Couldn't start in super hot weather ... cranking no problem. (1 Viewer)

[goldigital]

2006 LX with only 160K miles ... first time in 5 yrs let me down :-( and this happened during super hot day (100+ F) going from Vancouver to Okanagan.
Had to wait about 20-30 and it started again, drove it kinda gently for another 10km and it died this time during me driving it ... had pull to the side on the hwy, couldn't start right away and tried several times, gave it some time again, another 15-20 min, started and was able to go this time almost 200km distance. It seemed slightly underpowered but going on all speeds and climbing up hills np. Made it home

Checked the codes next day and see I got few! :-( ... minus the TPMs which have been there for ever. Not worrying about that.

Have ENG check lite on, VCS TRAC on, VCS OFF on,

master cylinder pressure sensor C1246 seems worrisome, but can't imagine had something to do with unable to start?

Anyone knows what the CALIBRATION means? with these numbers below?
Maybe you can help me understanding this whole event and the DTCs etc, I rally appreciate any input!

 

[Mars06LC]

Hot Starting Problems

I have been trouble starting my truck when the engine is hot. Here are the details: Year: 1999 Toyota Land Cruiser Location: Colorado (~6-7000ft) Mileage: 203k Here is what's happening: I drive the car until the engine is hot, then shut it off. If started again immediately after turning it off...

forum.ih8mud.com

Lots of threads on here about "crank but no start". Could be fuel pump on its way out or vapor lock condition like noted above. Have you heard any strange whining from under 2nd row seat?

 

[goldigital]

Hot Starting Problems

I have been trouble starting my truck when the engine is hot. Here are the details: Year: 1999 Toyota Land Cruiser Location: Colorado (~6-7000ft) Mileage: 203k Here is what's happening: I drive the car until the engine is hot, then shut it off. If started again immediately after turning it off...

forum.ih8mud.com

Lots of threads on here about "crank but no start". Could be fuel pump on its way out or vapor lock condition like noted above. Have you heard any strange whining from under 2nd row seat?

No strange noises at all, except the starter doing its thing with no results, it seemed to me fuel is not getting there. None of the DTCs indicated that fuel pump could be the culprit.

 

[goldigital]

No strange noises at all, except the starter doing its thing with no results, it seemed to me fuel is not getting there. None of the DTCs indicated that fuel pump could be the culprit.

Thanks Mars06LC!

 

[Mars06LC]

I did find this thread (Check engine, VSC TRAC and VSC OFF Lights - https://forum.ih8mud.com/threads/check-engine-vsc-trac-and-vsc-off-lights.946463/) with the same codes as you have... Doesn't explain the no start condition, but could explain the codes. As for the no start I'd look on mud into "crank but no start", EFI relay, and vapor lock given the heat.

 

[ramangain]

All your DTCs belongz to dat heat

 

[goldigital]

All your DTCs belongz to dat heat

TPMs was there before, but never had any issues prior

 

[jerryb]

there aren't any codes for fuel pump. I think I sort of could see the rest coming along with a hot fuel pump/ low voltage no start.
Buy a new one and clear the codes and see what comes back.

1201 is nothing, tmps nothing, 0420 maybe related to fuel starving. You could search all the 420 threads.
ABS and the rest could or maybe related to voltage while you cranked and didn't start.
504 lx only light bulb out.

clear them and charge the battery, get a new fuel pump, drive for two weeks and see if the ABS stuff comes back. denso 950-0210 pump.

Worry if the abs stuff persists, and if you get the alarms and screeching pull over and stop. If 420 persists after the fuel pump deal with that later also.

Pay no attention to the efi relay or the fusebox threads.

 

[goldigital]

there aren't any codes for fuel pump. I think I sort of could see the rest coming along with a hot fuel pump/ low voltage no start.
Buy a new one and clear the codes and see what comes back.

1201 is nothing, tmps nothing, 0420 maybe related to fuel starving. You could search all the 420 threads.
ABS and the rest could or maybe related to voltage while you cranked and didn't start.
504 lx only light bulb out.

clear them and charge the battery, get a new fuel pump, drive for two weeks and see if the ABS stuff comes back. denso 950-0210 pump.

Worry if the abs stuff persists, and if you get the alarms and screeching pull over and stop. If 420 persists after the fuel pump deal with that later also.

Pay no attention to the efi relay or the fusebox threads.

Ok, thx, ... did reset the codes yesterday, drove it for about 5 min ... check the codes and the ABS/VSC/TRAC DTC came back C1223 C1246 C2122 C2172

ordered new fuel pump, filter ... and hoping for best!

 

[Sargy]

Yep. Sounds like a fuel pump. Keep us posted

 

[goldigital]

Well, ... still waiting for the fuel pump, which should arrive in the next several days. In the mean time I have replaced ALL four O2 and fuel/air sensors, in both banks 1 and 2. Still getting P0420 (bank 1 catalic inefficiency) :-( shall i go and replace CAT now? ... seems overkill since the truck starts and drives perfect!
I DON'T KNOW. I'll keep reading the P0420 posts and see what's going on with these damn CATs