I have a 99 Tahoe 350 at 115.***. It has a hard time starting but when it dose start for the day it has no problems until you let it sit overnight. I've replaced the starter, coil, timing chain, crank sensor, coil pickup sensor, fuel filter. I hook a fuel gauge up it's a 60psi with key on then drops to around 55psi while cranking then slowly drops to 0 over time. Any ideas on what it could be
1999 Tahoe no start
- Thread starter Bcrego09
- Start date
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1999 Z56 PPV
TYF Newbie
my Tahoe won't start now also...guess I should replace everything you did
Monstar_est87
Full Access Member
Hows the battery..? Is it cranking just not turning over..? Or just not cranking..? Check out ur distributor cap, along with the wires and plugs...
1999 Z56 PPV
TYF Newbie
mine is cranking but the spark is not strong...probably have to replace plugs , wires , and cap...
SunlitComet
OBS Jedi-Do Good
when and how and under what conditions does the pressure drop to zero?
http://www.sunlitcomet.com/pdf/auto...99 yukon-tahoe-5.7l-fuel-pressure-testing.pdf
http://www.sunlitcomet.com/pdf/auto...99 yukon-tahoe-5.7l-fuel-pressure-testing.pdf
Well the battery is new. And as far as fuel pressure goes with the key on it holds 60psi when the key is of it holds between 50-60 psi for about five minutes or so and slowly drops down to zero over the corse of about 5 hours. An it cranks but won't turn over but when I let off it try's to run.
JEZSANCHEZ
TYF Newbie
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did you check the fuel pressure regulator I had that problem with mine 2 door Tahoe and it was the same problems like your it cost me 60 bucks for the fix
retorq
Full Access Member
If you are going to pirate everyone else's work you should at-least take their copyright off it.
did you check the fuel pressure regulator I had that problem with mine 2 door Tahoe and it was the same problems like your it cost me 60 bucks for the fix
this.
it should have been the first thing you replaced after you got the pressure tested and had results like that.
Dillonv2008
Member
Fuel pump probly going bad doesn't have enough pressure to prime the system. At start
