Car has no issues starting but was a bit sluggish last winter - it's in for service next week so figured I'd run a scan and I got codes 5658, 5659, 5660 and 5661 which if I'm not mistaken are glow plug faults on all four cylinders.

 

No MIL at all and the glow plug light comes on and off same as usual.

 

I'll check them with a multimeter but is it usual for all 4 to go together?

Cheers Mike,

 

Got the multimeter out today though and checked them all.  I 'think' they should be about 1 to 3 Ohms each.  I got 61 Ohms, Infinite (open circuit), 35 Ohms and 5 Ohms...   so I think they are actually all shot.

 

I did try to test for 12v at the each harness connector but it was warm today and I think they are pulsed so no joy there.

 

I'll keep an eye out for a harness though (that one in your link is different as mines a 140 BMM, not a 170 BMN, so I need one simlar to the 1.9 by the looks of thngs.

They won't have all failed at once, but left thousands of miles they will of all failed one by one.

 

Unplug the coolant temp sensor, this will make the glow plugs stay on for their maximum duration to enable you to test the harness.

Edited 2 October, 20169 yr by SuperbTWM

They won't have all failed at once, but left thousands of miles they will of all failed one by one.

 

Unplug the coolant temp sensor, this will make the glow plugs stay on for their maximum duration to enable you to test the harness.

Fair point... Just checked back and have a note in the file from years ago about one of the plugs showing as a fail on a scan that I'd completely forgotten about! Having said that I don't recall it showing all four bad until recently but then again old age may be creeping up on me as my wife has also reminded me that she told me a few times last winter that it would often take a couple of tries to start, although I don't recall that myself.

So it's probable that they have just failed over a period of time.

For the sake of £50 or so I'll get them changed at the service, check for codes again and if they still show up do the harness

They do get neglected and it does help the car a lot post starting in cold conditions.

 

I think they should be on the service schedule to be checked every couple of years and replace if necessary but I suppose if you took it for a main dealer service they would notice the fault codes anyway.

Edited 3 October, 20169 yr by SuperbTWM

final update on this - got all four replaced at service - cleared the codes and, thus far, they've not come back...

 

I've also been advised that the limit for them is in the region of 7 Ohms.