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Anti pollution fault

I have problems starting the car....but will usually start when hasnt been used for a while..iv had new battery, timing done,crankshaft sensor, mpg sensor.....im at my ends wit with it!! when it goes its like a rocket like nothings wrong with it....but after 10mins being left after driven the whole engine moves and it back fires if i try and give it gas while starting but does eventually start!!

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  • 161 Answers

Could be the camshaft position sensor. It works with the crankshaft sensor to set timing. You can remove it and clean off the flat tip. I have seen metal filings on them that causes timing problems.

Posted on Jan 02, 2014

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Posted on Jan 02, 2017

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ginko
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SOURCE: BMW X5 2000 problem

There can be many causes for the car not starting. Generally it is usually a fuel or a distribution problem. Many fuel problems of this kind are related to electronic injection and ECU. This kind of troubles often need special equipment, and can be fixed only at a well equipped garage, where they can test fuel flow pressure and volume in monitoring ECU feedback at the same time.
Simple things you can do are
Checking and eventually replacing fuel filter.
Checking and eventually replacing air filter.
Check that there is no oil on top of new spark plugs.
In last case try to listen if car is running on three cylinders, this can leave uncombusted oil on cylinder, and mean there are troubles with distribution or camshaft.
It is useless replacing one of the sensors without testing them, and when a sensor is gone you usually get some additional light on your instrument panel. At a garage they will connect straight to the computer and get an error message in return, in case one of the sensors is bad.

Posted on Jul 23, 2008

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SOURCE: Car won't start/fire up

Check all the grounds sounds like what i had on my truck. It took a good mechanic to find it but it ran after.

Posted on Feb 10, 2009

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SOURCE: 2000 2.0 vw shutt down after running 20 min

Replace the fuel pump relay, it's easy and cheap.

Posted on Jun 08, 2009

co7196
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SOURCE: Audi A6 Starting problem

Try starting without touching gas pedal

Posted on Oct 04, 2009

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SOURCE: my car says 'anti pollution fault' when I start it

If you drive your car more likely for short distances then engine will not get hot enough to start the regenerating process to clean the cloged particulate filter resulting in a antipollution fault.

Drive your car to a motorway or empty dual carriage way (best in nights). The temperature meter should be showing above 60°C when you begin with this process. Place 3rd gear and drive your car at 3000-3500 rev /min for 15 to 20 minutes to let the ecu to kick the regeneration process. Keep driving car for 15 minutes in this state will be enough to clean your catalytic converter and your problem will be solved. But if it doesn't then the problem is with your catalytic converter and more probabily you need to change it.

Posted on Feb 10, 2010

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It's not unusual for 207s to show the anti-pollution warning randomly. In my experience it isn't significant and you just learn to live with it, but as yours is consistently showing at start up accompanied with the engine management light, it maybe something more serious. If the car appears to be driving okay, then I would be inclined to ignore it, if not, you will have to have a Puegeot dealer put it on their computer diagnostic machine - pricey !

207s have a bad reputation for random fault indications as a whole (Google it), some of which seem to be ambient temperature related - my father's 207 randomly shows the air bag light on very hot days but this goes away after a few start/stop cycles and a drop in temperatures. Fortunately, his MOT is due in March so when it goes for an MOT the light is always off - air bag fault indication showing is now an MOT failure.
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Just tried to start my 2007 307 1.6 s all it does is click and then the anti pollution light comes on and says air bags s/belts faulty?


If all you hear is clicking, then the starter's not getting enough power from the battery...

This problem could be a weak battery, faulty wiring (I've even encountered squirrels eating the wires!), but the most likely culprit is usually a weak or bad (dirty) connection between the battery clamps & battery posts. They need to be clean (both the clamps & the posts) and also need to be tight on both ends.

After servicing these, I'd recommend using an anti-corrosive product. (there are numerous methods & products)

A good solid connection may also fix your other problems.

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A fault in the ignition can cause an engine misfire and unburnt fuel gets into the exhaust causing the anti-pollution light to be triggered.

Check the ignition system for signs of damp or loose connections.------- I suggest get the car scanned at autozone service center.Its absolutely free to get car scanned.This will show the problem if you receive the error code.-------- Thanks.Helpmech.

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