So here's the latest in a number of dramas with my 93 ttid. (front and rear springs decided to snap a couple of weeks ago).
Easter weekend drove from London to leeds to Birmingham and back to london. On the last leg of journey the lovely Limited Performance sign pops up and into limp mode we go. Luckily could get up to 60/70 mph so got ourselves and little one home.
Checked car, tail pipes covered in soot. All else fine, no other check engine light etc. Over the course of the week limited performance came and went randomly. Hmmm. EGR got a good clean, hoses checked for leaks, maf and map cleaned. LP still came and went.
So thought maybe dpf. In the 6 months I've had the car I've never had to clean the tail pipe of soot. They've been squeaky clean. For them to now be covered in soot made me think there were some serious issues.
Nice day today so cracked open tool box and pulled dpf rear pipe to see what was going down. Low and behold the dpf has self destructed. The centre of the ceramic core was crumbling apart and partially melted. I can only hypothesise but regen caused over heating maybe as the core was fully blocked? There was no crappy additive in the diesel so can't think why, maybe someone on the forum can shed some light.
Anyway with nothing to lose I pulled out a hard core masonry drill bit and chisels went about breaking down what I could of this pile of junk. Might as well let the engine breath. Managed to get 4 holes about 75 percent of the way through at 12, 3,6 and 9 o'clock. Chiseled away what I could of the rear of the ceramic as this was crumbling anyway.
Turned engine over and blew out all the crap and ash. Battery unplugged and ecu reset. I'm about to take her for a spin and see how she goes.
BTW this was done with DPF still attached at the front end. Its an easy job. 1 clamp bolt and 2 for the bracket that support the dpf. Then wiggle out.
Will post back with an update later...