Had the check engine light go on today. I traced it to the tube going from the radiator to the resevoir. I had changed a securing ring to an aftermarket stainless one & failed to tighten it adequately. No damage. No overheating.
I've refilled the radiator with the mix of BMW coolant & distilled water. Do you have to reset the engine light or will it reset by itself? How long?
Thanks.
Fred
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| Reply » Check Engine Light for Low Coolant |
Reacted too quickly. It's a service engine soon light.
I assume this is not gas cap or coolant related & that it is emissions related. The thing is that there is no engine problem at idle or at speed at all.
Any explanations for this one?
Thanks
Fred
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| Reply » Check Engine Light for Low Coolant |
Quote: Reacted too quickly. It's a service engine soon light.
I assume this is not gas cap or coolant related & that it is emissions related. The thing is that there is no engine problem at idle or at speed at all.
Any explanations for this one?
Thanks
Fred | The service engine soon light is the check engine light in my car. You need to purchase or borrow a code reader. I have the Peake Research one. Around $150.
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| Reply » Check Engine Light for Low Coolant |
Quote: | The service engine soon light is the check engine light in my car. You need to purchase or borrow a code reader. I have the Peake Research one. Around $150. | Thanks Ron. I have the OBDII Vehicle Explorer on my laptop. Time to learn how to diagnose with it. Any recommendations?
Fred
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| Reply » Check Engine Light for Low Coolant |
Quote: Thanks Ron. I have the OBDII Vehicle Explorer on my laptop. Time to learn how to diagnose with it. Any recommendations?
Fred | I use that too.
It actually gives you much more info than the Peake tool once you learn how to use it.
The instructions are few and terrible.
For reading codes:
Connect to OBDII port.
Start the program.
Ignition to position two.
Once it connects click on codes and then request.
If there are any faults you will see the P codes.
You we need a list of the BMW codes for your car.
The peake codes are hexadecimal.
With the software you will get the P codes.
The BMW list has the decimal equivalent of the Peake hexadecimal code along with the P codes associated with it.
See the following from another post;
Back home I had faults 90 and 91 using the Peake tool. Fuel control, Cyl #1-3 and Cyl 4-6 = bank 1 and 2.
If you convert the 90 and 91 hex numbers to decimal you end up with the BMW codes 144 and 145. System too lean or rich bank 1 and 2. With the OBDII software I can get the P codes which narrow it down more.
BMW code 144 has P codes P0171 or P0172. 171 is bank 1 too lean and 172 is bank 1 too rich.
BMW code 145 has P codes P0174 or P0175. 174 is bank 2 too lean and 175 is bank 2 too rich.
With the OBDII software I was showing P codes 172 and 175 bank 1 and 2 too rich.
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| Reply » Check Engine Light for Low Coolant |
Quote: I use that too.
It actually gives you much more info than the Peake tool once you learn how to use it.
The instructions are few and terrible.
For reading codes:
Connect to OBDII port.
Start the program.
Ignition to position two.
Once it connects click on codes and then request.
If there are any faults you will see the P codes.
You we need a list of the BMW codes for your car.
The peake codes are hexadecimal.
With the software you will get the P codes.
The BMW list has the decimal equivalent of the Peake hexadecimal code along with the P codes associated with it.
See the following from another post;
Back home I had faults 90 and 91 using the Peake tool. Fuel control, Cyl #1-3 and Cyl 4-6 = bank 1 and 2.
If you convert the 90 and 91 hex numbers to decimal you end up with the BMW codes 144 and 145. System too lean or rich bank 1 and 2. With the OBDII software I can get the P codes which narrow it down more.
BMW code 144 has P codes P0171 or P0172. 171 is bank 1 too lean and 172 is bank 1 too rich.
BMW code 145 has P codes P0174 or P0175. 174 is bank 2 too lean and 175 is bank 2 too rich.
With the OBDII software I was showing P codes 172 and 175 bank 1 and 2 too rich. | Thanks very much for the details, Ron. Will free up some time tomorrow or Sunday to try it out. I'll post the results for some interpretation. It's kind of surprising to me. The car is a 2002 Z3 2.5 liter with auto transmission roadster with just over 12K miles (very easy one's at that). No symptoms other than the light. Have changed the oil several times & reset the idiot lights using your scheme. I think I wrote you more than a year ago when I first tried it.
Fred
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Check Engine Light for Low Coolant