94 grand cherokee mystery

[mcgrnr0013]

i have a 94 grand cherokee laredo with the v8, the other day i was drivin and it just quit and wouldnt crank back up, i've checked everything, injectors fuel filter fuel pump distributor spark plugs and wires, it turns over and sounds like its firing on one or two cylinders but wont run, unless you pour a little gas in the throttle body then it will idle (roughly) someone please help if you can...

 

[awigley]

Have you checked to make sure it has the right amount of fuel pressure?

 

[mcgrnr0013]

Have you checked to make sure it has the right amount of fuel pressure?

i attempted too with some old gauges but couldnt remeber how to work them properly, it may not have had any pressure. think it may be the regulator???

 

[carnuck]

Try the fuel pump relay first.

 

[awigley]

if it is like my 99 cherokee, there are also 2 relays marked asd (auto shut down) under the hood. I had one of those go bad it shut down my fuel pump.

 

[mcgrnr0013]

if it is like my 99 cherokee, there are also 2 relays marked asd (auto shut down) under the hood. I had one of those go bad it shut down my fuel pump.

i got it to run by blowing some air into the vacuum hole on the pressure regulator and figured out the gauges and its reading around 25 psi (i think its supposed to have between 33-35) it will idle and run but is missing pretty badly.

 

[carnuck]

Clogged fuel filter?