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I was researching a fault with my vectra diesel, seeing if

Customer Question
Customer: i was researching a...
Customer: i was researching a fault with my vectra diesel , seeing if anyone reported same issue
JA: Thanks. Can you give me any more details about your issue?
Customer: when i start car diesel it goes to 1000 rpm but if i try and pull away it stalkls. if i put my foot on accerletor the rev coiunter climbs very slwoly, takes about 60 sec to go from 1000 rpm to 2500rpm and then the car seems to be okay
JA: OK got it. Last thing — JustAnswer charges a fee (generally around $30) to post your type of question to UK Car Experts (you only pay if satisfied). There are a couple customers ahead of you. Are you willing to wait a bit?
Customer: its a 2004 model so old but apart from this its served me well and im hoping its nothing too serious
JA: OK. Now I'm going to take you to a page to place a secure deposit with JustAnswer. Don't worry, this chat is saved. After that, we will finish helping you.
Submitted: 2 years ago.Category: UK Car
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Answered in 13 hours by:
1/10/2016
UK Auto Mechanic: Matt, Mechanical Engineer replied 2 years ago
Matt
Matt, Mechanical Engineer
Category: UK Car
Satisfied Customers: 22,455
Experience: BEng hons Mech engineering, in auto industry 22 years
Verified

Hello

I'd 1st consider changing the fuel filter as if this partially blocked this will reduce pressure at the main pump

If OK then also check the connections to the EGR valve, if either the vacuum pipe of electrical connection are damaged / corroded then the EGR can be on all time which certainly will hurt performance. Its also possible that its a fault with the EGR valve so its worth removing the valve and cleaning it out with brake cleaner, if it looks particularly clogged then replace it.

If this is OK then check the small vacuum lines to the turbo and its connected control solenoid on the bulkhead, any cracks or leaks can give turbo issues and its best to have the boost pressure measured actually measured with a boost gauge to check that the turbo is healthy and that the sensor is reading correctly

If its a variable vane turbo (they’ll be an actuator on the turbo body - but not a wastegate) then check its vacuum pipework as above and check the connections to the diaphragm / solenoid valve

Also worth checking that the glow-plug relay is switching off as they can stick on and leave the glow plugs also on - on some cars this can force it into limp home

Also worth considering adding a bottle of injector cleaner into the tank as a clogged injector nozzle will reduce power and give poor combustion - the next stage on from this is to remove all the injectors and have them ultrasonically cleaned and flow checked

Also check all the high pressure hoses post turbo/s for any split hoses or cracked metal pipes, also check the ends of the intercooler as its not unheard of to pop the end caps off under high boost.

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UK Auto Mechanic: Matt, Mechanical Engineer replied 2 years ago

Hi

do you still need help?

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Category: UK Car
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