Intermittent starting issues

[BeachnCruiser]

We have solved the issue. (I think) It just started ten times in a row.
I removed the factory alarm system.
Thank you for the help and the awesome write up with pictures!

I am experiencing the same thing in my 1991 FJ80. The motor cranks just fine but won't start. If I let it sit for 10 minutes it will start. Thought it was the fuel pump but now since I read this I am second guessing my diagnosis. I have no use for the alarm system. I don't have the key fobs anyway. Where is the Alarm on a 91 anyway?

 

[leonard_nemoy]

I am not sure if the 91 came with an oem alarm system. My 97 has one under the drivers seat and my 91 did not have one under the drivers.

My 91 did have an aftermarket alarm thingy that would act up from time to time. I think it was called an rs-3000 or viper something.

Maybe this will help

Help! Alarm took over my truck! - https://forum.ih8mud.com/threads/help-alarm-took-over-my-truck.795600/

 

[SucioP]

Reviving this oldy but goody. Intermittent start on my 450. Now sons daily.

He sent me a video today and it sounds like the plunger is spinning but not fully engaged.

Parts cannon thus far:
Neutral safety (occasionally shifting it to neutral would work)
Replaced contacts and plunger two weeks ago. They looked fine apart from some weird wear / gouging.
Battery voltage is fine.
HAVE NOT replaced fusible link but have a couple laying around.

Video in the link Won’t start

Thoughts?

 

[SucioP]

Reviving this oldy but goody. Intermittent start on my 450. Now sons daily.

He sent me a video today and it sounds like the plunger is spinning but not fully engaged.

Parts cannon thus far:
Neutral safety (occasionally shifting it to neutral would work)
Replaced contacts and plunger two weeks ago. They looked fine apart from some weird wear / gouging.
Battery voltage is fine.
HAVE NOT replaced fusible link.

Thoughts?Adding

Reviving this oldy but goody. Intermittent start on my 450. Now sons daily.

He sent me a video today and it sounds like the plunger is spinning but not fully engaged.

Parts cannon thus far:
Neutral safety (occasionally shifting it to neutral would work)
Replaced contacts and plunger two weeks ago. They looked fine apart from some weird wear / gouging.
Battery voltage is fine.
HAVE NOT replaced fusible link but have a couple laying around.

Video in the link Won’t start

Thoughts?

Bump as I added video link

 

[deltapine1]

As stated above remove the factory alarm. If the problem persists you need to check the Park/Neutral Safety switch on the passenger side of the transmission case. It can be out of adjustment and the leads/wiring can be abraded and creating intermittent no start and only a click.

Been there and done that.