Plymouth Voyager 3.0 Gas not getting past Injectors

RLB64

MEMBER
CHRYSLER GRAND VOYAGER

1994 Plymouth Voyager 3.0l

Van was seemingly starving for fuel during hard acceleration. Accelerating from a stop would cause bucking as if starving for fuel. Cure would be to let off slightly and continue. Slower acceleration would relieve problem temporarily. I have replaced fuel filter (3 weeks ago, coil (replaced 1 month ago (cap, rotor and wires)), and fuel pump (2 week ago). I disabled the fuel regulator with no change in performance. I decided to live with it.

The Van completely quit the other day in what may be an unrelated problem. I have taken off the air take and injectors and found gas in fuel rails on top of injectors. I can pour a little gas in to air take and start vehicle. I am thinking that my injectors are not opening. I put a test light on one injector and this only comes on once when you turn ignition key on. I believe this to be testing the injector circuit. Turning key further to crank engine and the test light on injector does not light. I have received fault codes - 12 (battery recently disconnected). SOMETIMES during my search I have at different times received #11 (no ignition reference signal during cranking (bad hall effect) or timing belt skipped, code #24 (throttle position sensor), and #25 (automatic idle speed (AIS) motor drive circuit shorted. I understand that these faults should not stop the engine from starting. I have also put on another ground wire to make sure the ground is there for this circuit. I do have spark and the motor will run if I pour gas in thru the air intake.

My family loves your web site. Thank you for any help anyone may offer.

1 Reply

RLB64

MEMBER
2 POSTS

Ok, the problem with the bucking under moderate to heavy accleration was thought to be fuel problem. After much thought, I decided on spending $150 on new pump, I replaced the pump.

The bucking problem did not go away. So I drove it like it was. 10 days later the van quits on the way to work. I replaced the fuel pump again (Warrenty) and she runs fine and no bucking. Lesson here is test the I should have tested the pressure on the new pump earlier but did not have the right attachment for Chysler. We riged up another gauge and found the pressure was low. Turned out be the problem was the same bucking (serging) and starving for fuel, and not running days later. Hard to complain about a van with 199,300 miles on it and running great.[Enter][Enter]Thanks again for the help.