You mean the intake air temp sensor? It’s part of the MAF circuitry, the Accord diesel doesn’t have a separate IAT like some older cars. If you mean the MAP sensor then that’s on the intake manifold near the boost pipe coupling.
Can’t help you in Scotland, but if you want a proper quality job then it’s worth making the trip down to Leeds. Drop me a line for further information.
Sounds like an electrical issue to me. If it was fuel or air intake related there would probably be some sort of a symptom like a miss or hesitation, and also likely a diagnostic trouble code. A sudden loss of engine communication and input controls such as throttle would suggest a momentary...
It would look something like this
https://www.ebay.co.uk/itm/395754366606?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=5R9_gnxhQ4m&sssrc=4429486&ssuid=f3nnn2MXTQK&var=&widget_ver=artemis&media=COPY
They’ve been talking about this for nearly 10 years, it’s nothing new really. And yes restoring a dpf is a case of fitting a replacement and having the software flashed back to factory stock, and some adaptations carried out.
I missed the bit about lack of adjuster, in which case agreed you probably have xenons. If it’s a pre facelift exec however I’m pretty sure they all had washers. Easiest way to check, just lift your bonnet and look at the rear of the headlight. If you can see a ballast then it’s xenon.
Only the Pre facelift 2.4 Exec came with factory xenon’s in the 7th gen, and only the Type S 180 has them in the 8th gen. The JDM Euro R also has them. Safe to say yours will be halogen whichever generation it is.
It’s not very common but it can happen, seen it on various diesel engines. Are the threads in the head strong enough to hold the new bolt in? Sometimes you need to tap a new thread in or oversize drill and helicoil.
Before throwing all these parts at it, probably wise to let an auto electrician check it over or if you’re fairly competent, run some basic continuity tests. It’s quite possibly a wiring break somewhere.
What’s the actual error code?