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Car Forum / BMW Cars / December 2004Time to closed loop temp too long? (E36 328i)
I've started getting the "check engine" light on my '96 E36 328i, and using a Peake diagnostic took, I've discovered that the "Time to closed loop temperature is too long". My best guess is that the car isn't warming up quickly enough, so I've let it idle a bit longer on cold mornings before driving it. But can anyone tell me what is causing this? Is there a simple solution, i.e. replace a sensor, or something? Karl Winkler Lectrosonics, Inc. http://www.lectrosonics.com > I've started getting the "check engine" light on my '96 E36 328i, and > using a Peake diagnostic took, I've discovered that the "Time to [quoted text clipped - 3 lines] > causing this? Is there a simple solution, i.e. replace a sensor, or > something? Perhaps your thermostat is getting a bit lazy? I once had a situation where the car would warm up more slowly than it used to. Replacing the thermostat fixed the problem. The part is cheap, and if you have access to free labor (i.e. your own) it is worth a shot. > I've started getting the "check engine" light on my '96 E36 328i, and > using a Peake diagnostic took, I've discovered that the "Time to [quoted text clipped - 3 lines] > causing this? Is there a simple solution, i.e. replace a sensor, or > something? Perhaps your thermostat is getting a bit lazy? I once had a situation where the car would warm up more slowly than it used to. Replacing the thermostat fixed the problem. The part is cheap, and if you have access to free labor (i.e. your own) it is worth a shot. > > I've started getting the "check engine" light on my '96 E36 328i, and > > using a Peake diagnostic took, I've discovered that the "Time to [quoted text clipped - 8 lines] > thermostat fixed the problem. The part is cheap, and if you have access > to free labor (i.e. your own) it is worth a shot. Thank you for the input. I'll check into the thermostat and what it takes to replace it. Karl Winkler Lectrosonics, Inc. http://www.lectrosonics.com > > > I've started getting the "check engine" light on my '96 E36 328i, and > > > using a Peake diagnostic took, I've discovered that the "Time to [quoted text clipped - 11 lines] > Thank you for the input. I'll check into the thermostat and what it > takes to replace it. An update: it just got really cold here in sunny New Mexico (we even got snow)! And so it wasn't long before I realized that indeed, the thermostat was worn out and stuck open just as you'd suggested. So I got it replaced and now the "closed loop temp" code appears to be a thing of the past. Nice when it's something relatively simple... Thanks again for the input, Karl Winkler Lectrosonics, Inc. http://www.lectrosonics.com > I've started getting the "check engine" light on my '96 E36 328i, and > using a Peake diagnostic took, I've discovered that the "Time to [quoted text clipped - 3 lines] > causing this? Is there a simple solution, i.e. replace a sensor, or > something? I would guess the error message is in reference to the time for the 02 sensors to go into a closed loop condition. It might mean that the heater internal to the sensor is not working right. I'm pretty sure that when the heater fails (is open) a different error is logged. Maybe the relay that supplies the heater voltage is not working right? -Fred W SPAM > > I've started getting the "check engine" light on my '96 E36 328i, and > > using a Peake diagnostic took, I've discovered that the "Time to [quoted text clipped - 11 lines] > > -Fred W Maybe, but I think the O2 closed loop condition begins when it reaches a preset temperature, as a result of exhaust gasses, which should be minimally affected by coolant temp. > I've started getting the "check engine" light on my '96 E36 328i, and > using a Peake diagnostic took, I've discovered that the "Time to > closed loop temperature is too long". Oh that sounds familiar. I used to get that fault on my E36, also using the Peake tool. The car happened to still be under warranty, and they fixed it. But, keep in mind that those little Peake tools are not entirely accurate. I keep getting a fault that says something cryptic about cylinder 3 or some such. The diagnostic machine at the Beamer shop I use (much more expensive and sophisticated device) translates the fault as a minor gas leak, which they still can't find. -- Graham |
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