ISSUE RESOLVED
Drove to work fine, parked the car, and now it won't start. It does crank though.
1992 525i 5spd 314k miles
Few weeks ago, I replaced fuel filter, fuel pump, fuel pressure regulator, and fuel injectors due to a cold start issues. It took few cranks before it started but as I said, this was resolved few weeks back.
Started the trouble shooting:
Fuel Pump relay checked, It clicks with power on pins 85-86.
I have voltage on pin 30 on the fuel pump circuit/relay.
When I jumper the fuel pump relay, I can hear the pump running. While the pump was running, I tried to start it but once again only crank and no start.
Main relay checked and clicks with power on pins 85-86.
Checked the resistance of CPS (crank position sensor) and it was 498 Ohms.
After cranking the car for about 20 seconds, I took out the spark plug to see if it was flooded. Looks dry and doesn't smell of fuel.
Checked all the fuses under the backseat and all seemed fine.
Checked the Fuselink next to the battery and it seems fine (still white strip).
Checked pin 15 on the coilpack and I had voltage when it was on ON postion
No check engine codes but only the 1444 (no fault)
From what I have been reading, it seems that the crank position sensor controls when the plugs fire and the cam position sensor controls the fuel injection. So part of me things it is the CMP but what I also read is that you would throw a code which I don't have and the car might run but rough, also not the case.
I have not tested if I have spark because I am not sure how to do that since on the inside of the coilpack there is a spring for the spark plug.
I went ahead and ordered a new crank position sensor as well as cam position sensor just in case.
I have a spare DME but have not tested it but usually they don't go bad.
Thoughts? Ideas? Suggestions?
Drove to work fine, parked the car, and now it won't start. It does crank though.
1992 525i 5spd 314k miles
Few weeks ago, I replaced fuel filter, fuel pump, fuel pressure regulator, and fuel injectors due to a cold start issues. It took few cranks before it started but as I said, this was resolved few weeks back.
Started the trouble shooting:
Fuel Pump relay checked, It clicks with power on pins 85-86.
I have voltage on pin 30 on the fuel pump circuit/relay.
When I jumper the fuel pump relay, I can hear the pump running. While the pump was running, I tried to start it but once again only crank and no start.
Main relay checked and clicks with power on pins 85-86.
Checked the resistance of CPS (crank position sensor) and it was 498 Ohms.
After cranking the car for about 20 seconds, I took out the spark plug to see if it was flooded. Looks dry and doesn't smell of fuel.
Checked all the fuses under the backseat and all seemed fine.
Checked the Fuselink next to the battery and it seems fine (still white strip).
Checked pin 15 on the coilpack and I had voltage when it was on ON postion
No check engine codes but only the 1444 (no fault)
From what I have been reading, it seems that the crank position sensor controls when the plugs fire and the cam position sensor controls the fuel injection. So part of me things it is the CMP but what I also read is that you would throw a code which I don't have and the car might run but rough, also not the case.
I have not tested if I have spark because I am not sure how to do that since on the inside of the coilpack there is a spring for the spark plug.
I went ahead and ordered a new crank position sensor as well as cam position sensor just in case.
I have a spare DME but have not tested it but usually they don't go bad.
Thoughts? Ideas? Suggestions?
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