Technical Phonic wheel learn after timing belt change? 1.4 8V
- Thread starter Rado77
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Technical Phonic wheel learn after timing belt change? 1.4 8V
Not strictly necessary.
Your 2 timing sensors are obviously in the correct range.
Your 2 timing sensors are obviously in the correct range.
Bernievarian
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How oh hearth can a timing belt move by one half teeth ???
Cheers, Bernie
Cheers, Bernie
Aye. I've been puzzling over that too Bernie! If the OP means that the cam/crank timing is now half a tooth advanced or retarded compared to the position it was in with the old belt then I'm betting the EML would be lit. Bet it would drive pretty crap too!
From my experience with our Panda and Punto if you do the belt change carefully and don't disturb anything then it won't need a phonic wheel relearn. I guess also that as it has the ability to "learn" even if there is a slight difference it will, over time, learn this and compensate?
From my experience with our Panda and Punto if you do the belt change carefully and don't disturb anything then it won't need a phonic wheel relearn. I guess also that as it has the ability to "learn" even if there is a slight difference it will, over time, learn this and compensate?
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Half of tooth is possible - when mechanic changed cranshaft bearing, he did only markings by pen on old belt and valve cover. But after bearing replacemet he gave there old belt, but when he stretched it, he did not used fixator for camshaft and camshaft moved a little bit. After that I gave car to other service for timing belts and water pump replacement and they confirmed moved timing . Its possible when no fixators are used crankshaft/camshaft
It had the cam wheel set out of position..
With the effective misalignment relative to @ 0.5 of a belt tooths pitch.
With the effective misalignment relative to @ 0.5 of a belt tooths pitch.
Yes, especialy on 1.4 8V with camshaft variator - there should be alignment done by unscrewing variator bolt, then fixing crankshaft and camshaft with tools, give new belt, stretch it, fast variator bolt and finaly remove both fixators
Ok.
So
IF there was a mis.match of the signals from the sensors.. you would get in MIL at high engine speeds ( a common problem after garages do belts)
No MIL suggests it is all lined up within specificatuons
So
IF there was a mis.match of the signals from the sensors.. you would get in MIL at high engine speeds ( a common problem after garages do belts)
No MIL suggests it is all lined up within specificatuons
