NEED HELP...NO inector pulse
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Joined: Jul 2001
Posts: 188
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From: Brick, NJ
Car: 91 TA vert
Engine: 355
Transmission: T5
NEED HELP...NO inector pulse
so earlier today my injector fuse blew...replaced it with the same size fuse...it ran until i shut it off then when i went to start it back up..no injector pulse once again but the fuse is fine....ANY help is much appreciated....with no car i can't work and i need the money...thanks
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Joined: Jul 2001
Posts: 188
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From: Brick, NJ
Car: 91 TA vert
Engine: 355
Transmission: T5
resistance on 7 of the injectors were 1.5 ohms and on cylinder 8's injector.....it was 4.5ohms...so the controller is pushing alot harder to get a signal to the 8th injector.....now i need to make sure each has 12 volts....gee....thanks for the help everyone...? does anyone know where the injectors all become one in the harness?
Last edited by 86irocL98; Aug 7, 2003 at 02:05 PM.
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Joined: Mar 2001
Posts: 323
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From: CLIMAX, GA. USA
Car: 1972 LT1 Corvette
Engine: 350 HO
Transmission: M22 Heavy Duty 4 Spd
Axle/Gears: 336
What you are actually measuring with your ohm meter is the inductive reactance of the solenoid inside the injectors. You should measure 12 volts on both sides of the injectors with key on. The ECM pulls one side to ground to induce current flow through the solenoid. Try unplugging #8 and try cranking. Should crank, but run sh**ty on 7 cylinders. If so, get a new injector. If not, get a new injector and another ECM.
Thread Starter
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Joined: Jul 2001
Posts: 188
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From: Brick, NJ
Car: 91 TA vert
Engine: 355
Transmission: T5
i measured them with the injectors unplugged...i pulled the connectors off and measured from the plug to the fuse block...ill try to start it tonight with the injector unplugged when i get home...thanks for the help...
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Thread Starter
Member
Joined: Jul 2001
Posts: 188
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From: Brick, NJ
Car: 91 TA vert
Engine: 355
Transmission: T5
i measured them with the injectors unplugged...i pulled the connectors off and measured from the plug to the fuse block...ill try to start it tonight with the injector unplugged when i get home...thanks for the help...
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Thread Starter
Member
Joined: Jul 2001
Posts: 188
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From: Brick, NJ
Car: 91 TA vert
Engine: 355
Transmission: T5
so i checked the injectors for 12 volts....and both sides had 12 volts...so i tried changing the distributor pickup....and it started ran and drove...then when i shut it off and went to start it back up....once again it has no injector pulse...
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Member
Joined: Mar 2001
Posts: 323
Likes: 1
From: CLIMAX, GA. USA
Car: 1972 LT1 Corvette
Engine: 350 HO
Transmission: M22 Heavy Duty 4 Spd
Axle/Gears: 336
Sounds like either a faulty ECM or the ignition module in the distributor (is that what you are calling the pickup).
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From: Oakdale, Ca
Car: 89 IrocZ
Engine: L98-ish
Transmission: 700R4
Just for clarity...
Unplug an injector.
Measure resistance on the injector..NOT the plug.
What's the reading?
Do this to all 8 and post....*seems* to me you're reading the plug side, not the injector.
Unplug an injector.
Measure resistance on the injector..NOT the plug.
What's the reading?
Do this to all 8 and post....*seems* to me you're reading the plug side, not the injector.
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