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cant read aldl when jumpered

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Old Aug 20, 2010 | 07:07 PM
  #1  
WILL85IROC's Avatar
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From: PITTSBURGH, PA
Car: 85 IROC-Z Z-28, BLUE & SILVER
Engine: 5.7L & 5.0L
Transmission: 700R4
Axle/Gears: FACTORY
cant read aldl when jumpered

still having problems getting my car to run, wont start now. i tried to jmpr the 'a' and 'b' terms of the aldl but nothing comes on...??? i have the key in but car not on, only light that comes on is brake light (red)... i checked all the fuses under the column (about 10 or 11) , any other fuses or relays to check that maybe defective??? thnx
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Old Aug 20, 2010 | 07:14 PM
  #2  
camaronewbie's Avatar
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Joined: Sep 2002
Posts: 9,192
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From: Cary, North Carolina
Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Re: cant read aldl when jumpered

turn key to on position (not start, just on), the SES light should start blinking (unless the bulb is blown).
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Old Aug 20, 2010 | 07:26 PM
  #3  
WILL85IROC's Avatar
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Joined: Sep 2004
Posts: 952
Likes: 6
From: PITTSBURGH, PA
Car: 85 IROC-Z Z-28, BLUE & SILVER
Engine: 5.7L & 5.0L
Transmission: 700R4
Axle/Gears: FACTORY
Re: cant read aldl when jumpered

yes, the key is turned to on (not the run engine pos) and onl y lite i see is the ebrake lite on
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Old Aug 23, 2010 | 10:22 AM
  #4  
NINÅ's Avatar
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Joined: Jan 2006
Posts: 3,341
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From: Mooresville NC
Car: LOWERED ♦ CRIMSON METALFLAKE
Engine: ► 400 KUBES ◄
Transmission: 765R4
Axle/Gears: EATON POSI 4.56
The Check’s In The Mail - Errrrr Light

With the ignition OFF disconnect the ECM.

Using a fused jumper
(1 amp is good) ground pin A5 of the connector (not the ECM).

Now, turn the key to the RUN position.

Does the
Service Engine Soon light come on now?


Happy Racing!



Engines Run Best Right Before They Blow Up

.

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Old Aug 23, 2010 | 10:31 AM
  #5  
WILL85IROC's Avatar
Thread Starter
Senior Member
 
Joined: Sep 2004
Posts: 952
Likes: 6
From: PITTSBURGH, PA
Car: 85 IROC-Z Z-28, BLUE & SILVER
Engine: 5.7L & 5.0L
Transmission: 700R4
Axle/Gears: FACTORY
Re: cant read aldl when jumpered

i can try it when i get off work, thnx... any idea why it wont work withe ecm plugged in?? getting pissed, cant understand why nothing is working right and stuff failing... i mean i drove the car for a month ,let it for a few months and now problems. starter went, alt went, wont start, no code.... llooks like ill being doing a grnd resto alot earlier than i wanted to....
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Old Aug 23, 2010 | 12:56 PM
  #6  
NINÅ's Avatar
Supreme Member
 
Joined: Jan 2006
Posts: 3,341
Likes: 10
From: Mooresville NC
Car: LOWERED ♦ CRIMSON METALFLAKE
Engine: ► 400 KUBES ◄
Transmission: 765R4
Axle/Gears: EATON POSI 4.56
The Check’s In The Mail - Errrrr Light

any idea why it wont work withe ecm
First you have to find IF it will light before assuming it’s the ECM that’s causing it not to light.


Happy Racing!



Engines Run Best Right Before They Blow Up

.

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Old Aug 23, 2010 | 01:28 PM
  #7  
WILL85IROC's Avatar
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Joined: Sep 2004
Posts: 952
Likes: 6
From: PITTSBURGH, PA
Car: 85 IROC-Z Z-28, BLUE & SILVER
Engine: 5.7L & 5.0L
Transmission: 700R4
Axle/Gears: FACTORY
Re: cant read aldl when jumpered

could it be a def ecm???
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Old Aug 24, 2010 | 09:15 AM
  #8  
NINÅ's Avatar
Supreme Member
 
Joined: Jan 2006
Posts: 3,341
Likes: 10
From: Mooresville NC
Car: LOWERED ♦ CRIMSON METALFLAKE
Engine: ► 400 KUBES ◄
Transmission: 765R4
Axle/Gears: EATON POSI 4.56
The Check’s In The Mail - Errrrr Light

Yes it can.

