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Jerry, Master Mechanic
Category: Dodge
Satisfied Customers: 1754
Experience:  ASE Master tech, 30 years exp. troubleshooter, driveability tech
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Dodge Stealth Twin Turbo: I have a 1992 Dodge Stealth Twin

Customer Question

I have a 1992 Dodge Stealth Twin Turbo that is running rough....To date the mechanic has changed the Maf Sensor, and Ecm. He has also checked for vacum leaks and foun none....The car started this at first only when it rained, but has now graduated to full time...All filters and tune up has also been done by said mechanic prior to this problem....The mechanic has now given up on my car...Any Idea as to what it could be? Thanks Mike
Submitted: 2 years ago.
Category: Dodge
Expert:  Gary replied 2 years ago.
Hi there,
I'll see if I can offer you some help.
I am a performance car mechanic, so any more info you can give back could be helpful.
You say your mechanic has given up.
If the car a tune just prior to your problem, it could be faulty spark plug/s.
Has he done a compression test and a leakdown test? Has you reinspected the spark plugs to isolate one or more cylinders? Have the injectors been flowtested?
When does the roughness occur, at idle, low speed cruise, under load etc?