Thermostat failure? Help
#1
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My Ride: 2005 525i 6MT
Thermostat failure? Help
Hello,
Having issues with my 05 525i with an m54. Everything in my research points to a thermostat except for the fact I still have hot hot heat..
-Symptoms-
Rough idle at times, as if it's running to rich.
Also, it will run rough with my foot on the gas and stumble intermittently but as soon as I'm off the gas it will run smooth. (Getting to much fuel? Because the thermostat is transmitting the wrong temp to the dme)
I've got an increased emissions warning
, I've also got a engine malfunction warning that says to drive moderatly so I don't harm the catalytic converter. ( my thought here is unburnt fuel will harm it..)
Sometimes while I'm on the highway, the car will loose all power and the rpm will float from 0-300. I'll have to turn the car off and on and then it will go away.
Is there a sensor as well? I see the t stat housing has an electrical connector.
I'm also going to look into the O ring for the sensor on the lower coolant hose..
Help,
Having issues with my 05 525i with an m54. Everything in my research points to a thermostat except for the fact I still have hot hot heat..
-Symptoms-
Rough idle at times, as if it's running to rich.
Also, it will run rough with my foot on the gas and stumble intermittently but as soon as I'm off the gas it will run smooth. (Getting to much fuel? Because the thermostat is transmitting the wrong temp to the dme)
I've got an increased emissions warning
, I've also got a engine malfunction warning that says to drive moderatly so I don't harm the catalytic converter. ( my thought here is unburnt fuel will harm it..)
Sometimes while I'm on the highway, the car will loose all power and the rpm will float from 0-300. I'll have to turn the car off and on and then it will go away.
Is there a sensor as well? I see the t stat housing has an electrical connector.
I'm also going to look into the O ring for the sensor on the lower coolant hose..
Help,
#2
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My Ride: 535i M Sport
Model Year: 2010
Those don't look like bad thermostat symptoms to me, besides, it's designed to fail open. Instead of guessing, pull the codes. If it's the thermostat (doubtful in my opinion) you'll have a cooling circuit fault code.
#3
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My Ride: 2006 530i, Jet Black, Tan, Premium, Steptronic
It is quiet possibly a faulty sensor. You need to read the codes with a BMW-specific code reader and start from there.
#5
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My Ride: 530i
Model Year: 2004
Engine: M54
Hello,
Having issues with my 05 525i with an m54. Everything in my research points to a thermostat except for the fact I still have hot hot heat..
-Symptoms-
Rough idle at times, as if it's running to rich.
Also, it will run rough with my foot on the gas and stumble intermittently but as soon as I'm off the gas it will run smooth. (Getting to much fuel? Because the thermostat is transmitting the wrong temp to the dme)
I've got an increased emissions warning
, I've also got a engine malfunction warning that says to drive moderatly so I don't harm the catalytic converter. ( my thought here is unburnt fuel will harm it..)
Sometimes while I'm on the highway, the car will loose all power and the rpm will float from 0-300. I'll have to turn the car off and on and then it will go away.
Is there a sensor as well? I see the t stat housing has an electrical connector.
I'm also going to look into the O ring for the sensor on the lower coolant hose..
Help,
Having issues with my 05 525i with an m54. Everything in my research points to a thermostat except for the fact I still have hot hot heat..
-Symptoms-
Rough idle at times, as if it's running to rich.
Also, it will run rough with my foot on the gas and stumble intermittently but as soon as I'm off the gas it will run smooth. (Getting to much fuel? Because the thermostat is transmitting the wrong temp to the dme)
I've got an increased emissions warning
, I've also got a engine malfunction warning that says to drive moderatly so I don't harm the catalytic converter. ( my thought here is unburnt fuel will harm it..)
Sometimes while I'm on the highway, the car will loose all power and the rpm will float from 0-300. I'll have to turn the car off and on and then it will go away.
Is there a sensor as well? I see the t stat housing has an electrical connector.
I'm also going to look into the O ring for the sensor on the lower coolant hose..
Help,
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