quit while driving no spark no fuel to carb.replaced coil,dist mod,computer also checked fuses....NEXT?
2006-10-22 10:44:44 · 5 answers · asked by chiperadis 1 in Cars & Transportation ➔ Maintenance & Repairs
91 does NOT have a Carburetor. It's Fuel injected.
It could be the Distributor Pickup coil.
If it isn't working, you'll get NO spark and the Injectors will not pulse Fuel . It is needed for both to operate.
Been an ASE Master Tech since 1975
2006-10-22 10:51:23 · answer #1 · answered by Gordon B 5 · 0⤊ 0⤋
If you did all that and still nothing you have a broken wire or a wire off a terminal somewhere in the ignition circuit. Take a test light and see if you have voltage to the distributor, coil, and fuel pump. Check all the wires on the starter, as it's part of the ignition circuit. Generally, the ICM causes the spark problem but that would not account for the electric fuel pump! I would definitely start checking for voltage! May also have a fuseable link which melted. TBI used a fuse for their injectors too. Recheck because GM fuses can be tricky if you are not using a testor. You stae carburator but that would have been a replacement installation as 91 had TBI.
2006-10-22 11:04:28 · answer #2 · answered by Anonymous · 0⤊ 0⤋
You should of have checked the fuel filter and fuel pump first. Remove fuel filter and try to blow though it if pluged -change. While the filter is off turn key to on position and see if the fuel pump is working. Some fuel should come out in this proceedure. If not then the problem is your fuel pump.
2006-10-22 11:21:09 · answer #3 · answered by Anonymous · 0⤊ 0⤋
i own a repair shop,and i think you might have went around this problem, i think it might be the ignition switch on it, i have a 91 suburban working on it now that did the same thing,and it was the ignition switch that went out on it,it basically killed everything that was important to the vehicle to run,you need to check and see if you have voltage going to the coil ,and the fuel pump,,,you may have the same problem i just got done repairing,good luck with it i hope this help,s,if it don't help ,i may be able to solve it for you,i have done this for 36 yrs,good luck
2006-10-22 11:03:24 · answer #4 · answered by dodge man 7 · 0⤊ 0⤋
WELL IF IT WERE ME I WOULD CHECK THE CRANK ANGLE SENSOR AND THE CAM SENSOR THE 5.7 ALSO HAS A KNOCK SENSOR THAT COULD CAUSE A PROBLEM, BUT SOUNDS MORE LIKE TH CRANK OR CAM SENSOR.
2006-10-22 11:17:41 · answer #5 · answered by jacks5j 3 · 0⤊ 1⤋