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Matt, Mechanical Engineer
Category: Car
Satisfied Customers: 21608
Experience:  BEng hons Mech engineering, in auto industry 22 years
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Mike, my 2005 Vivaro was running nicely the revs started pulsing couple of minute

Resolved Question:

Hi Mike, my 2005 Vivaro was running nicely the revs started pulsing for a couple of minutes then cut out. The AA came out & put there test equipment on & it read code P0193 rail pressure sensor faulty. I have replaced this & the van still won't start, I called out an mobile mechanic who said it could be the cam sensor or flywheel sensor, so have replaced these & the van still won't start, so now we think it has to be fuel pump problem has there is no fuel going into the fuel rail?
Regards ***** *****
Submitted: 1 year ago.
Category: Car
Expert:  Matt replied 1 year ago.
Hello If you haven't already then its 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.It may have developed an air leak on the fuel supply pipe from the tank to the engine. The engine has no separate lift pump and relies on the built in one in the injection pump. If a leak has developed on the fuel suction pipe then air entering the system will air lock the pump.Try pumping up the fuel using the hand pump in the engine bay on the filter housing, then crack off / loosen each injector pipe in turn while cranking the engine and getting an assistant to operate the primer. This will expel air from the injection side and the engine should fire up. The problem will be cured by checking the supply pipe along its length for signs of leakage and repairing any you find.If you daub each pipe joint with heavy grease and the issue goes away then wipe the grease away one at a time to highlight the problem joint
Expert:  Matt replied 1 year ago.
Hido you still need help?Bear in mind that the site takes a deposit from you at the beginning and this is held by the site until you rate my answer at which point the cash is split between the site and the expert. I am only paid for my work on this question if you rate my answer, using the star system at the top of the screen. Please do not forget! Thank you
Customer: replied 1 year ago.
Hi Matt, we are pretty certain its the fuel pump, there's fuel coming out of the return outlet but not the outlet to the fuel rail.
How easy is it to change the pump or does it need to go to a garage?
Regards Adrian
Expert:  Matt replied 1 year ago.
hello Adrian the main issue is the cam belt has to come off too ( I'm assuming that this is the 1.9Cdti engine)so its not a major drama providing you are confident in performing this taskin you can confirm the engine type I'll provide the cam timing details
Customer: replied 1 year ago.
Hi Matt,
Yes it is the 1.9Ctdi engine.
Expert:  Matt replied 1 year ago.
ok cam timing details attached
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