blacknight
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- Feb 13, 2008
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- VX Executive
On my previous posts, I had mentioned that the car stopped on two occasions. the symptoms were driving along, then complete engine shutdown. absolutely NO WARNING. The power steering would go out, the brakes would fade and the car wouldnt respond to throttle. This is absolutely dangerous especially if if i negotiating a roundabout or in the fast lane. I had practically given up driving the car as it would cut out without warning. And after two trips to the agent, this was done to the car.
1. CAS sensor checked and replaced. It wasnt the sensor overheating or cracked, or the wiring grounding out on the engine block. I was told to splash cold water on it if it stalled, I did it the second time it stalled and nothing happened. no error codes brought up.
2. DFI module changed (TWICE), the DFI wiring harness was checked with a homemade test 'wire' and all wires register current, pins and connectors not flat and connections dry and tight
3. Spark plug leads all new, spark plugs not cracked, grounding wires all tight and not shorting out. Ignition leads all new. Alternator checked and brushes still good. Alternator connections all tight and no corrosion.
4. Battery tested (14.4V) connections had no corrosion. Relays changed (even if it was in good condition), fuses checked.
5. Vacuum hose replaced (one was cracked). I used heat resistant silicone tubing with a stainless steel braid and locked both ends tight
6. Throttle body cleaned, IAC cleaned, MAF sensor cleaned, air filter is new, air intake throat is not blocked
7. Fuel pump is new. Fuel pressure tested (now three times) it registers a good reading on the fuel regulator at all RPMs. Fuel filter changed, fuel line changed (the fiber one). the car always ran on RON98 from a new gas station
8. The wiring loom was 'massaged' when the car was idling, as i was trying to simulate the car stalling if it was an intermittent connection in the wires. Car ran well, even after tapping and shaking wires gently
9. Looked at the throttle cable, it was normal and not loose. No loose connections.
10. The car didnt overheat. the air conditioning, either off or on doesnt make a difference to stalling the car. engine and other fluids at normal levels.
I took the car out from the care of the Agent about 4 days ago, tried driving it around the neighbourhood but not on the highway in case the car stalls again. Brought it up to full operating temps, and cruised up and down the street for 2 hours. early morning, evening and under the hot afternoon sun to simulate all kinds of driving conditions.
spending close to about $1200 to check, fix and replace almost everything and the car havent stalled. It sure would be interesting to know what was the single factor causing it to stall. but at the back of my head, this was a demerit in my otherwise perfect VX. If only cars could talk...
1. CAS sensor checked and replaced. It wasnt the sensor overheating or cracked, or the wiring grounding out on the engine block. I was told to splash cold water on it if it stalled, I did it the second time it stalled and nothing happened. no error codes brought up.
2. DFI module changed (TWICE), the DFI wiring harness was checked with a homemade test 'wire' and all wires register current, pins and connectors not flat and connections dry and tight
3. Spark plug leads all new, spark plugs not cracked, grounding wires all tight and not shorting out. Ignition leads all new. Alternator checked and brushes still good. Alternator connections all tight and no corrosion.
4. Battery tested (14.4V) connections had no corrosion. Relays changed (even if it was in good condition), fuses checked.
5. Vacuum hose replaced (one was cracked). I used heat resistant silicone tubing with a stainless steel braid and locked both ends tight
6. Throttle body cleaned, IAC cleaned, MAF sensor cleaned, air filter is new, air intake throat is not blocked
7. Fuel pump is new. Fuel pressure tested (now three times) it registers a good reading on the fuel regulator at all RPMs. Fuel filter changed, fuel line changed (the fiber one). the car always ran on RON98 from a new gas station
8. The wiring loom was 'massaged' when the car was idling, as i was trying to simulate the car stalling if it was an intermittent connection in the wires. Car ran well, even after tapping and shaking wires gently
9. Looked at the throttle cable, it was normal and not loose. No loose connections.
10. The car didnt overheat. the air conditioning, either off or on doesnt make a difference to stalling the car. engine and other fluids at normal levels.
I took the car out from the care of the Agent about 4 days ago, tried driving it around the neighbourhood but not on the highway in case the car stalls again. Brought it up to full operating temps, and cruised up and down the street for 2 hours. early morning, evening and under the hot afternoon sun to simulate all kinds of driving conditions.
spending close to about $1200 to check, fix and replace almost everything and the car havent stalled. It sure would be interesting to know what was the single factor causing it to stall. but at the back of my head, this was a demerit in my otherwise perfect VX. If only cars could talk...
