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Author Topic: fuel / air?  (Read 1001 times)

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footloose

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fuel / air?
« on: 23 September 2009, 15:57:27 »
My 3lt v6 is acting as though its not getting enough fuel, only on occasions. When i accelerate it is sluggish and when i ease back on the throttle a bit she takes off ok.
or if i hold down the eccelerator as normal, when the revs are up a bit, around 35/40 ish it behaves normally.
I have absolutly no idea what can cause this.
Anybody had this before.
HELP> Please? :-/ :-/
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NiallyV6CDX

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Re: fuel / air?
« Reply #1 on: 23 September 2009, 16:10:49 »
Could be the MAF is faulty. Maybe try checking for any fault codes?
Also check the air filter is clean and there are no leaks in the intake manifold assembly, (would be evident by a hissing/ sucking sound).
If all is well there could be the fuel system is clogged. Do you know when the fuel filter was last changed?
Maybe try some cleaner additive in the fuel and give it some welly.
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footloose

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Re: fuel / air?
« Reply #2 on: 23 September 2009, 16:33:32 »
MAF recently fitted. But i have no ider when the fuel filter was last changed. Ive had the car two yrs and iv'e never changed it. Whats the proper interval. I had better have a looksee. thanks mate. :y
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rustym95

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Re: fuel / air?
« Reply #3 on: 23 September 2009, 16:33:50 »
could be the fuel filtter, :y
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cem_devecioglu

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Re: fuel / air?
« Reply #4 on: 23 September 2009, 22:06:13 »
simply unplug the MAF when engine not working.. .. and try the same acceleration..if car does not hesitate still you have problem with MAF..
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NiallyV6CDX

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Re: fuel / air?
« Reply #5 on: 23 September 2009, 23:10:04 »
Fuel filter is supposed to be done every 40k/4 years.
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NiallyV6CDX

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Re: fuel / air?
« Reply #6 on: 23 September 2009, 23:11:00 »
Quote
simply unplug the MAF when engine not working.. .. and try the same acceleration..if car does not hesitate still you have problem with MAF..

Would that actually work, I would have thought the engine would go in to safe mode?
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cem_devecioglu

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Re: fuel / air?
« Reply #7 on: 23 September 2009, 23:16:54 »
Quote
Quote
simply unplug the MAF when engine not working.. .. and try the same acceleration..if car does not hesitate still you have problem with MAF..

Would that actually work, I would have thought the engine would go in to safe mode?

will work (if MAF is fubar).. the engine will use standard map and ratios ..
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footloose

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Re: fuel / air?
« Reply #8 on: 24 September 2009, 18:39:12 »
I'll try that. :y
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