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gstst4
User
Jun 9, 2010, 1:34 PM
Post #1 of 7
(1471 views)
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1992 Plymouth Voyager 3.3 liter with 188,000. When driving longer than 20 minutes my engine starts to lose power and almost feels like it's going to stop with some light back fire. I changed plugs and wires thinking that may help, but no luck. In fact after changing plugs and wires it runs a little rough. Don't understand why other than they changed plugs on my vehicle to a less hot plug is what I was told. Need some advice what to check or change next. 
(This post was edited by gstst4 on Jun 9, 2010, 1:40 PM)
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nickwarner
Veteran
/ Moderator
Jun 9, 2010, 3:42 PM
Post #2 of 7
(1463 views)
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Re: lose of power
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Need to get your backpressure checked to see if your cat is plugged
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gstst4
User
Jun 15, 2010, 8:56 AM
Post #3 of 7
(1445 views)
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Re: lose of power
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Step one is not the problem. Backpressure is fine not the cat converter. Now getting more poor gas mileage.
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nickwarner
Veteran
/ Moderator
Jun 15, 2010, 10:19 AM
Post #4 of 7
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Re: lose of power
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do you have any codes coming up? If so post them.
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gstst4
User
Jun 16, 2010, 9:40 PM
Post #5 of 7
(1442 views)
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Re: lose of power
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No codes , no nothing. Engine is just running rough. Back firing at low speeds on hills. Have to accelerate to 2nd to get some power.
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Hammer Time
Ultimate Carjunky
/ Moderator
Jun 17, 2010, 2:34 AM
Post #6 of 7
(1438 views)
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Re: lose of power
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It sounds like you are concluding all these facts without actually testing anything. Have you?
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Sidom
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/ Moderator
Jun 17, 2010, 11:10 AM
Post #7 of 7
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Re: lose of power
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You could be right and the exhaust is good....
How about posting the backpressure readings you took so we can take a look at them?
(This post was edited by Sidom on Jun 17, 2010, 11:10 AM)
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