At a loss, no fuel/spark
10-07-15, 09:33 AM
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At a loss, no fuel/spark
I've tried everything.
New fuel pump/strainer/filter. Gas been sitting for a long time. Clean tank. Getting fuel coming out the feed line by the dipstick. Good pressure.
Crank sensor resistance measured on 2000 ohm setting
1) @ 1135 ohms (1.135k)
2) @ 1145 ohms (1.145k)
So, those are good. Cleaned off the surfaces with scotch brite pad for good measure
Checked continuity between ECU and:
NE signal - .007 ohm
G signal - .006 ohm
Ground (I'm guessing it's ground, each measure at the same pin on ECU) .007 ohm
Map sensor - .007 ohm
Igniter - .007 ohm
Circuit opening relay - .007 ohm
Coils show good. All within specs.
Wires show good. If I remember right, 3 were close to 2.42 and one was close to 3, setting on 20k. 16.3k per meter rated resistance.
Fuel injectors good. All within spec.
Ignition on, I'm not getting any voltage at the coils. Replaced Igniter, still nothing.
So I checked continuity on each wire coming out/in to igniter to the each coil. .007 ohm except one was at 1.0 ohm on a trailing coil.
From what I'm seeing here, this damn thing should crank up and run. However, there is one BIG thing I'm missing. Even though I could show continuity to the pins on the ECU, the ECU could still be bad. What are your thoughts?
Thanks for any help guys....
New fuel pump/strainer/filter. Gas been sitting for a long time. Clean tank. Getting fuel coming out the feed line by the dipstick. Good pressure.
Crank sensor resistance measured on 2000 ohm setting
1) @ 1135 ohms (1.135k)
2) @ 1145 ohms (1.145k)
So, those are good. Cleaned off the surfaces with scotch brite pad for good measure
Checked continuity between ECU and:
NE signal - .007 ohm
G signal - .006 ohm
Ground (I'm guessing it's ground, each measure at the same pin on ECU) .007 ohm
Map sensor - .007 ohm
Igniter - .007 ohm
Circuit opening relay - .007 ohm
Coils show good. All within specs.
Wires show good. If I remember right, 3 were close to 2.42 and one was close to 3, setting on 20k. 16.3k per meter rated resistance.
Fuel injectors good. All within spec.
Ignition on, I'm not getting any voltage at the coils. Replaced Igniter, still nothing.
So I checked continuity on each wire coming out/in to igniter to the each coil. .007 ohm except one was at 1.0 ohm on a trailing coil.
From what I'm seeing here, this damn thing should crank up and run. However, there is one BIG thing I'm missing. Even though I could show continuity to the pins on the ECU, the ECU could still be bad. What are your thoughts?
Thanks for any help guys....
Last edited by whinin; 10-07-15 at 09:42 AM.
10-07-15, 02:16 PM
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Location: Aurora, CO
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I've tried everything.
New fuel pump/strainer/filter. Gas been sitting for a long time. Clean tank. Getting fuel coming out the feed line by the dipstick. Good pressure.
Crank sensor resistance measured on 2000 ohm setting
1) @ 1135 ohms (1.135k)
2) @ 1145 ohms (1.145k)
So, those are good. Cleaned off the surfaces with scotch brite pad for good measure
Checked continuity between ECU and:
NE signal - .007 ohm
G signal - .006 ohm
Ground (I'm guessing it's ground, each measure at the same pin on ECU) .007 ohm
Map sensor - .007 ohm
Igniter - .007 ohm
Circuit opening relay - .007 ohm
Coils show good. All within specs.
Wires show good. If I remember right, 3 were close to 2.42 and one was close to 3, setting on 20k. 16.3k per meter rated resistance.
Fuel injectors good. All within spec.
Ignition on, I'm not getting any voltage at the coils. Replaced Igniter, still nothing.
So I checked continuity on each wire coming out/in to igniter to the each coil. .007 ohm except one was at 1.0 ohm on a trailing coil.
From what I'm seeing here, this damn thing should crank up and run. However, there is one BIG thing I'm missing. Even though I could show continuity to the pins on the ECU, the ECU could still be bad. What are your thoughts?
Thanks for any help guys....
New fuel pump/strainer/filter. Gas been sitting for a long time. Clean tank. Getting fuel coming out the feed line by the dipstick. Good pressure.
Crank sensor resistance measured on 2000 ohm setting
1) @ 1135 ohms (1.135k)
2) @ 1145 ohms (1.145k)
So, those are good. Cleaned off the surfaces with scotch brite pad for good measure
Checked continuity between ECU and:
NE signal - .007 ohm
G signal - .006 ohm
Ground (I'm guessing it's ground, each measure at the same pin on ECU) .007 ohm
Map sensor - .007 ohm
Igniter - .007 ohm
Circuit opening relay - .007 ohm
Coils show good. All within specs.
Wires show good. If I remember right, 3 were close to 2.42 and one was close to 3, setting on 20k. 16.3k per meter rated resistance.
Fuel injectors good. All within spec.
Ignition on, I'm not getting any voltage at the coils. Replaced Igniter, still nothing.
So I checked continuity on each wire coming out/in to igniter to the each coil. .007 ohm except one was at 1.0 ohm on a trailing coil.
From what I'm seeing here, this damn thing should crank up and run. However, there is one BIG thing I'm missing. Even though I could show continuity to the pins on the ECU, the ECU could still be bad. What are your thoughts?
Thanks for any help guys....
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