Having problems with your 2000 Oldsmobile Bravada ?

2000 Bravada hesitates when starting frm a stopped position.

\015 My mechanic looked at it and said nothing showed up so he cleaned the throttle body, but problem is still there.\015 Posted / edited by AnonymousUser on : 13-07-2020

Answers :

You probably have this fixed, but I'm posting for other searchers in the future. Open your throttle body and use an inspection mirror...one that extends and swivels. position the mirror so it looks up and to the rear on the inside of the throttle body. Have some one turn ignition to run ( NOT START ) and see if the fuel pressure regulator is leaking. You will smell a strong fuel odor too. Symptoms of this are good fuel pressures, but bleeding off slowly. You will see a drip with a good flashlight and the right positioning of the inspection mirror. Also, you might have a strong fuel smell from the rear of the vehicle at the evap canister. The canister is drawing the fumes from the intake where it's leaking.
Get your hands on a fuel pressure tester.. this will tell u if u are losing fuel pressure between starts... those 4.3 v6's have a big problem with the poppet valve (injector assembly) leaking. causing the engine to flood...and losing pressure to push threw the injector... causing the hard start...but the fuel pump module will also lose pressure as has a check valve to keep that from happening but from time to time they do leak allowing fuel to flow back into the tank...with this pressure tester, have a friend turn the key to on.. after you hear the fuel pump shut off immediately pinch off the two fuel lines going from the tank to engine you can find these right below the driver side door. you will find the fuel filter there which is the pressure hose the other hoseis the return... both rubber hoses that will not be harmed by the vise grips or tools be your choice the other metal line is a vapor line which is not important. after you do pinch the lines off check the fuel pressure if it still drops with no signs of slowing down then the poppet valve is defective...if it does not move then you know it is definitely the fuel pump module (fuel pump assembly)
Repair Help & Product Troubleshooting for 2000 Oldsmobile Bravada

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