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Anti pollution light comes on once car has been driven for twenty mins or so

\015 Sometimes the engine light will come on then check fuel filter (which i have changed)the car runs uneven, after driving 20 mins anti pollution light comes on , however there is no problems or are very small in warm to hot weather\015 Posted / edited by AnonymousUser on : 15-01-2018

Answers :

I had a problem with "Unblock diesel filter and Anti-pollution fault". After reading a few answers for this I decided to take car into the mountains for a good workout. Usually my trips are short and often therefore the exhaust was not getting hot enough to burn off the diesel residue in the Particle filter. In 40 mins of 3,5000 revs mainly in 3rd gear nothing showed up on the computer. Think this problem is sometimes caused by the engine not getting hot enough for long enough.
When the light goes on, keep the car running while you go to an Autozone, Advance, or Oreillys autoparts store for a FREE scan. The anti pollution system is different from the fuel system and easily can cause your symptoms
\015\012Obtain the Code number and you can decode it at the store or check online. Usually the fuel filter, if monitored at all, would only reflect a pressure variance from normal in the fuel system. This is not a pollution part.

Most likely someone guessed that the uneven running was due to a fuel filter. In a short time, this had no effect in removing the pollution light.
It did not hurt to change the filter, it just did not solve the problem.

Get the scan while the light is on. You are ahead of things by doing this because many things are not monitored by this system and you can start by fixing the things the warning light tells you about. It may fix everything by doing this. Only after the parts recommended are changed AND the warning light is cleared off the computer will you have to troubleshoot anything that was missed.

I hope my solution is helpful.
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