2000 LX 470 very intermittent starting issue (1 Viewer)

[anthonydiaz85]

My 2000 LX 470 has 188,000 miles on it. I have a starting issue that I am trying to track down before I start throwing money at it with out reason and to be honest I am becoming a little defeated. I bought this with the intention of trail driving but I am a little scared to take it too far because I do not want to become stranded with a starting issue.

Every couple of weeks the issue pops up. I turn the key, the engine starts to turn over, then it quits. I do not lose electrical power. It feels as if there is not any voltage being delivered to the starter. I have found that if I turn the car off and keep trying to start the car, it will eventually turn on.

CHOWCARES on youtube posted a video about this issue and diagnosed it down to the engine bay fuse box at the 20 amp fuse which delivers fuel. I have not pulled the fuse to inspect it yet. I will do that today or tomorrow. The battery reads good voltage when the car is off.

I do not really want to pull the fuse box because I hate messing with electrical especially when it is the heart of the electrical system. Any thoughts on what this could be or where I should start testing?

Thanks guys

 

[shane431]

EFI Relay Bypass Kit (Immobilizer Fix) for UZJ100/LX470

This bypass kit bypasses the bad EFI relay circuit in the fuse box so that the immobilizer system gets adequate power supply for starting the car. I made this for myself after my new 30A replacement fuse - initial fix for crank but not start problem, failed to start after 4 days. Some members...

forum.ih8mud.com

 

[OwnerCS]

Try a new starter relay. It bought me a few good starts before the starter finally gave up.

 

[anthonydiaz85]

EFI Relay Bypass Kit (Immobilizer Fix) for UZJ100/LX470

This bypass kit bypasses the bad EFI relay circuit in the fuse box so that the immobilizer system gets adequate power supply for starting the car. I made this for myself after my new 30A replacement fuse - initial fix for crank but not start problem, failed to start after 4 days. Some members...

forum.ih8mud.com

Thanks shane431. I'm going to read into this thread. I read the first page and it was pretty heated between two members haha. If it is a permanent fix then it is a lot better than buying a new damn fuse box.

 

[anthonydiaz85]

Try a new starter relay. It bought me a few good starts before the starter finally gave up.

Do you know how to test the starter relay for continuity or resistance? Im really noob about electrical and I am not sure what terms to use? How do I test if the relay is good?

EDIT: I am youtube'ing it right now.

 

[OwnerCS]

Do you know how to test the starter relay for continuity or resistance? Im really noob about electrical and I am not sure what terms to use? How do I test if the relay is good?

EDIT: I am youtube'ing it right now.

I watched this video. I had a known good relay from my LX and just moved it to the LC. It helped for a while, but the root cause was an old starter at 320.000 miles. You mileage is low enough to consider another issue before going down for a starter.

 

[anthonydiaz85]

I watched this video. I had a known good relay from my LX and just moved it to the LC. It helped for a while, but the root cause was an old starter at 320.000 miles. You mileage is low enough to consider another issue before going down for a starter.

I just watched the video. I actually watched this before but had forgotten about it. I'm going to keep a wire in the box like him. Ill be testing my relay tomorrow. Now I am thinking what I do if the relay passes the test. The link above about the bypass is intriguing.

 

[anthonydiaz85]

I just checked the starter relay.

It passed the OHM test.

Here is the 20 amp fuse for the EFI.

This also passed. The prongs were a bit dirty so I gave it a very light pass with a high grit sand paper, threw a dot of dielectric grease.

This is the space for the 20 amp fuse and it looks good to me. But also the fuse was snug coming out and snug going in. So the connection seems good.

I also checked the voltage at the starter relay and got this reading:

Does this mean the fuse box most likely is not the problem and that kit being sold on here will help?

I want to check the EFI relay but it is really stuck in there good.

 

[anthonydiaz85]

I got the EFI relay out. Very sung and the connections in the fuse box looked clean.

The relay passed the OHM test at 73. The prongs looked good too.

Here is the voltage at the EFI relay connection in the fuse box

These were the main things it sounded like I needed to be worried about and everything seems to check out.

 

[anthonydiaz85]

Try a new starter relay. It bought me a few good starts before the starter finally gave up.

The starter relay looks to be in good order. Passed the OHM test.