Could stalling be connected to weak battery in key fob?
Discussion
2006 997C4S
My car stalled at the traffic lights yesterday. It's never happened before and it hasn't happened since. I had been driving along fast A roads and I pulled up at a red light in a small town. I wasn't really concentrating, but when I went to pull away I noticed that the engine has died and all of the usual ignition lights were on.
I restarted without problem and continued my journey into London without a problem. No warning lights on at all.
This morning the car was difficult to lock using the key fob buttons, but it did eventually work ok. I have since replace the key fob battery and the car is locking perfectly.
So.... could the weak key fob battery have caused the engine to stall??
My car stalled at the traffic lights yesterday. It's never happened before and it hasn't happened since. I had been driving along fast A roads and I pulled up at a red light in a small town. I wasn't really concentrating, but when I went to pull away I noticed that the engine has died and all of the usual ignition lights were on.
I restarted without problem and continued my journey into London without a problem. No warning lights on at all.
This morning the car was difficult to lock using the key fob buttons, but it did eventually work ok. I have since replace the key fob battery and the car is locking perfectly.
So.... could the weak key fob battery have caused the engine to stall??
That's what I'd put my money on!belfry said:
You were right! Scored bores. £12000 engine rebuild completed this weekend.
What sort of time line are you talking here after the 4th October.You say it happened on the 4th and hadn't happened before or since. But seeing your writing that on the 4th that wasnt long after it happened to say since?????.
So after the 4th, what made you take the plunge and spend £££ having the engine firstly checked and then £££££ to have it replaced.
Surely you didn't go to all that expense on the one stalling incident, when you could still have been driving the car as it was now. My 996tt Tip stalled as I turned into the drive 5 years ago, full lock and it just died. Hasn't done it before and hasn't done it since.
So whats the story, did it do it again, OK you have found scored bores, but if they were scored to that extent you would have had other problems or even just a few more stalls.
I think a bit more information would help future readers not to panic (or perhaps to panic) if their 996 or 997 ever stalls.
I suppose what I'm thinking here aloud is perhaps your car just stalled and you found scored bores but that had no bearing on the incident , scored bores depending on the extent still isn't the end for an engine. I just hope you didn't spend £12k for the wrong reasons.
Edited by Sunnysidebb on Monday 14th November 22:32
johnycarrera said:
Different engine to yours Frank ;-)
I know Johny, but I have this small nagging idea that yes the bores were scored, but was it really bad enough to change the engine. i was hoping the OP had a bit more history as now when a 996/997 stalls people might immediately be thinking "new engine".As an engineer I fully understand the consequences of scored bores and the ability to cause all sorts of problems. I also know that once you have found scored bores its only natural to want to have it fixed. but did the OP suffer any other problems. As IMO one stall is not enough evidence of a knackered engine.?? It might well have ran another 10-20k or more. It might not, but then I would have shelled out 12k and not before.
Edited by Sunnysidebb on Monday 14th November 22:39
Edited by Sunnysidebb on Monday 14th November 22:41
belfry said:
2006 997C4S
My car stalled at the traffic lights yesterday. It's never happened before and it hasn't happened since. I had been driving along fast A roads and I pulled up at a red light in a small town. I wasn't really concentrating, but when I went to pull away I noticed that the engine has died and all of the usual ignition lights were on.
I restarted without problem and continued my journey into London without a problem. No warning lights on at all.
This morning the car was difficult to lock using the key fob buttons, but it did eventually work ok. I have since replace the key fob battery and the car is locking perfectly.
So.... could the weak key fob battery have caused the engine to stall??
No. The key fob has nothing to *do* with the engine *once* the engine has started.My car stalled at the traffic lights yesterday. It's never happened before and it hasn't happened since. I had been driving along fast A roads and I pulled up at a red light in a small town. I wasn't really concentrating, but when I went to pull away I noticed that the engine has died and all of the usual ignition lights were on.
I restarted without problem and continued my journey into London without a problem. No warning lights on at all.
This morning the car was difficult to lock using the key fob buttons, but it did eventually work ok. I have since replace the key fob battery and the car is locking perfectly.
So.... could the weak key fob battery have caused the engine to stall??
When the key is inserted in the ignition and the key turned on an RF system in the dash transmits a RF signal to the RFID pill in the key module head. This energizes the RFID pill and it responds with its security code via another RF signal. If the code is received ok by the RF sytem in the dash and matches one of the codes in the car's security system the engine is allowed to crank. Whether the engine starts and continues to run after this initial exchange of the security code is up to other things, but not up to the key module and its RFID pill.
The battery only provides energy for the electronics in the key module (a tiny circuit board) to signal the door lock/unlock and trunk unlock codes.
My WAG is the car's fuel pump is the cause of the stalling.
Sincerely,
Rockster.
Edited by Rockster on Thursday 17th November 18:38
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