Engine HELP
06-30-2009, 10:48 PM
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Engine HELP
I have an 02 scsb with 95000 miles on it now, and its starting to spit and sputter when you give it around half throttle off the line. Also makes a poping noise at shift points above 3000 rpm. Feels like it has lost a lot of power especially in the bottom end, spinning the tires is about impossible now. I replaced the wires about 5000 miles ago with granatellis. I think its an ignition or fuel problem, anyone have any similiar problems or possible solutions??? No codes poping up either. THANKS!
06-30-2009, 10:59 PM
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I had pepboys replace it about 6months cause I didnt have any choice when it totally died on me. I took it back to them about a month ago and said the pressure was fine. How would I go about checking it myself?
-it also seems to be worse when the truck has been running for a long time
-it also seems to be worse when the truck has been running for a long time
07-01-2009, 11:33 AM
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I replaced the filter a couple months ago it helped a little but not much, how do you determine which converter is clogged? I know there is a few of them
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07-01-2009, 05:42 PM
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The proper way to check is measure backpressure. Remove the front O2 sensors, and use an exhaust backpressure test gauge. IIRC you want less than 3 lbs backpressure at 3000 rpm. Check with your local parts store to rent a tool, unless you have a buddy with one.
07-01-2009, 08:48 PM
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I have a K&N 77 series and E3 plugs so I would guess those are ok. I will test for backpressure when ever I have a day off work. Thanks for the info AK, the cats are still stock so Im thinking you are probably right, do you like the hi flo magnaflow cats?