Zafira cdti engine help please

Zafira cdti engine help please

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broken biscuit

Original Poster:

1,633 posts

201 months

Wednesday 5th April 2017
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Can anyone help with problems with the wife's Zafira please?

Car is a 2010 '59' reg Zafira 1.7 cdti ecoflex 110bhp.

The car has started stalling at idle - it runs for 20 seconds at idle then cuts out. Turning the ignition off and back on and it restarts fine, yet trying without turning the car back on results in turn over but no firing. It does drive normally other than the stalling at idle issue - no good in the rush hour!

I have done basics as far as my mechanical knowhow goes -

New battery in keyfob in case it was immobiliser issue
Replaced fuel filter and done oil change for good measure.

I Googled the symptoms and found a lot of my symptoms pointed to the 'suction control valve' on the back of the fuel pump - this failing gave the same symptoms - flat spots, lack of performance, erratic idle, stalling.
I bought the correct replacement and fitted it. The fault is the same with the new valve fitted. If I unplug the valve, the fault disappears. Plug it back in and the fault is back.
Either I have a faulty valve or there is still a fault code I need to clear?

Any suggestions? I know there are still fault codes as I have done the pedal test ands it throws 3 codes - EGR, Fuel Pressure Regulator and another I cant remember off the top of my head. Ive got a theory that I need to get these codes cleared from the history before it will reset itself and run off correct values?
If anyone has any suggestions I would be grateful. I have ordered a 'tech2' lead from ebay and am going to a garage with decent Snap On diagnostics on Friday, but the dealers or other specialists cant see me until next week.






M1ne

1 posts

57 months

Saturday 6th July 2019
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Hi,
I have the same problem with my 2011 zafira 1.7 cdti. Changed the egr and scv - which improved idling, but problem still there.
Did you get a solution to it? Thanks

richard.george84

1 posts

30 months

Wednesday 20th October 2021
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hello, I have the same issue with your comments, I have a zafira 2011 1.7 dcti ecoflex.
Please did anyone manage to find cause of this cutting out on idle. thanks in advance.