won't start
Thread Starter
Member
Joined: May 2005
Posts: 140
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From: Maple Ridge, B.C., Canada
Car: '89 Iroc Vert
Engine: 355 TPI
Transmission: T-5(for now)
Axle/Gears: 3.45 9 Bolt
won't start
cranks fine, tons of fuel pressure,
no spark, and injectors aren't firing,
have tried different ECM and proms, my scanner hooks up and logs fine,
no codes, non vats car
88 TPI,
any where I should look thanks?
no spark, and injectors aren't firing,
have tried different ECM and proms, my scanner hooks up and logs fine,
no codes, non vats car
88 TPI,
any where I should look thanks?
Thread Starter
Member
Joined: May 2005
Posts: 140
Likes: 0
From: Maple Ridge, B.C., Canada
Car: '89 Iroc Vert
Engine: 355 TPI
Transmission: T-5(for now)
Axle/Gears: 3.45 9 Bolt
also ECM is getting all required grounds and powers,
and its intermitent,
sometimes its starts but runs rough until warm
and its intermitent,
sometimes its starts but runs rough until warm
Thread Starter
Member
Joined: May 2005
Posts: 140
Likes: 0
From: Maple Ridge, B.C., Canada
Car: '89 Iroc Vert
Engine: 355 TPI
Transmission: T-5(for now)
Axle/Gears: 3.45 9 Bolt
sorry when it doesn't start, it has no spark and the injectors don't fire
when it does it has spark and the injectors fire fine,
I got an inline spark tester on it and a noid light,
example today, its my bros car btw
my bro was cranking I was watching spark tester and noid light, niether would light up,
went inside and printed some schematics off the computer came out, checked again, he cranked, noid light and spark tester both lighted up, and it fired up, worked fine, but now its not firing again
when it does it has spark and the injectors fire fine,
I got an inline spark tester on it and a noid light,
example today, its my bros car btw
my bro was cranking I was watching spark tester and noid light, niether would light up,
went inside and printed some schematics off the computer came out, checked again, he cranked, noid light and spark tester both lighted up, and it fired up, worked fine, but now its not firing again
Thread Starter
Member
Joined: May 2005
Posts: 140
Likes: 0
From: Maple Ridge, B.C., Canada
Car: '89 Iroc Vert
Engine: 355 TPI
Transmission: T-5(for now)
Axle/Gears: 3.45 9 Bolt
I'm really stumped on this 1,
does anybody know what conditions have to be met for TPI to fire fuel and spark?
does the ecm need to see a distributor signal to fire the injectors?
I'm thinking its distributor related cause it should create sprak no matter what the ECM is doing, no?
and if the distributor isn't getting a reference the ecm wouldn't sense rpm, and not fire the injectors?
I'm just knid of grasping at straws here and I don't have the proper test equipment to check if the distributor is working correctly,
any help would be great
does anybody know what conditions have to be met for TPI to fire fuel and spark?
does the ecm need to see a distributor signal to fire the injectors?
I'm thinking its distributor related cause it should create sprak no matter what the ECM is doing, no?
and if the distributor isn't getting a reference the ecm wouldn't sense rpm, and not fire the injectors?
I'm just knid of grasping at straws here and I don't have the proper test equipment to check if the distributor is working correctly,
any help would be great
Senior Member
iTrader: (1)
Joined: Nov 2006
Posts: 830
Likes: 0
From: Victoria BC Canada
Car: 87 Camaro IROC
Engine: 305 TPI
Transmission: 700r4
Axle/Gears: 3.23
if you turn your key to the ON position, your pump will come on for like 5 seconds then shut off (unless you start the engine) just to prime to injectors. when you turn your key to ON, does the pump come on for 5 secs? mayb its an ignition switch.
Thread Starter
Member
Joined: May 2005
Posts: 140
Likes: 0
From: Maple Ridge, B.C., Canada
Car: '89 Iroc Vert
Engine: 355 TPI
Transmission: T-5(for now)
Axle/Gears: 3.45 9 Bolt
yes, fuel pressure is fine, with a noid light on, the injectors aren't firing,
I also have no spark,
fuel pump is fine, it was replaced with a performance 1 last year, fuel system is up to par, motor/car are built for nitrous, haven't put the bottle on it yet
seems like 1 problem after the next with this thing
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Junior Member

Joined: Apr 2004
Posts: 66
Likes: 4
From: winthrop harbor
Car: 88 gta
Engine: 5.7
Transmission: 700r4 with 2400 stall
Axle/Gears: 9 bolt 3.23
When you had this problem did you haven a SES light or was it off,mine's kinda doing the same thing as you described .I just replaced the module and had spark but I still have no inj. pulse
Joe
Joe
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