Hi,
I have an issue with my BA XR6 Turbo that only seems to happen during a hot day, specifically once last year on a 36-degree day, and once a few weeks back, on a 33–34-degree day.
After about 45minutes to an hour of driving (with the aircon on) the car starts to hesitate and when I put my foot down, the revs won't go high and starts really struggling.
At low speeds, the car really struggles and will stall (with the aircon off).
I can start the car again, but in a minute, or less it'll start idling rough, spluttering and then stall. If I drive, I have barely any power and can only really crawl, the car really hesitates, revs won't go high and stay low, and the car staggers before stalling again.
There'll also be strong smell of fumes after this.
The strange thing is, after left for a while, the car starts and drives fine, with no issues at all.
The first time, I had my car towed home, but was able to drive the car back into my garage fine, and the next day, I drove it for 45 minutes with no issue.
The second time it happened a few weeks ago, I barely made it to a job, and when I finished the job 9 hours later, it was 1:30am obviously wasn't as warm, and was able to drive home an hour away with no issues.
RACV couldn't find any issues, and the mechanics I take my car to couldn't find any issue, mentioning they tested the spark plugs, coil pack, battery, alternator and they're all fine.
There was a lean code present on there, which they cleared, but that was all.
They mentioned that turbo cars can do this in hot weather, though this has only happened since last year, and I've had the car for over a decade.
Has anyone experienced this, or heard of this, and can provide some insight on what it might be, and what I should change to remediate it?
I don't like the idea that my car can do this again on the next hot day I go driving.
Thank you in advance.