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I keep blowing my EFI fuse. I am using the correct fuse. I've checked all my grounds and they appear to be fine. The only code I am throwing is #11.
Any help is appreciated. Thanks.
Any help is appreciated. Thanks.
Keep blowing EFI fuse
- Thread starter Kenny[NK]
- Start date
Definitely a short. Have you done any wiring modifications or wired anything into the harness recently?
I have not, but the previous owner had probed a lot on the harness. Everything works, though. It's been like that since I've owned the car.
I did put new battery cables on the other day but I'm positive they are fine.
My O2 sensor wire also is fine.
I did put new battery cables on the other day but I'm positive they are fine.
My O2 sensor wire also is fine.
When I did a search for "blown EFI fuse", those were some of the suggestions in the threads. I thought I might as well check it to be safe. Thanks for the clarification.
It's the heater wires that blow the fuse. That said I forget if N/As are one or three wire. The book shows them to be three wire but...
What?! You screwin' with me? It's a one wire sensor.... the book's over optimistic. You could install a 3 wire JJ, if you've got a N/A around and you REALLY feel the need. :icon_razz
Aha, so I was right. Damn online TEWD shows a three. Gotta forgive me either way. Don't own an N/A. Try to avoid them as much as possible 
edit: I was looking at the sub...
edit: I was looking at the sub...
Well, if it makes you feel better, my O2 sensor has more than one wire.
Seriously though... relying on free internet references for information. For shame. <tisk tisk tisk> Haven't I taught you better (By example )? I AM the product of independent, online research! Be afraid, very afraid...
Seriously though... relying on free internet references for information. For shame. <tisk tisk tisk> Haven't I taught you better (By example
)? I AM the product of independent, online research! Be afraid, very afraid...
my car did this for awhile, it turned out it was because the p/o did a fuel pump rewire and didnt cover the end of the old power wire, urs might not be that one, but go through all wires that are related to the efi fuse and make sure none are grounding out.
I had this problem on my 2JZ running a 7MGTE harness. Usually in higher RPM while boosting.
Once I did a quick once over (X5) on my harness to make sure there was nowhere I could have tampered with my wiring, causing this problem, I decided to re-loom/tape my harness. Since doing this and securing it under the intake manifold with zip-ties; I havn't blown another EFI fuse.
I guess it was just grounding out through the loom somewhere. I don't know how I missed it, but at least I fixed it.
Once I did a quick once over (X5) on my harness to make sure there was nowhere I could have tampered with my wiring, causing this problem, I decided to re-loom/tape my harness. Since doing this and securing it under the intake manifold with zip-ties; I havn't blown another EFI fuse.
I guess it was just grounding out through the loom somewhere. I don't know how I missed it, but at least I fixed it.
The loom can rub on the intake pipes if the plastic harness clamps fail (which they tend to do after 20 years of high underhood temps. After a while the rubbing will go wear through the insulation and into the copper. This is not easy to see even if you are looking for it. Follow your engine harness around and look for places it might be rubbing on grounded metal parts.
Went through the harness and fixed a ground I didn't see as well as my o2 sensor wire was melted.:nono: Fixed that and it fired right up. Only problem I'm having now is that it feels a little hesitant when revving and driving(5spd). When I turn the wheel, the ps pump almost kills the car if it is idling. Also the engine seems to be running kind of rich.