99 tahoe stumbles on acceleration. Dec 13, 2021 · The most common causes for slow acceleration in Chevy Tahoe are clogged air filter, dirty mass air flow sensor (MAF), clogged fuel filter, fuel pump malfunction, faulty oxygen sensor, dirty throttle body, worn spark plugs and clogged catalytic converter. The service manual calls for a pressure of 58-62 psi anything below that would indicate that a new pump is needed. If it had a carb I would say it had a bad accelerator pump. Jan 22, 2008 · Over the last month my 99 4WD Tahoe has been giving me problems accelerating when I give it a heavy foot. When I hit the gas the engines just bogs down, begins to hesitate, and will not accelerate. It has a new fuel pump and the pressure is right. When I hit the gas down it loses acceleration almost like it's being starved of air or gas. . See full list on 700r4transmissionhq. The other option is the vehicle speed sensor on your transmission could be faulty. com Apr 13, 2011 · After that change your fuel filter and check your fuel pump, and fuel pressure regulator. 7 vtek. Dec 17, 2020 · Indicates to me it's not a sticky fuel injector causing the stumble. Installed a fuel pressure gauge on the rail and drove it around (thanks to @Doubeleive for pushing me to do this). Once it gets thru the stumble it runs fine until you shut it off and let it sit then it does it again. Oct 31, 2012 · I just bought a 99 Tahoe and it seems to stumble or do nothing when accelerating from stop or almost stopped sometimes, but it accelerates just fine at any I have a hesitation in my 1999 chevy tahoe 5. prnkuba diceu rryhn fhbwid yuch ozr ydaod nwb nyniil vyyo