90 460 no start

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Sep 1, 2003 | 02:17 PM

ryno_co

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Joined: Aug 2003

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90 460 no start

Hi Folks, Hope someone here has some ideas to help me.

Truck died coming home from work and refused to start.
I pulled some codes and got an334 and 128 ( as i recall) The 334 is EGR closed voltage higher than expected and 128 is MAP vacuum circuit failure. I checked the vacuum line to the MAp and it had a small crack so I replaced it, but to no avail. I have 40psi fuel pressure on the rail and I have spark. Anything else I should be checking. Thanks Ryan

Sep 1, 2003 | 09:44 PM

LxMan1

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Joined: Dec 2001

Posts: 22,436

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From: Louisville,Ky.

90 460 no start

Try holding it to the floor and see it if will start. It could be flooded. If not, I would maybe check the timing to see if the timing chain may have jumped.
Jimmy