Register Login
Save up to 15% with Adrian Flux insurance!
Reply
 
Thread Tools
Old 08-03-2019   #1
Join Date: Feb 2019
Posts: 90
Thanks: 5
Trader Rating: 0
Slovakia 
Phonic wheel learn after timing belt change? 1.4 8V

Hi guys,

do I have to make phonic wheel learning prcedure after timing belt change? Old timing belt was moved half teeth... But car is running OK and no errors in ECU...

Thx,

Rado
__________________
Grande Punto (III) 1.4 8V m.y.2013 (350A1000)
Rado77 is offline Reply With Quote Quote 
Old 08-03-2019   #2
Join Date: Apr 2011
Location: Near the M4
Posts: 19,151
Thanks: 687
Trader Rating: 0
varesecrazy has donated!
United Kingdom 
Re: Phonic wheel learn after timing belt change? 1.4 8V

Not strictly necessary.
Your 2 timing sensors are obviously in the correct range.
Likes Pugglt Auld Jock, Rado77 liked this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

varesecrazy is offline Reply With Quote Quote 
Old 08-03-2019   #3
Join Date: Feb 2019
Posts: 90
Thanks: 5
Trader Rating: 0
Slovakia 
Re: Phonic wheel learn after timing belt change? 1.4 8V

Thx ;-)
__________________
Grande Punto (III) 1.4 8V m.y.2013 (350A1000)
Rado77 is offline Reply With Quote Quote 
Old 09-03-2019   #4
Join Date: Jan 2017
Posts: 2,079
Thanks: 258
Trader Rating: 0
Belgium 
Re: Phonic wheel learn after timing belt change? 1.4 8V

How oh hearth can a timing belt move by one half teeth ???

Cheers, Bernie
Likes Pugglt Auld Jock liked this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

Bernievarian is offline Reply With Quote Quote 
Old 09-03-2019   #5
Join Date: Oct 2017
Location: Edinburgh Scotland
Posts: 1,046
Thanks: 107
Trader Rating: 0
Pugglt Auld Jock has donated!
United Kingdom 
Re: Phonic wheel learn after timing belt change? 1.4 8V

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?
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides


Last edited by Pugglt Auld Jock; 09-03-2019 at 16:47.
Pugglt Auld Jock is online now Reply With Quote Quote 
Old 10-03-2019   #6
Join Date: Feb 2019
Posts: 90
Thanks: 5
Trader Rating: 0
Slovakia 
Re: Phonic wheel learn after timing belt change? 1.4 8V

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
Likes varesecrazy liked this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

Rado77 is offline Reply With Quote Quote 
Old 10-03-2019   #7
Join Date: Apr 2011
Location: Near the M4
Posts: 19,151
Thanks: 687
Trader Rating: 0
varesecrazy has donated!
United Kingdom 
Re: Phonic wheel learn after timing belt change? 1.4 8V

It had the cam wheel set out of position..
With the effective misalignment relative to @ 0.5 of a belt tooths pitch.
Likes Rado77 liked this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

varesecrazy is offline Reply With Quote Quote 
Old 10-03-2019   #8
Join Date: Feb 2019
Posts: 90
Thanks: 5
Trader Rating: 0
Slovakia 
Re: Phonic wheel learn after timing belt change? 1.4 8V

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
Likes varesecrazy liked this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

Rado77 is offline Reply With Quote Quote 
Old 10-03-2019   #9
Join Date: Apr 2011
Location: Near the M4
Posts: 19,151
Thanks: 687
Trader Rating: 0
varesecrazy has donated!
United Kingdom 
Re: Phonic wheel learn after timing belt change? 1.4 8V

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
Likes Rado77, Pugglt Auld Jock liked this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

varesecrazy is offline Reply With Quote Quote 
Reply
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump
Similar Threads
Thread Thread Starter Forum Replies Last Post
(T) Phonic wheel self learn - In Progress 1.6 16v Hurrican Stilo 1 22-01-2018 17:23
(T) Using MES after timing belt change (phonic wheel) Pugglt Auld Jock Punto (2012+) 18 30-12-2017 15:20
(Tu) change phonic wheel on iaw16f grofone Cinquecento / Seicento 2 14-11-2016 19:59
(T) Error Code 1688 2nd Idle learn (Phonic relearn) mb69rolls Idea 1 17-03-2016 17:24
(G) Cam Belt/Timing Belt Change Just to be Safe quaffle Punto (Mk2/2b) 12 31-03-2011 16:51