Thread: TD5 running on 4 cylinders

Change the spark plugs

Originally Posted by JoshV12345

Hey,

My 2000 130 TD5 has developed a miss, this occurs at all times i.e. when idling, revving freely and when accelerating. My first thought was injector harness, but...I've checked the plug and the ecu end, no oil present at all, cleaned both and problem still occurring. Can the injector harness cause this even when there is no oil present? Car has done 73000ks and I assume it's the original harness. When the problem started, the motor was cold, it started fine on 5 cylinders then after a minute of idling dropped to 4. Turned car off, and restarted, problem went away and was fine for about 30ks, then started again while driving. Car still drove and accelerated, just down on power obviously. Left it overnight and it did the same thing, started fine then started missing. Anyone have any ideas?

Cheers, Josh

Check the cylinder balance with a Nanocom or equivalent this would be a starting point anyway.
Could be a broken wire in the harness, faulty injector or low compression on one cylinder

Thanks for the reply, yeah I thought that would be the case, I don't have one so will have to take to the landy place to get checked out. I just thought it was weird the car was running great since I bought it (10000ks ago) and the motor seemed fine. Hopefully it's something easy to fix...do injectors just fail like that?

Would doubt it but I guess it could happen
I would bet its wiring myself

Be careful with a main dealer they may diagnose and start charging new price for injectors in an attempt to fix it a good independent may be appropriate