Q: My 94 camry goes dead immediately after cranking. It shows a code of 31. on 1994 Toyota Camry

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My car has 318000 miles. The transmission has been replaced 3 yrs ago. No sensors or anything electrical has ever been replaced on this car except plugs and wires and distributor cap. Was running fine before this happened two days ago.
(3) Answers
(3) Comments
should I replace the map sensor or could it be something else making this 31 code show? Would a clogged egr valve make it have these symptons?
Is distributor turning? When's the last time the t-belt was changed? Is it cranking over faster or at irregular speed? Does it start , then stall , or crank , but no start?
I had the tbelt changed 3 yrs ago. It's been driven 18000 miles since it was changed. The car cranks and dies immediately. I changed the fuel filter thinking it wouldn't getting any gas but that didn't solve the problem.
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