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04-07-2015, 04:34 PM | #1 | |
AF Newbie
Join Date: Nov 2011
Location: Warner Robins, Georgia
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1996 4.0 wont rev past 1500RPM at a loss
1996 4.0.
its been about a year since it all began and has not been on road since, it started wit o2 codes, would drive fine till engine got hot than had loss of power backfire replace o2 sensors. plugs wires water pump ac compressor and air filter were already needed to be replaced. fuel filter was bad and fuel pump at 25psi replaced with new.will rev over 1500 in park but when in drive will get up to 1500 start to bog between 1300-1500 with pedal floored replaced or checked- AC Delco spark plug wires AC Delco spark plugs fuel filter BOSCH Oxygen sensor B1S1,B2S1,B2S2 water pump AC compressor air filter ac delco fuel pump fuel pressure tested at 42psi(not at 48-55 required) did test on fuel pressure regulator and psi jumped up about 10 which was said that it was good and no fuel in vac line tested MAF sensor with unplugging it can car began to sputter no vac leaks took cat off anti backfire valve |
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