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Ask Matt Your Own Question

Matt, Mechanical Engineer
Category: Renault
Satisfied Customers: 20358
Experience:  BEng hons Mech engineering, in auto industry 22 years
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Customer Question

Submitted: 4 months ago.
Category: Renault
Customer: replied 4 months ago.
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Customer: replied 4 months ago.
Reeve email trap a details not on cash staydo
Expert:  Matt replied 4 months ago.


if you keep getting a 'engine stop' message then the best route is to plug a scan tool into the car to read off the stored fault code and so point to the issue

if you can tell me what engine size and fuel type this is and how the car drives with the issue then I can try to help further

Customer: replied 4 months ago.
GT ft thy UB in
Customer: replied 4 months ago.
Rreg Renault espace2.2diesell nead your telephone number?
Expert:  Matt replied 4 months ago.


OK as its a diesel I'd suggest to 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.

Expert:  Matt replied 4 months ago.


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