chrysler popping back throuhgh the throttle body


Old 01-31-06, 06:10 PM
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Join Date: Jan 2005
Posts: 80
chrysler popping back throuhgh the throttle body

Im working on a 94 chrysler New Yorker 3.3L . Ive put new plugs and wires on it and a new map sensor. This hasnt fixed the problem of the car wanting to backfire through the throttle body when you give it gas under a load. It idles fine and runs ok until you give it gas under a load. No dtc`s stored . I`m lost so any help appreciated, or poin me in a good direction like fuel press. or air leak?
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Old 01-31-06, 06:38 PM
pgtek's Avatar
Join Date: Oct 2004
Location: north Carolina
Posts: 1,391
check firing order on wires
check gap on magneto and also check roto rnd dist cap
check timing
if all is fine could be timming belt
Old 02-01-06, 02:50 AM
Join Date: Dec 2001
Posts: 2,538
using a spark tester test the output of the coil pack on each cylinder, use a spark tester that has a large gap or an adjustable gap should be able to jump 1/2 inch at the spark plug end of each plug wire.
have you had a vacum guage installed while it is acting up it could be a valvetrain related problem.
Old 02-01-06, 03:01 AM
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Join Date: Feb 2005
Posts: 435
If your wires are new and in order, replace the coil pack.

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