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350matt
350matt, Engineer
Category: Peugeot
Satisfied Customers: 20617
Experience:  Mechanical Engineer BEng Hons 22 years experience in car engine industry, 10 years in formula 1
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My car had problem won't start. Anit-pollution system

Customer Question

Hi. My car had problem won't start. Anit-pollution system faulty?
Submitted: 9 months ago.
Category: Peugeot
Expert:  350matt replied 9 months ago.

Hello

ideally you woudl get a diagnostic device plugged into the car to read off the fault codes and so highlight the fault

1st check the connections to the crankshaft sensor, unplug it and check for corroded contacts and broken wiring, and consider fitting a new sensor - do the same for the cam position sensor

If the EGR valve is stuck open then this too can effect starting so try disconnecting it to see if this helps or changes anything

Could also be an injector leaking fuel back through the overspill pipe, so not getting enough fuel pressure to tell ECU to fire the injectors, this is trickier to find and you’ll need the garage to do a ‘run back’ test to identify which one is the issue

Lastly it’s also worth considering fitting a new fuel filter as if only slightly blocked this can lower fuel supply pressure and choke the main pump, the pump will be more sensitive to this when its cold as diesel thickens considerably with low temperatures.

Expert:  350matt replied 9 months ago.

Hi

do you still need help?

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