Engine cutting out - help !
Discussion
Crank sensor was a good guess.
Another one, I hope, would be the fuel pump. They generally do not half run. More often they simply stop running at all, so one that cuts out then recovers is rare. However, if the pump was failing due to say heat... after it cools a bit...
Is the fuel filter due for service?
The only time I had a engine (not a Porsche engine) quit on me with no drama, the engine just quit running like flipping a light switch off, was when some water got into the fuel line and reached the fuel filter. The filter had a paper like element and the housing was transparent and I could see some rusty drops of water. I removed the filter, blew out the water, reinstalled the filter and the engine started -- albeit after a bit of cranking -- but ran as if nothing happened.
Might add the fuel level was really low, the tank steel, and the engine quit right in the middle of a hard/sharp turn.
Sincerely,
Rockster.
Another one, I hope, would be the fuel pump. They generally do not half run. More often they simply stop running at all, so one that cuts out then recovers is rare. However, if the pump was failing due to say heat... after it cools a bit...
Is the fuel filter due for service?
The only time I had a engine (not a Porsche engine) quit on me with no drama, the engine just quit running like flipping a light switch off, was when some water got into the fuel line and reached the fuel filter. The filter had a paper like element and the housing was transparent and I could see some rusty drops of water. I removed the filter, blew out the water, reinstalled the filter and the engine started -- albeit after a bit of cranking -- but ran as if nothing happened.
Might add the fuel level was really low, the tank steel, and the engine quit right in the middle of a hard/sharp turn.
Sincerely,
Rockster.
Fuel system appears to have been a very good guess !
After faffing about with the MAF (which was replaced only a couple of months ago anyway) and the ICV to no avail, it dawned on me that I'd not heard the fuel pump running while trying to start the car. Checked fuse, OK. Pulled relay, tapped it on the ground a couple of times, refitted it and I was able to start the car
I'll pick up a new relay, they're not expensive, but is that going to be the solution, or is it just a symptom of a dying fuel pump that's drawing too much power and overloading the relay ? I noticed that the fuse is 25A but the relay is only rated 15A. If the pump is drawing 20+ amps I imagine it'll eventually kill the relay even though it doesn't blow the fuse.
No idea how old the fuel filter is either, so I'll stick a new one of those in too. Looks easy enough.
After faffing about with the MAF (which was replaced only a couple of months ago anyway) and the ICV to no avail, it dawned on me that I'd not heard the fuel pump running while trying to start the car. Checked fuse, OK. Pulled relay, tapped it on the ground a couple of times, refitted it and I was able to start the car
I'll pick up a new relay, they're not expensive, but is that going to be the solution, or is it just a symptom of a dying fuel pump that's drawing too much power and overloading the relay ? I noticed that the fuse is 25A but the relay is only rated 15A. If the pump is drawing 20+ amps I imagine it'll eventually kill the relay even though it doesn't blow the fuse.
No idea how old the fuel filter is either, so I'll stick a new one of those in too. Looks easy enough.
Edited by sundayjumper on Tuesday 15th May 12:21
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