4000rpm hesitation
10-17-2012, 10:03 PM
#1
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4000rpm hesitation So it seems like everytime I hit 4000rpm I feel a slight hesitation. Almost like a miss im not sure. It feels like im losing power for a split second once I hit 4000rpm. Once it hits 4000 alittle hickup then would continue fine above the RPM range then once at 5000-5200 same thing. Any Ideas? Brand new Opti, Water pump seals, Oil pan gaskets brand new have been on the car for a month now.
10-18-2012, 06:30 AM
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What brand opti is it? could have been bad from the factory.
Check the basics, plug wires, plugs, vacuum lines. Make sure all of the wires have a good connection to the plugs.
Maybe a bad injector, but not likely. Check for 12v to the injector connections.
Check the basics, plug wires, plugs, vacuum lines. Make sure all of the wires have a good connection to the plugs.
Maybe a bad injector, but not likely. Check for 12v to the injector connections.
10-18-2012, 03:56 PM
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The Opti is an AC-Delco, Brand new delco wires, all vacuum lines seem to be fine. Brand new interstate battery. Ill test the injectors but I use Lucas oil fuel treatment every oil change. If it isnt the injectors what else possibly could it be? Thanks
10-18-2012, 05:45 PM
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What are your plugs gapped at? Are all the plugs tight in the head? Got a good heat sink on the ICM? All the plug wires seated correctly on the plugs? How's the coil? How old is the fuel filter? Whats fuel pressure under a load?
