V6 stalling in traffic

[Vincey]

Hi
I have a v6 bongo that starts and drives perfectly.. long journeys are no problem.. but I recently drove 70 miles with no problem , but then I ended up.in slow moving traffic.. it cut out and would not start. After 20 minutes it started.. drove 200 yards and cut out at the next junction.. this continued with 20 minute cool down periods until I got home.. cutting out at every junction.. I could keep it running sometimes by knocking it into neutral and keeping the revs up.. no eml . So didnt look for blink codes.. It started the next day and ran no problems..until it got warm and in slow moving traffic.. fitted a new coil, and crank sensor and ignition amplifier.. seemed ok for a month.. then just before xmas I went away for a week 70 ish miles away..drove there no probs.. on the way back we ended up in slow moving traffic . It all happened again.. after investigating further, i found the eml bulb had been removed.. i checked the blink codes . 1.1 1.3 1.4 and 1.5.. which i translate to crank sensor.. which is new.. but its pointing to the new one being faulty... any suggestions welcomed greatly..

[Vincey]

Any ideas ?

[g8dhe]

Well its not unknown for new devices to be faulty/damaged during insertion, have you checked that the wiring looks OK, won't be the first time if the plug hasn't been connected to the loom either Maybe disconnect it and see if the fault code changes, then plug it back in and see what happens, it may cure it, if not then it suggests that it might be faulty.

[Vincey]

Thanks Geoff..
I made a mistake reading the codes.. tired and other excuses..
Its reading as
10----air intake thermosensor
12----throttle position sensor
15---- oxygen sensor RH

[g8dhe]

Well I'm not a mechanic, so would suspect that there maybe a problem with the air intake perhaps, could something be blocking the inlet or maybe an air pipe come loose further along the system, maybe the inlet pipe has got some water in it as it dips down under the firewall if you have driven thru any water recently given the weather! But I would start at the air intake (to the offside of the radiators) and follow it along perhaps ?
See https://www.lushprojects.com/bongoparts ... mgno=.html for air inlet and filters ..

[Hazzobongo]

I was having some trouble with the engine revs surging and suspected the TPS was causing the problem so removed it cleaned the electrical connector up, checked the rotor part for sticking/smoothness and put it back together but while doing that I noticed a vacuum pipe had been pushed on its fitting without the clip and it was basically just attached so I put it back as it should be and then also noticed the CPS electrical connector was loose too so cleaned that with WD and a dab of vaseline and pushed it back into place and the van is now back to normal.

So take your pick out of those three while you're having a look at the motor, theres lots of little things can give problems or throw up codes pointing to more expensive items supposedly causing those problems so its best to check all round that whats connected is done right and not leading you down the wrong road.

The only work I've had done was the timing belt when I first got the van, I suspect this was when those two connections were not plugged back in correctly and its taken them 3 years to come back to bite me. It also cost me transmission oil as that was my initial thoughts on it dropping down gears so I've done that too.