1988 Dodge Omni check engine lite on

1988 DODGE OMNI
109,000 MILES • 4 CYL • FWD • AUTOMATIC
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DAYFLYER
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  • 1 POST
have done some exhaustive t.s. on the ck englt get a code 32 from the obd 1 computer, have tried blocking off the egr ports for t.s. purposes, replaced the egr valve assy, checked the entire engine for vacuum leaks,exhaust leaks. engine runs smooth at idle andthru all phases of operation,no set mileage as to when lite comes on can be as little as 10 or as many as a 100 miles any ideas as to helping, fresh tune up new plugs,wires,cap/rotor,air/pvc filters pcv chvalve currently stumped,mark
Oct 1, 2008 at 12:56 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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2CARPRO JACK
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Use a vacuum pump to apply vacuum to EGR valve at idle, with idle speed motor disconnected.If engine speed does not drop to drop when 2.5-3.5 hg of vacuum is applied,replace EGR backpressure valve assembly. If it does drop,reconnect ISC motor and apply 10 hg of vacuum,if it doesnt hold for 10 seconds th evalve assembly is bad.There is an entire diagnostic chart here

https://www.2carpros.com/articles/mitchell1eautorepair-car-repair-manuals

Voltage tests for the EGR controol system, everything you need to find the problem
Oct 2, 2008 at 9:52 AM
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