2006-08-06 10:56:18 · 7 answers · asked by deborah g 1 in Cars & Transportation ➔ Maintenance & Repairs
Welcome...
More information would be helpfull.
Why did you replace fuel pump?
Did you check the fuses under the dash.
Does it start? How long will it run?
When did you start having this problem, and what happened just before to cause the problem?
The more information you give, the more informed answer you will get.
Have a great day..
2006-08-06 11:08:46 · answer #1 · answered by Mr. KnowItAll 7 · 0⤊ 0⤋
If you change the fuel pump, and fuel delivery is ok, check ignition. There are three major things that make any car start. You must have fuel, spark, and air. Check fuel delivery by turning the key on, then go to the fuel injector rail and press the fuel check button that should be on the rail itself. It looks like a little needle in the center. If fuel comes, then the pump is working. Okay, spark. Pull the wire for the first spark plug. Put a screw driver inside the spark plug wire end, and put it close to the body of the car and see if there is a spark by having someone else crank the car. Make sure you don't touch the screwdriver or the wire while cranking! If you see spark, then you have spark. Now air. Make sure the air filter is not clogged. Your van should start, if not check your fuses and you will see behing the cover labled fuses for the ignition and fuel pump or ecm. It is always helpful to check all of the fuses. Good luck and be careful.
2006-08-06 11:35:58 · answer #2 · answered by fawaz a 1 · 0⤊ 0⤋
You didn't say if the replacement pump is pressurizing the fuel system. If not look for a grounding problem. With all the plastic in cars today, a proper ground is not always simple. If it is pressurizing your system then it might be a fuel pressure regulator. There could also be bad signal to the injector(s) causing them to pass less fuel. This could lead to the control computer or to one or more sensors being bad or also a bad throttle air bypass valve. Answer each of the three legs of ignition when troubleshooting...fuel, air and spark. In following these you will usually find the problem.
2006-08-06 11:10:41 · answer #3 · answered by Tony the Pony 1 · 0⤊ 0⤋
i didn`t know gmc safari`s came with a 6 liter. i always thought they were 4.3 liter engines. anyway, attach a pressure gauge to the schrader valve and turn the key to the on position,(engine off), if the pressure stays around 55-61 psi you are okay ( 9-13 psi if you have a tbi unit.) if the pressure falls off then your injector unit is at fault and is expensive to replace. have a reputable shop do an extensive fuel system diagnosis. if the fuel system is okay then your problem is elsewhere. good luck.
2006-08-06 12:11:53 · answer #4 · answered by the real spooky!!!!!!! 2 · 0⤊ 0⤋
If you have changed the fuel pump, changed the fuel filter or filters, checked the lines for leaks, then go to the cam position sensor. Hopefully, this will solve your problem.
2006-08-06 11:05:30 · answer #5 · answered by jmiller 5 · 0⤊ 0⤋
If it's got carburetion, clean out the carb, check out your emissions stuff, EGR valve and so forth. If you can't figure it out in a reasonable amount of time, have it towed to a shop, and they can get you back on the road probably in an hour...
2006-08-06 12:18:14 · answer #6 · answered by gokart121 6 · 0⤊ 0⤋
check your electronic control module in your distributor or it could possibly be a computer problem. i would try ecm first.
2006-08-06 16:25:07 · answer #7 · answered by budweiser_8_chevrolet 1 · 0⤊ 0⤋