1999 Chevrolet Venture Misses through out driving range

1999 CHEVROLET VENTURE
105,000 MILES • 3.4L • 6 CYL • FWD • AUTOMATIC
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RIFLEMAN
  • MEMBER
  • 12 POSTS
The van misses out, like a cylinder not firing. I have no codes at this time. I replaced the cam sensor due to a miss fire code. This was the last thing I did and now it runs worse then it did before I changed it. Let me give you some details: I have had a miss fire code for some time now and this is what I have replaced before replacing the cam sensor. Replaced coil pack, replaced wires and plugs, replaced EGR valve, replaced intake gaskets upper and lower( They were bad anyways) tested injectors: right at 11 ohms on each, with new O rings. New air filter, cleaned Mass air flow with electronic cleaner, New TPS and IAC valves. Replace all evap equipment (Due to evap code). This is a 3.4L Chevy Engine. This also idles kind of rough at sometimes, it idle rough all the time before I replaced the cam sensor now it just does it sometime. When I take off from a stop it bogs and pops. Can you HELP? I'm about to dump this thing in lake Michigan! ( Not Really!) That's what I fell like where it belongs! Thanks
Jun 8, 2014 at 6:42 AM
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HMAC300
  • ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
misfires are really hard to diagnose. if you didn't get any codes then thee may be something wrong with the connector. to save yourself some money take to a pro and let him fix it. because he needs to see what sensor is screwing up.
Jun 8, 2014 at 7:52 AM
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