Cranks will not start

MEMPHIS HOWAT

MEMBER
1993 TOYOTA PICKUP
3.0L
6 CYL
AUTOMATIC
92,000 MILES

So, I already wrote my whole post out for it not to post so I will keep this short and sweet. I really need help I have to move by the 10/26 and my rig needs to come as well.
Crank no start issue 1993 Toyota pickup 22re/1993 Winnebago Warrior.
Went from being reliable to randomly not starting one day, sat for a few weeks then started right up randomly, then shut off about 3 miles down the road, wouldn't start for a few minutes then started and got me too my destination. Since it has been sitting it has not started again, no fuel pump hum when I put the key in the run position, jumped B+ too FP and hear pressure in the rails and hum in the tank still would not start on jump. Checked EFI and it may be bad not sure if I could feel the click, swapped with headlight relay and still no start. Went to the auto parts store and was given a relay w the part number "T05 SH121" still not sure if I could feel the click with this relay in, but still no luck. Also tired headlight relay in EFI and new relay in headlights place and it seemed too function as without the headlight relay it it wouldn't crank before, but still no start. Jumped the diagnostic so I could get a engine code and the code I was given was '12'. Not sure what too do from here as I have little too no experience working on vehicles, should my next step be too check the circuit opening relay? Anyone who knows what their talking about that could help would be greatly appreciated.

3 Replies

JACOBANDNICKOLAS

MECHANIC
109,755 POSTS

Hi,

You indicated that even with the fuel pump running, the vehicle doesn't start. Do me a favor. I need you to check the if the vehicle is getting spark. Here is a link that shows how to check for spark:

https://www.2carpros.com/articles/how-to-test-an-ignition-system

If there is no spark, follow these diagnostics to see if there is an issue within the distributor.

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The attached pics correlate with these directions.

1993 Toyota Truck Pickup 2WD V6-180.5 2959cc 3.0L SOHC (3VZ-E)
Component Tests and General Diagnostics
Vehicle Powertrain Management Sensors and Switches - Powertrain Management Sensors and Switches - Computers and Control Systems Crankshaft Position Sensor Testing and Inspection Component Tests and General Diagnostics
COMPONENT TESTS AND GENERAL DIAGNOSTICS
INSPECTION

pic 1

1. Disconnect the wiring connector near the distributor.
2. Connect one end of an ohmmeter to the G1 terminal at the distributor. Connect the other end to the G- terminal. G1 Pickup Coil Resistance:

Cold (14° - 122°F): 125 - 200 ohms
Hot (122° - 212°F): 160 - 235 ohms

3. Connect one end of an ohmmeter to the G2 terminal at the distributor. Connect the other end to the G- terminal. G2 Pickup Coil Resistance:

Cold (14° - 122°F): 125 - 200 ohms
Hot (122° - 212°F): 160 - 235 ohms

4. Connect one end of an ohmmeter to the NE terminal at the distributor. Connect the other end to the G- terminal. NE Pickup Coil Resistance:

Cold (14° - 122°F): 155 - 250 ohms
Hot (122° - 212°F): 190 - 290 ohms

pic 2

pic 3

5. Using a non-magnetic feeler gauge, measure the gap between the signal rotor and pickup coil projection.

G1 Air Gap: 0.2 - 0.5 mm (0.008 - 0.020 in)
G2 Air Gap: 0.2 - 0.5 mm (0.008 - 0.020 in)
NE Air Gap: 0.2 - 0.5 mm (0.008 - 0.020 in)

NOTE: The air gap is not adjustable. If any of the above tests reveal a pick-up coil outside specifications, replace the distributor assembly.

__________________________

Let me know.

Joe

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