A
AJ4
Guest
I can't say for them or against really ( I dont have one, but I have replaced a few earths myself ).
As Ed pointed out, mostly its all sorted quite well with the ecu on our cars, but there are one or two 'weird' ones that could possibly cause problems. On mine there is an earth lead coming out the TPS harness which is earthed locally and also one on the AFM. These are for the screening on the cables though, not the actual 'earths'. If any of them go then you'll get pick up from everything in the engine bay so its worth making sure they are ok. And the 'main' grounds from chassis to engine etc need to be perfect as mentioned above.
I can't say I'd go out and pay £100 for a fancy pants earthing kit, but like Jim I understand the concept and measure and replace if necessary.
As Ed pointed out, mostly its all sorted quite well with the ecu on our cars, but there are one or two 'weird' ones that could possibly cause problems. On mine there is an earth lead coming out the TPS harness which is earthed locally and also one on the AFM. These are for the screening on the cables though, not the actual 'earths'. If any of them go then you'll get pick up from everything in the engine bay so its worth making sure they are ok. And the 'main' grounds from chassis to engine etc need to be perfect as mentioned above.
I can't say I'd go out and pay £100 for a fancy pants earthing kit, but like Jim I understand the concept and measure and replace if necessary.