new HEI mod pick up coil & ECM coil & wires ok replaced coil to distibuter wires EST wire good no shorts have power to injectors, reference wire good no shorts by pass wire good no shorts injector wire to ECM good no shorts
Have beat head against wall for two weeks help
2007-03-21 11:54:34 · 6 answers · asked by J L 2 in Cars & Transportation ➔ Maintenance & Repairs
check to see if the distributor gear is stripped. check to see if the coil is getting power. check your grounds..i have ran into this before and it could be something so simple it was just overlooked. i am working on 84 GMC S15 right now.
2007-03-21 12:05:17 · answer #1 · answered by Anonymous · 0⤊ 0⤋
This is assuming the engine is a 4.3L - V6
Check that you have power going to the distributor cap.
Remove the Plug that says Bat. With a test light, check for power.
If there is power to the distributor, & you say you replaced the coil in the cap. Check that electrode from the coil to the rotor is there. All checks OK remove the wire to the module in the base of the distributor. I've seen the wires corrode & in some cases break.
If wires appear OK, then replace the module & recheck.
If the engine has lots of miles on it, while the cap is off, place a socket on the crankshaft & rock the engine back & forth. This is to check the amount of slack in the cam chain & if the rotor is turning. If the rotor is not turning, then replace your cam chain.
Good Luck
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2007-03-21 12:11:45 · answer #2 · answered by Mr. T 7 · 0⤊ 0⤋
a 4.3 is in basic terms a 350 with 2 of its balls chopped off! the only good 4.3 they geared up became with a rapid. i might the two leave the inventory in-line 4 for financial equipment, or squeeze interior the nastiest small block i ought to(383 or greater). it may be cool to put in an emissions criminal camaro or vette 350 and save it highway criminal. Even greater advantageous may be an ls2.
2016-10-01 07:21:08 · answer #3 · answered by ? 4 · 0⤊ 0⤋
Make sure your auto shutdown relay is not stuck, or not getting correct power and ground, if it is malfunctioning, it will cut your ignition power if I remember right.... been a few years since I worked on regular auto.
2007-03-21 12:36:01 · answer #4 · answered by radiografik1 1 · 0⤊ 0⤋
what about the crank sensor?i was going to say starter,but you said it cranked good.you could check the rotor,to see if it turns and check the crank sensor.sorry i couldnt be more help to you.
2007-03-21 14:35:13 · answer #5 · answered by Anonymous · 0⤊ 0⤋
it likelly ,to be the module.(if You don't have a missing rotor or broke distributor cap.)
2007-03-21 13:23:27 · answer #6 · answered by Anonymous · 0⤊ 0⤋