Chevrolet Cruze Forums banner
1 - 3 of 3 Posts

·
Registered
Joined
·
27 Posts
Discussion Starter · #1 ·
I've been hard at work fixing the 2.0L Turbo Diesel Cruze which has recently been suffering from poor performance all accross the shop, poor fuel economy, low power and torque, rough idling, stalling etc... The list goes on.

First things first, done a full service on it which yielded... Results that were not satisfactory :p.

Next thing I done was suspect the DPF being blocked, being almost 300,000 KM's on it, so took the entire exhaust off up to the turbo and took it for a drive, she went well however results were inconclusive as that was to be expected, however I cleaned out the DPF and Cat with an acetylene torch and compressed air, this yielded measurable results.

How ever poor all round performance was still there, examination of the EGR system revealed nothing, relatively clean however silly me didn't check the heat exchanger so... Who knows?!

Anywhoooooo, onto the sensors, the MAF sensor was clean but I cleaned it up anyway, this on it's own yielded no results at all.

Onto the MAP Sensor, this was impressive!

https://i.imgur.com/r3mh5V2.jpg

https://i.imgur.com/r3VH2Ew.jpg

https://i.imgur.com/ktbLSdy.jpg

Even with the amount of pressure inside the intake manifold... I highly doubt this was getting a reading at all, cleaning this sensor sorted out a lot of the problems, the throttle body was in considerably worse condition and was promptly cleaned and degreased.

Next up is an acid bath for the intake manifold and maybe some sea foam.

https://i.imgur.com/2FeNqhi.jpg

This is only a fraction of the damage emissions controls does to vehicles.

I will be deleting the EGR and installing a catch can in the very near future, upon cleaning the sensors etc.. The car is running full power now and I'm ashamed to say, I've been missing out on the fun with all that crap choking the car to death.

Anyway, wasn't sure where to put this as I'm not sure what gen my Cruze is or anything.

Clean your sensors fellas.
 

·
Registered
Joined
·
991 Posts
If it's a JG, like mine, then it's a Gen0 Cruze. Built in Korea with the 110 kW/320 Nm engine. Manual is 5 slots, slushie is 6 but not well mated to the engine.
If it's a JH, then call it a Gen0.5. Built in Oz with the 120 kW / 360 Nm engine. Manual has 6 slots, slushie is 6 and very well mated to the engine..

Very little of what the USAians and Canucks talk about with their diesels apply to ours, completely different engines, and completely different programming in the BCMs.


I might pull the MAP out of mine and give it a clean, but if you put SeaFoam through it be prepared to get a new engine, that sort of old-style maintenance really, really f***s up modern diesel technology.
 

·
Registered
Joined
·
27 Posts
Discussion Starter · #3 ·
Yep, CD JG.

My MAP was absolutely disgusting. I ran some Diesel decarbing agent through the intake at around 2200~2300 RPM, results not recorded yet.
 
1 - 3 of 3 Posts
Top