2005 Volvo S60 2.4L non-turbo will not stay running.

[andybuzz2u]

OK. Some good news! It's the radiator fan relay! I don't know why it showed no code but that was it. The ECM 300A, and 310A are still present but it runs and no check engine light. Very odd. Had time to change the oil, tranny fluid and burp the coolant.

[jonesg]

OK. Some good news! It's the radiator fan relay! I don't know why it showed no code but that was it. The ECM 300A, and 310A are still present but it runs and no check engine light. Very odd. Had time to change the oil, tranny fluid and burp the coolant.

Thats odd , the relay will not stop it running.

[br0dy519]

Only thing I can think of is that it was preventing it from running and caused overheating….?

[andybuzz2u]

This is aggravating. The car ran fine on short trips. I finally got the bug and wanted to make a 478-mile road trip in the car. Well, I got 45 miles into the trip, and same old same old. I was on the side of the highway. I towed it home and am now contemplating what to do with the car.

[jonesg]

Code:
ECM-300A
Definition:
Camshaft Position (CMP) Sensor, Intake. Faulty Signal
Description:
The engine control module (ECM) checks that 5 camshaft flanks are detected during 2 crankshaft revolutions (i. e. that all camshaft flanks are detected on one camshaft revolution). The diagnostic trouble code (DTC) is stored if fewer camshaft flanks are detected. The diagnostic trouble code (DTC) can be diagnosed when the engine speed (RPM) is higher than a set value and refers to the camshaft position (CMP) sensor for the intake camshaft. NOTE: Substituted value signal from the engine speed (RPM) sensor is used.

Cause:
Intermittent open-circuit in wiring or splices
Incorrectly adjusted camshafts
Incorrectly installed camshaft position (CMP) sensor
Damaged camshaft position (CMP) sensor.

[jonesg]

Code:
ECM-310A
Definition:
Engine Speed (RPM) Sensor. Signal Faulty/Intermittent Fault
Description:
The engine control module (ECM) counts the number of teeth on the flywheel / carrier plate using the engine speed (RPM) sensor signal. The diagnostic trouble code (DTC) for an intermittent fault is stored if an incorrect number of teeth are detected during a set number of crankshaft revolutions. The diagnostic trouble code (DTC) for a faulty signal is stored if the fault is detected during several consecutive operating cycles. The diagnostic trouble code (DTC) can be diagnosed when the engine speed (RPM) is higher than approximately 1000 rpm. NOTE: Substituted value signal from camshaft position (CMP) sensor.

Cause:
Contact resistance or oxidation in the engine speed (RPM) sensor connector
Incorrectly installed engine speed (RPM) sensor
Damage to carrier plate / flywheel
Damaged engine speed (RPM) sensor.

[jonesg]

I would disconnect the battery, use a fox and hound style circuit tracer.
Remove the ECM and test the wiring between the cam sensor and the ECM terminal in the computer box.

Its either the sensor or the wiring.

[andybuzz2u]

Ok, I have updates to this. I sold the car to my nephew. Problem fixed! Haha
No, seriously I did sell the car to my nephew. He discovered a broken reluctor on the intake camshaft that was giving all the problems. How that happened is a mystery.

[vtl]

It is good to have a handy nephew who can fix a problem you wasn't able to fix. Good for both: you won't own a headache anymore, he's got a nice deal on a nice car.

[jonesg]

it was listed in the possible causes.

Cause:
Intermittent open-circuit in wiring or splices
Incorrectly adjusted camshafts
Incorrectly installed camshaft position (CMP) sensor
Damaged camshaft position (CMP) sensor.

I detected a loose cam sensor on mine with vida , fault was "intermittent signal or signal out of range".