Technical poor idle after changing timing belt help please

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Technical poor idle after changing timing belt help please

dan86

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My mechanic changed my timing belt 1 week ago and since when idle the car is on 800rmp feels like it will cut off any minute and its very noisy and vibrates when idle.The mechanic said he cleaned the lmbda sensor and it was apparently full of dust but the symptoms are still there help please guys the car sounds like a diesel now.
 
My mechanic changed my timing belt 1 week ago and since when idle the car is on 800rmp feels like it will cut off any minute and its very noisy and vibrates when idle.The mechanic said he cleaned the lmbda sensor and it was apparently full of dust but the symptoms are still there help please guys the car sounds like a diesel now.

I'd suggest the timing belt is fitted a tooth or two out....
 
You need the specific timing tools for the 1.6 cambelt (camshaft locking templates and dial gauge). Guessing or using paint-marks is no good- seen it a million times.

Only has to be 0.1mm out to run like a turd.
 
THANKS GUYS FOR QUICK REPLIES I THINK I HAVE FOUND THE ANSWER TO MY PROBLEM IN PREVIOUS POSTS WHICH I WILL PASS ON TO MY MECHANIC.

in my experience this is likely to be timing related.. if they were a tooth or 2 out .. that ticking noise is what you get..and it is easy to make the mistake too (timing kit comes with a crank template/holder.. template is supposed to a. fix crank during timing belt change and b. align the crank to tdc.. this is how fiat procedure describes its use.. problem is - crank timing marks are always off on petrols.. so that template sets wrong tdc.. this is why fiat places don't use it.. a tdc tool is used instead... if they did not use a tdc tool but followed the rest of the procedure - your timing would be off; if they did not rotate engine by hand and verified timing – it is likely to be off.. if they were drunk - it is likely to be off.. if they did not pay careful attention - it is likely to be off..) when timing is off you normally get poor mpg.. (is this the case?) does it knock more when cold? (it is possible they just forgot a wrench bit on/in the engine :ROFLMAO:). Rocker gasket is supposed to be replaced (according to fiat) but new or old.. if fitted without aid of silicon gasket all around it will leak (new gasket may take about a month to get started.. but get started it will).

edit--
And yes minute changes can finish off a variator on its way out.. this why you were advised (by me if i’m not mistaken) to do variator with your belt (as variator changes timing – symptoms would be the same) – likewise car would have less low rev power and poor [COLOR=#F77E1D ! important][COLOR=#F77E1D ! important]fuel [COLOR=#F77E1D ! important]economy[/COLOR][/COLOR][/COLOR] 12[X]


:worship:bIG THANKS TO 12X
 
1.6 dynamic poor idle after change of timing belt?

Hey guys I need help.
I went to the mechanic to change my timing belt he charged me £230 kit and labour.
First time they did it(it took them 2 hours) they havent done it properly and the car was working on 2 cylinders so I took it back right away and they tried again second attempt
got the car back that evening the mechanic said all fine however straight away I noticed that the idle was poor only 850 rpm and going up and down when stationary between 800 and 850 RPM
Took the car back again third attempt mechanic said they checked everything but first time when it was working on 2 cylinders they broke ignition coils changed all 4 had to pay £140:mad:.Got the car back today its steady at 850rpm but it vibrates again so much that the bonett vibrates too when car is on:bang:
When I press the gas it works fine on 950 rpm and doesnt vibrate is that the perfect idle for stilo dynamic 1.6??
as I forgot what it was when it was working properly. What should I do next where should I take the car?? to a fiat dealer?? please help guys. :worship:
Will computer diagnostics help solve the problem as the mechanic said that maybe the ecu should be reseted :cry: He said that if I take it to fiat dealer and they say the timing belt is out he will give me my money back for timing belt.:worship::worship::worship::worship:

I GAVE HIM THE INSTRUCTIONS I got from 12x
in my experience this is likely to be timing related.. if they were a tooth or 2 out .. that ticking noise is what you get..and it is easy to make the mistake too (timing kit comes with a crank template/holder.. template is supposed to a. fix crank during timing belt change and b. align the crank to tdc.. this is how fiat procedure describes its use.. problem is - crank timing marks are always off on petrols.. so that template sets wrong tdc.. this is why fiat places don't use it.. a tdc tool is used instead... if they did not use a tdc tool but followed the rest of the procedure - your timing would be off; if they did not rotate engine by hand and verified timing – it is likely to be off.. if they were drunk - it is likely to be off.. if they did not pay careful attention - it is likely to be off..) when timing is off you normally get poor mpg.. (is this the case?) does it knock more when cold? (it is possible they just forgot a wrench bit on/in the engine :ROFLMAO:). Rocker gasket is supposed to be replaced (according to fiat) but new or old.. if fitted without aid of silicon gasket all around it will leak (new gasket may take about a month to get started.. but get started it will).

car would have less low rev power and poor
 
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Re: 1.6 dynamic poor idle after change of timing belt?

