Ford fiesta 1.25 zetec juddering
Discussion
Please help me. I have a fiesta 1.25 zetec suffering from juddering /misfire problems when accelerating ,it happens in all gears .I broke down in heavy rain new years day when the car started juddering over 50mph and felt like a loss of power, aa came out as i could not restart the car. They fitted a new coil pack and car worked fine for 40 miles till the juddering come back, but was even worse.
I put the car in to a local garage and they stuck it on a machine to find out if any error code was showing, it come up maf sensor so they fitted a new one the cleaned the computer again.The juddering has come back but now mainly 2nd/3rd when building up speed. The car starts fine which it did not before maf sensor fitted unless i gave it some gas for about a min else it would cut out. I spent £180 on it so far , and totally lost where to go next. Car has had new air filter,oil changed,oil filter,Ht leads and spark plugs in last 2 months. I am wondering if aa fitted a faulty coil pack or fuel related problem? Please help
I put the car in to a local garage and they stuck it on a machine to find out if any error code was showing, it come up maf sensor so they fitted a new one the cleaned the computer again.The juddering has come back but now mainly 2nd/3rd when building up speed. The car starts fine which it did not before maf sensor fitted unless i gave it some gas for about a min else it would cut out. I spent £180 on it so far , and totally lost where to go next. Car has had new air filter,oil changed,oil filter,Ht leads and spark plugs in last 2 months. I am wondering if aa fitted a faulty coil pack or fuel related problem? Please help
Left the car down my local garage for testing ,it was strange this morning cos i had no juddering after filling up and adding a little bit of redex. i took the car to the garage and no juddering again plus warning light gone out. i added tiny bit of redex yesterday afternoon before leaving work but when i started the car i noticed the warning light was on. This problem is doing my nut !!
It broke down in heavy rain. The OP doesn't specify whether the new parts he mentions were fitted before this or after to try and cure it but as he says "in the last two months" we presume before.
Diagnosis - poor quality non-OE HT leads were fitted and are already breaking down in the wet. Any time any car I've ever known breaks down specifically in the wet it's either HT leads or dizzy cap on older models.
It would certainly be a damn sight cheaper sticking another set of leads on to see what happens rather than letting a garage charge a fortune.
Rule 2 in my "diagnosing engine problems" article.
http://www.pumaracing.co.uk/diagnose.htm
Diagnosis - poor quality non-OE HT leads were fitted and are already breaking down in the wet. Any time any car I've ever known breaks down specifically in the wet it's either HT leads or dizzy cap on older models.
It would certainly be a damn sight cheaper sticking another set of leads on to see what happens rather than letting a garage charge a fortune.
Rule 2 in my "diagnosing engine problems" article.
http://www.pumaracing.co.uk/diagnose.htm
Edited by Pumaracing on Thursday 2nd February 16:16
villa1fan said:
Oil filter , new oil and air filter 2 weeks before break down . the rest trying to cure the juddering.
Hmmm. It would have been somewhat more helpful to have known from the start that the new plugs and leads were fitted after the problem manifested than being led to think they were fitted before.There's nothing like enough info given to properly diagnose this in that case. The fact it broke down in the rain seems to be a red herring if it's doing it in the dry as well. You say it judders when accelerating in 2nd and 3rd. Will it go through that point and run cleanly at higher speeds or in other gears or is the top speed severely limited?
Anyway even a semi-competent garage ought to be able to check whether it's spark or fuel that's the problem and then home in from there. Do a compression test too obviously just to eliminate mechanical possibilites.
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