1990 Toyota Pickup code 43

MCDANIEL30

MEMBER
1990 TOYOTA PICKUP
2.4L
4 CYL
2WD
MANUAL
75,000 MILES

Started vehicle ran for about 30 seconds then made odd sound and died will now crank but not start checked for spark thats good checked ignition its good has flash code 43 checked voltage of sta wire at ecu only.26 volts all other power and ground supplies at ecu are reading in spec

Friday, June 6th, 2014 AT 7:05 PM

3 Replies

JACOBANDNICKOLAS

MECHANIC
110,055 POSTS

You have 26 volts at the ECU? Are you sure? If you have a good spark, try something for me. See if the engine will start using starting fluid.

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Friday, June 6th, 2014 AT 8:28 PM

JACOBANDNICKOLAS

MECHANIC
110,055 POSTS

Also, that code is for no starter signal to ecm, Have you checked all of the computer and engine grounds? If those all check good and clean it is possible that the pressure regulator is going bad causing a problem

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Friday, June 6th, 2014 AT 8:34 PM

MCDANIEL30

MEMBER
6 POSTS

Thats.26 as in less than a volt at sta wire at ecu connector, I checked all pins at ecu pertaining to grounds, main relays and anything tied to starting issue

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Friday, June 6th, 2014 AT 8:43 PM