[01 SolarYellow]

Okay, lets look at control issues. Do you have a spare boomslang harness and emanage you could brow from someone? You could try briefly to unplug the boomslang and run for a sec on the factory ECU only. If it fires. Then the boomslang may have gone bad or the emange. I have had a boomslang harness take a krap before.

 

[lsexus]

Okay, lets look at control issues. Do you have a spare boomslang harness and emanage you could brow from someone? You could try briefly to unplug the boomslang and run for a sec on the factory ECU only. If it fires. Then the boomslang may have gone bad or the emange. I have had a boomslang harness take a krap before.

No.
disconnect the whole thing from which part exactly?

 

[Thatblueis]

No.
disconnect the whole thing from which part exactly?

Disconnect your boomslang harness and plug the OEM harness back in and try and start it and see if your problem persists.

 

[01 SolarYellow]

No.
disconnect the whole thing from which part exactly?

Thatblueis
What they said.

 

[lsexus]

Not the harness, disconnected it and same thing just cranks doesn’t turn over

 

[01 SolarYellow]

Okay, I know some of this may be repeat Crank and cam sensor checked out okay?

 

[lsexus]

Okay, I know some of this may be repeat Crank and cam sensor checked out okay?

I haven’t got any codes for those sensors.
I guess should start checking voltage on sensors with a multimeter now ?

 

[lsexus]

Any specifics on where to start, and is there a data/chart that I can see what specification everything should be at?

 

[01 SolarYellow]

https://www.2jzgarage.com/2013/10/2005-is300-service-manual/

 

[lsexus]

https://www.2jzgarage.com/2013/10/2005-is300-service-manual/

Ohhh wow! Thanks man!
How long has this website been around ?

 

[ill_mannered]

Ohhh wow! Thanks man!
How long has this website been around ?

1,000 years.

 

[Thatblueis]

1,000 years.

Some say it was written by the great Kiichro Toyoda himself etched in stone tablets.

 

[lsexus]

Some say it was written by the great Kiichro Toyoda himself etched in stone tablets.

Lmao

 

[lsexus]

Is there any way the timing is off causing it to not start?

 

[lsexus]

 

[ill_mannered]

Time to drive it off a cliff.

jk, seems like simple repairs there.

 

[lsexus]

Time to drive it off a cliff.

jk, seems like simple repairs there.

You read my mind. I already entered cliff on my gps destination.

 

[lsexus]

So I took it to a local shop , they said cylinder 4, 5 low compression and the timing was off they adjusted the timing and cylinders 4 5 still low compression…. So now what?

 

[01 SolarYellow]

So I took it to a local shop , they said cylinder 4, 5 low compression and the timing was off they adjusted the timing and cylinders 4 5 still low compression…. So now what?

Timing is not that adjustable. Unless you have an aftermarket exhaust cam gear. If you do not. The shop is giving you a line of BS. If the timing belt is off a tooth. You may have bent some valves. If they persist, I would go to a different shop.

 

[Thatblueis]

Timing is not that adjustable. Unless you have an aftermarket exhaust cam gear. If you do not. The shop is giving you a line of BS. If the timing belt is off a tooth. You may have bent some valves. If they persist, I would go to a different shop.

It might be the timing was off so they retimed it and redid the compression check and still no compression in 4 and 5. IF this is so I'd suspect a bent valve or several. Do a leak down and see where it's leaking too.