harald_fuchs2

XTrail Diesel Boost Pressure Issue

I have a 2012 Nissan XTrail diesel with 39135 km. I've noticed a performance decrease, suspecting a boost pressure issue. The check engine light is on intermittently, engine power is reduced, throttle response is diminished, it occasionally stalls at idle, fuel consumption is up, there's a whistling noise from the engine bay, and a hissing sound during acceleration. I suspect a wastegate valve defect. Has anyone else had this?

A 2012 Nissan XTrail diesel experienced performance issues, including reduced engine power, diminished throttle response, intermittent check engine light, increased fuel consumption, and unusual noises, suggesting a boost pressure problem. The suspected cause was a defect in the wastegate valve. Suggestions included checking for intercooler piping leaks and cleaning the MAP sensor. Ultimately, a technician confirmed the wastegate valve defect, and after repair, the vehicle's performance returned to normal.

Did this summary help you solve your problem?

4 comment(s)

Hey, I have an XTrail too. Your issues sound familiar to what I went through. Check engine light, power loss, the whole shebang. Did you check the intercooler piping for leaks? The whistling and hissing makes me think it could be that. Also, have you tried cleaning the MAP sensor? It's a pretty easy DIY and sometimes a dirty sensor can cause all sorts of weird boost issues. Just a thought!

Thanks. Could you explain where the intercooler piping is and how to check it for leaks? Also, how do I clean the MAP sensor, and what cleaning agents or tools do I need?

Okay, so the intercooler piping usually runs from the turbo to the intercooler and then to the intake manifold. Just visually check for cracks or loose connections. Feel around for air escaping when the engine's running (careful of hot parts!). For the MAP sensor, it's usually located on the intake manifold. You can find tutorials online, but basically, you remove it, spray it with MAF sensor cleaner (important to use the right stuff!), let it dry, and reinstall. Honestly, though, with all those symptoms, especially the stalling, it might be more than just a sensor or a simple leak. I'd seriously consider getting it checked out by a mechanic. Could be a more serious wastegate issue like you suspect.

Thanks for the advice. I consulted a technician, who confirmed a defect in the wastegate valve. The repair was 860€. The vehicle is now working well. Your insights helped speed up the diagnosis and prevent further damage. Thanks again.

rmh_community_comment_box_header

community_crosslink_scanner_headline

community_crosslink_scanner_intro

community_crosslink_scanner_title

community_crosslink_scanner_price

community_crosslink_rmh_headline

community_crosslink_rmh_intro

community_crosslink_rmh_title

community_crosslink_rmh_subtitle

community_crosslink_rmh_brand

NISSAN

community_crosslink_rmh_model

XTRAIL