My 99 mountaineer fuel reset light comes on truck wont start

SOURCE: just changed fuel line and truck wont start now

there is air in the lines you will need to bleed them out first crack (take loose) the line comming into the injection pump and crank the motor over for a bit this will cause the lift pump to force the air out of that line tighten up when no bubles come out then repeat on injector lines to purge air out of the injection pump this should solve your problems

SOURCE: 99 chevy blazer start truck fine then next time go

Fuel pump relay sound bad. Under the hood in the fuse box is the location of the relay. Look under the cover for the diagram to locate it faster. Hope this helps. Please keep me posted. Good luck

SOURCE: truck wont start already change fuel filter

when you turn the key on you should hear a humming or whinning noise coming from the fuel tank if not,then its your fuel pump which is a very common problem

SOURCE: 99 olds alero; fuel pump and inst. panel isn't getting power

fuel shutoff switch is actually a fuel pump relay in the relay box under the hood, but it is not unusual for a fuel pump to work on and off before it finally dies. but it is a good idea to check the relay first.

try swapping it with the horn relay (if the horn works). pay attention to the direction the relay is in. on GM's, it's possible to put them in backward or even miss the connectors completely.

you also want to check for proper power and ground in the relay socket.

SOURCE: truck wont start

Check all the fuse. The reason why the scanner wont read is probably the computer is not getting power.