Rep 8,339 Posts Drives: 335 e93 Join Date: Aug 2014 Location: Orlando, fl iTrader: (0)	It did it in stages. First rad symbol. Figured small leak. Couldn't see anything. Heat stayed low where it belongs. Then a few hours later the overheat symbol.
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08-23-2016, 07:08 PM	#11
Fundguy1 Major General 2032 Rep 8,339 Posts Drives: 335 e93 Join Date: Aug 2014 Location: Orlando, fl iTrader: (0)	Turns out the expansion tank has a crack along one of the seems. Waiting to hear about the boost issue still.
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