Question about 1998 GMC Sierra
I have a 1998 GMC 5.7 K1500 and always act as if it is not getting enough fuel. When I am on the highway doing between 60 and 70 miles per hour it acts like the motor is starved for fuel until it goes into passing gear, after being @ 3000 rpm for a second or two, it takes off like ive put a shot of nos to it, once it kicks back down into drive (2000rpm) and the RPM's settle... i have reserve power for a mile or two and the whole problem starts over again .... all this in repitition .
Sounds like it is starving for fuel...the other guys sound right...check your fuel filter and fuel pressure...if the filter is nearly stopped up the pump would build pressure which would "push" past the filter and make it feel more powerful...then as the pressure drops it starts to starve again until the pressure builds up enough. Also, with the vehicle parked and running, get someone to rev it up while you feel the air coming out of the exhaust...if it isn't a good amount of pressure coming out of the tailpipe, your converter may be stopping up. be careful not to get burned by the exhaust though.
Posted on Mar 13, 2009
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Posted on Jan 02, 2017
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