A warm engine tickover for my 1.6 with aircon off is around 700rpm

warm engine tickover pic.JPG

Bear in mind though that if the battery is disconnected ( as it should be for such a job as a cambelt change) then all the stored fuel trims will be zeroed so it will take a little while for it to settle at new best settings

Even so, bonnet shaking on tickover shouldn't be happening and it sounds like the persons doing the cambelt change have made a right mess of it. How do you end up paying for coils that they broke?

the mechanic said that maybe the ecu should be reset
The ECU will be reset if they disconnected the battery, and they better have disconnected the battery
 
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Re: 1.6 dynamic poor idle after change of timing belt?

only one thing to suggest beyond getting a second opinion (fiat will not do it free).. you can try to clean the intake flap (see guides section). Am sorry you've had so many issues :( seems quite common during timing belt change too. You may also try to reset the ecu using an OBD2 scanner (see fiatecuscan.net).. i do not know why (as it should make no difference) but, in my experience, it does?! My 1.8 relearns quicker after a soft reset than via a battery disconnect.
 
Thanks 12x and all of you guys for your time and understanding.
I will clean the intake flap tomorrow and see if its any different (although the mechanic said he has already done that):bang:.However I dont have the OBD2 scanner so cant reset the ECU but do you think that if I disconnect the battery and reconnect it back again I should get the same efffect. Also 12[x] you said that the engine takes time to relearn the rev settings. Whats the period as the timing belt on my car was changed 2 weeks ago and the symptoms are still the same, the only change is that engine, that is ticking is better now as the coils have been changed nevertheless the rev is low and the engine feels as if it is going to stall after 10mins of running (n) the steering wheel vibrates when stationary and I can feel car vibrating when Iam siting in it but when Iam driving I have no probs.
Do you know how much will fiat charge roughly to check this problem if all else fails ???
ps Iam planing to sell the car soon but cant now that Ive got this problem no one will buy it with this fault :shakehead:.

Thanks Dan
 
Well my old tech simply said it can’t be cleaned without breaking things (on the 1.8 there is a wire mesh protecting the intake).. so you aren’t losing anything by cleaning it yourself (at lest that’ll be out of the way) you really do need to check if there are any error codes present (i.e. perhaps some sensor or connection was damaged) beyond that.. disconnect the battery for about an hour then when you reconnect everything put the key to mil to power on the electrical systems (don’t start it) and wait for a minute.. then pull the key and wait a minute more.. then start and let it idle (occasionally i.e. every 3 minutes revving up the engine to about 2-3k rpm) until it gets to the operating temperature.. then take it for a short drive and see how it feels (this is more or less the standard fiat procedure and ensures settings are re-learned). Beyond that (OBD2 reader is about 10 squid!) you will need to take it to fiat and I don’t think they’ll charge less then 30 min labor to scan the codes and 2 hours to check the timing (perhaps if you are lucky it’ll be less.. it’s been a while since I’ve had work done at the dealership oh the going rate for a main dealer was about 60 squid an hour.. you may try a fiat approved garage.. you can get a list of off fiat.co.uk they tend to charge 30-35 squid an hour)
 
Thanks for quick reply just got a txt from mechanic and he is suggesting that I should get basic settings on throttle body checked by official fiat dealer can you tell me what this does and how much it will cost???
Thanks a bunch 12[x]
 
the procedure above will re-train the throttle (but do clean it first).. I'd be guessing fiat will have a look at it for a 30 min or 1 hour labour charge. For your sake i hope there is nothing wrong with the throttle body itself (or any of the parts/sensors there in) as it is a very expensive part
 
Thanks for this link Argonought Iam taking it to a fiat specialist on saturday (that Sunnyside garage someone recommended in the thread) so that they can check the timing belt . :cry:
 
I completely agree it is probably the belt a tooth out, I would expect the rough idle and it should be so guttless it hardly pulls..?
 
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Hi guys
I went down to Sunnyside Garage in Chadwell Heath in Dagenham today and exhaust cam shaft was out of time. Big thanks to Vic who has re done my timing belt and all the guys there. They are very good professional, reliable and reasonably priced. I recommend them highly if you have a fiat or alfa romeo:worship:
 
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