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Posted on Jan 02, 2017
The first thing to check is the intake cutoff valve. It's similar to a throttle body, but is usually fully open until the engine is shut off, then it closes fully to minimize engine shudder.
Sometimes carbon will build up in the bore where it sits, and after it closes it will not reopen.
It's the first part of the intake after the plastic tube from the maf sensor/air filter housing.
You can pretty much just put your hand on it and push around a little bit, and the spring will return it to the open position. It has an arm sticking out that is actuated by a vacuum solenoid.
I thought of this because you said it would not accelerate, and carbon also builds up inside the intake manifold, reducing airflow so much that it can't get enough to accelerate.
This is assuming that you've got a situation where the engine is cranking, but not starting.
Let me know if this helps or if you have more questions. They often have problems with the glow plug circuit, but this should set a trouble code.
Posted on Feb 17, 2011
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