So i was having a lot of problems with my 8, took it to the dealer he said i needed a load of stuff doing.
I got

New spark plugs
BHR Engine coils
New fuel pump
New motor mounts

it was running fine for about a month then the check engine light came on again, so i got

new oxygen sensor

then got it back and now the check engine light keeps coming on for a few days, goes off for a few hours then comes back on. Now i have started having a new problem, my car is almost stalling when im in first. Its not my driving. I stalled four times today and i never do. I was just pulling out my complex and the car was warm and i was in first at 10mph and it stuttered as if i let go off the gas when i didnt.

I feel like ive had non stop problems with this these past few months and im at 95000 miles. So i just thought id ask here before i take it to the dealer, hoping someone has an idea.

 

When you had it at the dealer the last time did they do a compression test? Does it start fine or does this only occur when it is hot? Stalling can be a sign of low compression and a failing motor. It could also be something as simple as a vacuum leak from any number of places.

I got my third engine from Mazda at 96,000 miles

 

well thats good to hear. It seems only when its hot. Last time they didnt do a compression test because they said they couldnt do it because i needed the new engine coils etc first

 

Get a compression test before your warranty runs out.

 

Just make sure you tell them it is down on power and stalling. If they give you **** about the BHR coils, email CRH at charles@blackhaloracing.com. Plenty of people have gotten engine replacements with the BHR kit. Just make sure the reinstall it properly and do not damage it if they do give you a replacement.

 

I'm getting these codes

0139 o2 sensor which i already replaced
0410
0172 too rich

i did some searches and saw that the above two might be fuel pump related. Im going to see if i can get a compression test this weekend.