Can anyone provide me with a quick sketch or diagram as to where the ground to frame wires are located? Found battery to engine block (seems OK). Found rear cat flange to frame (broken).

I ask because sometimes engine starts, sometimes requires several twists of the key to starter position, then after a few tries, starts right up, but runs like crap (multiple engine misfire code, severe loss of power)
Systematically eliminating possible culprits - pulled rear cat, cleaned out some debris, ran Cataclean through it, replaced fuel pump and fuel filter - next is ground to frame wires. Once I make sure ground is good, next will be ignition coils and fuel injectors.

 

Go to Nico club forums and get the factory service manual.

 

try running a jumper cable directly from your batterie's negative terminal to a good clean metal spot on your engine to see if a better ground solves the issue.

these wires in the pic below are a ground for the engine harness and I believe the ECU, try cleaning it for better contact..






I tossed my factory ground cable years ago but I remember there being a tranny ground ( 6 speed ) and I think the other one went behind the air filter like in the pic below. I can't remember any other grounds under the hood.



I'm running a ground wire to to the driver side supper strut mount nut where I got it down to bare metal and another to the transmission. I might add another ground to passenger side supper strut mount location to one of the 3 VIAS bolts on the intake manifold but using a stud and 2 nuts.



you having cranking issues or issues with the engine running?

 

I found and cleaned all the grounds under the hood. I tested across every ground with a meter. Found the trans ground wire broke, so fixed that. All grounds are good (except the braided one from the rear cat to the body, which is missing, but I would suspect just to reduce rusting of the exhaust system)

Starter will engage every time now. I suspect that since it hasn't been used for 8 months that the starter solenoid contacts were a bit dusty. We have allot of very fine dust everywhere up here in dry CO

Thanks for everybody's help!
Jumping over to my other post...severe loss of power, with code 0300 random multiple misfire