So had the GT a while now and it's been running like a beaut.
However, took her out the other morning after she'd been sitting for about 24 hours (normally only left for 10 hours/12 tops, so dont know if this may be the cause...) and when I went to pull away, nothing. So i put my foot down. Nothing? By this time, I had pulled out onto a thru road, and sitting at 20mph in 2nd gear I should have been flying.
It wasn't until I (very slowly) managed to get to +5k revs that she came to life. And then after no issues.
So that was a few days ago, ran fine for 2 days, and the past 2 days I have had the issue again.
It always sluggishness from low RPM to 5K, but once I hit 5k the first time and after running for a mile you wouldn't know any different. I did notice today however (after being advised to drive less economically and see if it helps, noting it could be a messy carbon filter from eco driving) that after being fine, stuck in Christmas traffic the problem came back. When I footed it, it slightly kangerooed from 2K-4K (like micro bursts of power), then the boost kicked in and i nearly hit the back of the car in front of me.
Plugged into the ECU this afternoon (in the rain
) and no fault codes. Left it reading and drove around, everything seems to OK, injectors/air intake/fuel filter/pressure/ECG all seem to have correct readings, and where appropriate match the expected/target reading from the ECU.
There doesn't appear to be any air blowing, and I'm in doubt that its a cracked pipe/hose as it's too intermittent. Doesn't always happen either, this afternoon i drove for 10 miles conservatively with no issues.
Could this be a MAF sensor or similar issue? Has anyone else had/seen a similar issue?
Worth nothing, its a 57 plate and 500miles from the 72k. Could it just be in need of its service, old/deteriorated fuel filter?