FZJ80 EFI wiring problems?

[kai38]

Is there a common problem on the FZJ80s with the EFI wiring harness? If so is there a link to the problem and the fix?
Thanks, Kirk

 

[cruiserman]

The wiring loom rubs at the EGR and sometimes behind the firewall, and you get shorts.

 

[kai38]

The wiring loom rubs at the EGR and sometimes behind the firewall, and you get shorts.

Sounds like what the shop was telling me over the phone today.
Also sounds like its getting more and more expensive too!
Thanks,

 

[L8Shift]

Code was for cyl. #4 for me..

The shop should nicely insulate the harness as well...

 

[desmocruiser]

I had some idle problems and a cel on the #6 cyl. Turned out the harness had been compromised in two places, around the egr valve and also the glove box area where the ecu and dash brace is located. The only 100% fix was to replace the complete engine wiring harness.

 

[re_guderian]

Is there a common problem on the FZJ80s with the EFI wiring harness? If so is there a link to the problem and the fix?
Thanks, Kirk

Kirk,

What type of problem are you having? I've had fuel pump relay wiring issues (between resistor and relay).

 

[kai38]

Kirk,

What type of problem are you having? I've had fuel pump relay wiring issues (between resistor and relay).

Heres where I think it all started.
I had the exhaust replaced w/ the cats removed. It felt like it was slower on take off which I thought should be better w/ the free flow of exhaust. I havent looked yet because the 80s at the shop for 1wk today but I think the o2 sensors wires might have been touching metal all this time making a short on & off.
The cruiser was running rough so the shop checked it out and said plug #5 was the problem I replaced the wires/plugs etc still ran rough. I took it to the shop and as soon as they drove it in the garage it died. They found a burnt fuseable link wire of the battery and from there have found the FI harness melted.
They called a Toyota repair shop and spoke the the owner that told them it happens some times and what and where and how he repairs it. I had mentioned the 02 sensors wires to my shop but they didnt think it had anything to do with the start of my problems. After talking to the owner of the Toyota shop he says YES that can short out and cause problems He was going to call my shop and let them know.
I will also go by the shop w/ my 80 this morning to look at the wiring to see what all has been damaged.

Makes me miss my 60

 

[dfmorse]

KAI;

If u can get pics of this and post them it would be nice for troubleshooting.

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[kai38]

KAI;

If u can get pics of this and post them it would be nice for troubleshooting.

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I will get back to the shop Friday and take pictures if they havent closed it all up by then.
Also I went to check the 02 sensor wires I thought were left hanging after the cats were removed, the muffler shop put them back into the exhaust pipe right at the bend from the engine were the cats were at.
Kirk

 

[kai38]

KAI;

If u can get pics of this and post them it would be nice for troubleshooting.

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pictures here >>>> http://kai38.zoto.com/galleries/fzj80harnessesmeltdown