Help with odd turbo / carb issue

aki048 · Post by **aki048** » 12 Jun 2018, 13:13

Hey Guys,
Just joined today.
I was hoping someone could give me a clue about for my volvo beef.
I have a 2.4t manual that was driving well albeit a bit sluggish.... it started to really struggle to pick up revs at slow speed and other times it picks up well and goes.
I changed the air filter and plugs and all seemed well, no bad oily plugs or anything. Anyway still the problem comes and goes..
Just ordered a MAF sensor, couldn't find any air leaks, but the message has just appeared to " service emissions system. could this be the carb collection box and would it make the car behave as it does?
cheers Guys, hope you can help.
matt

Post by **bmdubya1198** » 12 Jun 2018, 15:47

Welcome to the forum!

Do you have an OBD2 codes?

The MAF sounds like a possibility here, but it may be a good idea to check the TCV. It sounds like this is probably a boost-related issue.

Post by **SuperHerman** » 12 Jun 2018, 19:53

I think you have two issues - one the check engine light and then the performance problem.

For the engine light - if it is new - check your gas cap.

aki048 · Post by **aki048** » 14 Jun 2018, 15:02

bmdubya1198 wrote: 12 Jun 2018, 15:47 Welcome to the forum!

Do you have an OBD2 codes?

The MAF sounds like a possibility here, but it may be a good idea to check the TCV. It sounds like this is probably a boost-related issue.

Hey mate cheers
no codes as yet... the guy at the garage cleared them all... Will try and get one when my plug in arrives.

sorry. newbie question.... what is a TCV??
ta
matt

Post by **bmdubya1198** » 14 Jun 2018, 17:54

The TCV is the turbo control valve, it's a small black solenoid with 3 hoses coming off of it. It's located near the air box.
This is what it looks like: https://www.fcpeuro.com/products/volvo- ... e-30670448