Discussion:
Drive by wire HELP!!!!

I have a Toyota 7FGU30 forklift with a 4Y ECS motor on LPG. I'm having a no start issue. I've tried everything I've read on this website (no broken wire at distributor, fuel solenoid opens, have spark, all of that good jazz). I have no codes flashing on the dash but I haven't been able to get it started. Don't know if I'll have codes with just the key on. I'm being lead to believe
a) no tach reading being sent to ECU from distributor.....How do I test?
b) the two throttle position sensors in the throttle body are bad....again no codes. How do I test the wires?
c) TPS on the accelerator is bad.....again no codes How do I test?


I've searched and searched and can not find any info on this drive by wire. I understand how it works just need to know the specs on it. Would like to narrow it all down before I just start throwing parts at this thing.

burdettagllc(at)gmail(dot)com
  • Posted 13 Feb 2018 11:39
  • By thewitte
  • joined 13 Feb'18 - 2 messages
  • Colorado, United States
Showing items 1 - 2 of 2 results.
first off you need to isolate fuel problem or spark
as spark is easier verify spark plug is getting good fire
fuel verify fuel pressure at throttle motor on the carb round thingy
aproximatly 3 psi i think
  • Posted 23 Apr 2018 06:39
  • By forkguy
  • joined 25 Jul'17 - 28 messages
  • Texas, United States
there are lots of problems with the tach wires breaking at or near the distributor plug. also make sure it not flooding on LPG.
  • Posted 30 Mar 2018 01:40
  • By ray_j
  • joined 22 Aug'14 - 13 messages
  • Missouri, United States

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Fact of the week
The black box flight recorder was invented by Australian scientist David Warren in the mid-1950s. While initially met with indifference in Australia, his invention gained international recognition, particularly in the UK, and is now a mandatory piece of safety equipment on all commercial aircraft.
Fact of the week
The black box flight recorder was invented by Australian scientist David Warren in the mid-1950s. While initially met with indifference in Australia, his invention gained international recognition, particularly in the UK, and is now a mandatory piece of safety equipment on all commercial aircraft.