I wanted to see if anyone else has seen a problem I’ve been experiencing.
I have been chasing an issue for the past month with my 00 LX dieing randomly. At first it started showing signs of a miss-fire so a new denso coil pack, then a new CEL code popped up so a new O2 sensor on the same bank. It drove fine for a week then started dieing when idling or when I came to a stop. The idle seemed a little rough so I pulled the spark plugs (they all look normal and only have maybe 30,000 miles) then pulled the fuel injectors, cleaned them, replaced the screens and o-rings and checked fuel trims on Techstream. Wiggled every wire going to the ECU and engine sensors and it drove fine for 3 days even some off-roading.
Then it happened again this week at 2 stoplights (dies right when I came to a complete stop, no CEL and starts right up) then as I came to a stop in traffic it almost died but then I got ABS/Brake warning lights and buzzer. When I pulled over I checked everything over and gave the booster accumulator a whack and the engine sputtered and almost died, I hit it 3 more times and every time it did the same thing.
I pulled the brake master cylinder assembly and found the the brake booster pump terminals were corroded and the boot was filled with brake fluid from a weeping leak behind the ABS module.
My theory is that when coming to a stop the booster motor was shorting out through the fluid in the boot causing the engine to die and not throw a CEL code.
I’m ordering a new Toyota brake master assembly because everything I’m reading says don’t try to repair it. But I just wanted some confirmation that it seems like the plausible problem causing the truck to die.
I have been chasing an issue for the past month with my 00 LX dieing randomly. At first it started showing signs of a miss-fire so a new denso coil pack, then a new CEL code popped up so a new O2 sensor on the same bank. It drove fine for a week then started dieing when idling or when I came to a stop. The idle seemed a little rough so I pulled the spark plugs (they all look normal and only have maybe 30,000 miles) then pulled the fuel injectors, cleaned them, replaced the screens and o-rings and checked fuel trims on Techstream. Wiggled every wire going to the ECU and engine sensors and it drove fine for 3 days even some off-roading.
Then it happened again this week at 2 stoplights (dies right when I came to a complete stop, no CEL and starts right up) then as I came to a stop in traffic it almost died but then I got ABS/Brake warning lights and buzzer. When I pulled over I checked everything over and gave the booster accumulator a whack and the engine sputtered and almost died, I hit it 3 more times and every time it did the same thing.
I pulled the brake master cylinder assembly and found the the brake booster pump terminals were corroded and the boot was filled with brake fluid from a weeping leak behind the ABS module.
My theory is that when coming to a stop the booster motor was shorting out through the fluid in the boot causing the engine to die and not throw a CEL code.
I’m ordering a new Toyota brake master assembly because everything I’m reading says don’t try to repair it. But I just wanted some confirmation that it seems like the plausible problem causing the truck to die.
