Hi,
About 18 months ago, my local Mazda dealer replaced my smoking turbo under warranty. All good.
However, last week whilst looking under the car I noticed that the bracket holding the OEM dump pipe was missing and one of the bolts where the bracket attaches to was snapped.
I approached my local Mazda dealer who replaced the turbo about the missing bracket. They said they would install the bracket at no cost since they snapped the bolt and didn't put it back. All good.
The dealer had my car for nearly 2 days because they had to remove the DP and drill out the snapped bolt. They also replaced a split boot on my left side axle.
After I got my car back, I knew straight away something just wasn't right.
The car idles very rough, after it cools down for half an hour or more, it is very difficult to start.
Also my boost guage use to read about 18 in-hg when idling. Now it sits around 14 and if turn on the A/C or turn the steering wheel whilst idling it jumps up to 10.
I took it back to the dealer and told them all this and after having my car for another day came back and said they could not find any problem (suprise, surprise).
Just opening the bonnet and listening to the car idling, you would know something is not right.
Originally I thought it was a vacuum hose, but i have checked everything and found no problems.
I pulled out the plugs and checked them as well.
I must add the car still goes great when I WOT, just doesn't like idling and starting.
I'm now thinking maybe the dealer has damaged an O2 sensor when removing the DP.
Could it be the EGR ??
Any thoughts/ideas would be greatly appreciated
Cheers