Trooper (4 Door) V6-3165cc 3.2L DOHC (6VD1) (1992)
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EGR Backpressure Transducer: Testing and Inspection
BPT Valve
1.
Remove vacuum hoses (3) from valve.
2.
Place finger over "VSV" fitting on valve and blow into "EGR" fitting of valve. Air should pass through filter on back of valve.
BPT Valve Test
3.
Connect vacuum pump to "VSV" fitting of valve and plug "EGR" fitting.
4.
Blow air into "S" fitting. Vacuum pump should hold vacuum.
5.
Replace valve if it fails these tests.