If the
Service Engine Soon lights when the test in post #4 is performed, it means the ECM is defective, or there is a bad connection going to it.


Happy Racing!



I Didn’t Jump The Start, The Flagman Was Late

.

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Old Oct 31, 2010 | 05:54 PM
  #9  
WILL85IROC's Avatar
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Senior Member
 
Joined: Sep 2004
Posts: 952
Likes: 6
From: PITTSBURGH, PA
Car: 85 IROC-Z Z-28, BLUE & SILVER
Engine: 5.7L & 5.0L
Transmission: 700R4
Axle/Gears: FACTORY
Re: cant read aldl when jumpered

havent disconnected the ecm yet, but heres what i did:
1. found out check engine light was blown, changed it and it works now
2. bought $30 code reader from pepboys, obd1 (its flashes the lite for u)
3. put key in start pos, not run and lights just stays on and doesnt flash
4. the manual and books says it should flash 12 when normal
5. check ecm 10a fuse on drivers side pnl under dash
6. tried to jmpr aldl with wire and nothing , lites just stays on
7. visually inspected ecm...
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Old Oct 31, 2010 | 05:58 PM
  #10  
WILL85IROC's Avatar
Thread Starter
Senior Member
 
Joined: Sep 2004
Posts: 952
Likes: 6
From: PITTSBURGH, PA
Car: 85 IROC-Z Z-28, BLUE & SILVER
Engine: 5.7L & 5.0L
Transmission: 700R4
Axle/Gears: FACTORY
Re: cant read aldl when jumpered

a friend of mine let me borrow a fpg but the end broke so i cant check pressure... ill buy one tomorrow...
im still getting the same thing from m y car and cant read the codes.
it just cranks and cranks but doesnt turn over. if i continue to crank nothing will happen, i just here the starter clicking like mad...
i did check for spark with a screw driver near plug and got zapped, ...
i also put m y truck battery in just incase the new battery i bought was drained... and heres the wierd thing... the car drains battery while im troubleshooting... its happened 3 times, when i put my truck battery back i have to get a jmp cuz its not strong enough so something is also killing battery....
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Old Oct 31, 2010 | 06:02 PM
  #11  
WILL85IROC's Avatar
Thread Starter
Senior Member
 
Joined: Sep 2004
Posts: 952
Likes: 6
From: PITTSBURGH, PA
Car: 85 IROC-Z Z-28, BLUE & SILVER
Engine: 5.7L & 5.0L
Transmission: 700R4
Axle/Gears: FACTORY
Re: cant read aldl when jumpered

heres what i will do this week:
1. disco ecm like in post #4
2. check fuel pressure
3. swap ecm with my other 85'
4. maybe check spark on another plug
5. disco radio, lites, etc to see where drainage is coming from
any other suggestions would help.... im still trying to find a shop that is willing to work on our cars here in pittsburgh, pa
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Old Oct 31, 2010 | 06:05 PM
  #12  
WILL85IROC's Avatar
Thread Starter
Senior Member
 
Joined: Sep 2004
Posts: 952
Likes: 6
From: PITTSBURGH, PA
Car: 85 IROC-Z Z-28, BLUE & SILVER
Engine: 5.7L & 5.0L
Transmission: 700R4
Axle/Gears: FACTORY
Re: cant read aldl when jumpered

i have the factory service manual and chart says to check for various voltages and grounds and could possibly lead to a defective ecm and or starter solenoid.
i need help bad and quick!!! thnx all!!1
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Old Nov 1, 2010 | 08:00 PM
  #13  
WILL85IROC's Avatar
Thread Starter
Senior Member
 
Joined: Sep 2004
Posts: 952
Likes: 6
From: PITTSBURGH, PA
Car: 85 IROC-Z Z-28, BLUE & SILVER
Engine: 5.7L & 5.0L
Transmission: 700R4
Axle/Gears: FACTORY
Re: cant read aldl when jumpered

any suggestions on why battery drains???
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