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3vze starts then stalls

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Old Oct 27, 2019 | 06:57 PM
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3vze starts then stalls

I’m new to Toyota’s but I just bought a 93 pick up 6cylinder manual it hard starts then runs for a few seconds the stalls out it has a new afm,tps,plugs,wires,cor it has me puzzled and can’t seem to move forward
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Old Nov 1, 2019 | 11:23 AM
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Welcome to YotaTech!

Can you explain more on what you have done and why you have replaced the mentioned parts?

This problem does sound like a Volume Air Flow Meter / Circuit Opening Relay circuit problem, but lets test to be sure.

On these trucks, you can run a pretty simple test to help narrow down your possibilities: Find yourself a paper clip, then find the "Diagnostic Connector" by the fuse box. With the paper clip, jump the +B and the Fp terminals. This allows you to bypass the Air Flow Meter, the Circuit Opening Relay, and their wiring, and gives power directly from the diagnostic connector to the fuel pump wiring. The fuel pump should now run with the key in the "ON" position. Then try to start the engine. If the engine starts and runs now, you can safely say the problem is somewhere in the VAFM -COR circuit.

Remember, the jumper in the diagnostic connector is just for testing, as it bypasses the fuel shut off safety feature of the VAFM-COR system.

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Old Nov 13, 2019 | 07:50 AM
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I replaced the air flow meter and cor because reading on forums I believed I could start there. When I put a paper clip in nothing changes but I’ve never been able to get the paper clip to work for odb codes either ..
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Old Nov 17, 2019 | 05:55 PM
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Any help would be appreciated I’m still confused on why I can’t get the paper clip to work in the diagnostic ports
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