Diagnostic Mode
- Thread starter Jimmy
- Start date
GarnetTy1473
Donating Member
Re: Diagnostic Mode
You don't want to know why he's asking.
TYTILIDIE said:
You don't want to know why he's asking.
BigBadSmoosh
Picking fights on I-65 since 2013
Re: Diagnostic Mode
sign me up for one...
luckily i figured this out before making a pass down the track
GM TURBO said:
sign me up for one...
luckily i figured this out before making a pass down the track
Re: Diagnostic Mode
Understanding the ALDL
This document covers most GM (General Motors) vehicles including the following:
GMC Chevrolet Buick Pontiac & Oldsmobile vehicles including: Astro, Typhoon, Syclone, S-10 truck, Blazer, S-10 Blazer; Camaro, Monte Carlo, Fiero, Firebird, Grand Am and other passenger class vehicles typically from 1983 to 1992 using OBD1 ECM (Engine Control Module).
The ALDL (Assembly Line Data Link) is located on the underside of the dash of your vehicle, just to the side of the steering column. It enables you to "pull codes" whenever your "CHECK ENGINE" light begins to flash. These codes alert you to certain engine components that are detecting a problem, such as, EST codes, low voltage to certain sensors, and high voltage to certain sensors (amongst many). To check codes and view data from the ALDL you can use a Scantool, Diacom, Datamaster, or other data viewing software, but all you really need is a paperclip. Pretty cheap, huh? Here's how to use the ALDL.
Before we get into what the codes mean, let's learn how to get them. Using the above diagram, the ports are as follows:
A - Ground
B - Diagnostic Terminal
F - Torque Converter Clutch
G - Fuel Pump
H - Brake Sense Speed Input
M - Serial Data (Do Not Use)
To engage the TCC - jumper A & F - This will engage the transmission converter clutch. This is used by racers at the track to engage a mechanical link between the TC and the tranny, thus reducing slippage throughout the run. Has been found to provide better performance, but not recommended for daily use.
Understanding the ALDL
This document covers most GM (General Motors) vehicles including the following:
GMC Chevrolet Buick Pontiac & Oldsmobile vehicles including: Astro, Typhoon, Syclone, S-10 truck, Blazer, S-10 Blazer; Camaro, Monte Carlo, Fiero, Firebird, Grand Am and other passenger class vehicles typically from 1983 to 1992 using OBD1 ECM (Engine Control Module).
The ALDL (Assembly Line Data Link) is located on the underside of the dash of your vehicle, just to the side of the steering column. It enables you to "pull codes" whenever your "CHECK ENGINE" light begins to flash. These codes alert you to certain engine components that are detecting a problem, such as, EST codes, low voltage to certain sensors, and high voltage to certain sensors (amongst many). To check codes and view data from the ALDL you can use a Scantool, Diacom, Datamaster, or other data viewing software, but all you really need is a paperclip. Pretty cheap, huh? Here's how to use the ALDL.
Before we get into what the codes mean, let's learn how to get them. Using the above diagram, the ports are as follows:
A - Ground
B - Diagnostic Terminal
F - Torque Converter Clutch
G - Fuel Pump
H - Brake Sense Speed Input
M - Serial Data (Do Not Use)
To engage the TCC - jumper A & F - This will engage the transmission converter clutch. This is used by racers at the track to engage a mechanical link between the TC and the tranny, thus reducing slippage throughout the run. Has been found to provide better performance, but not recommended for daily use.
dgoodhue
BuSTeD 4.3
Re: Diagnostic Mode
Jimmy is asking for a different reason than more obvious 'ALDL Racing'.
The truck that blew the motor URSLO50 was running in ALDL mode, instead of locking the Torque Converter. Jimmy walked up to me aske me the correct pins for locking the converter, seconds after I had jumpered A-B pins [ALDL mode] in someone elses truck to check the IC Pump. I told Jimmy A-B as oppose to the correct A-F. I didn't even realize it until Jimmy reminded me much later in the night. Before Jimmy told, it didn't even register even after I had heard some mention about AB ->AE mistake.
On that run, the truck developed an apparent rod knock.
Jimmy is asking for a different reason than more obvious 'ALDL Racing'.
The truck that blew the motor URSLO50 was running in ALDL mode, instead of locking the Torque Converter. Jimmy walked up to me aske me the correct pins for locking the converter, seconds after I had jumpered A-B pins [ALDL mode] in someone elses truck to check the IC Pump. I told Jimmy A-B as oppose to the correct A-F. I didn't even realize it until Jimmy reminded me much later in the night. Before Jimmy told, it didn't even register even after I had heard some mention about AB ->AE mistake.
On that run, the truck developed an apparent rod knock.
Re: Diagnostic Mode
next year i think we should make sure we have the manuals handy. I know i drew a blank when the public was asked which ports for tc lockup - it has been a long ass time since i've needed to know :lol:
There has been a couple of 'he must be right' assumptions that haved cuased some trauma lately...i know i'll be double/triple checking myself when working on syty due to this
next year i think we should make sure we have the manuals handy. I know i drew a blank when the public was asked which ports for tc lockup - it has been a long ass time since i've needed to know :lol:
There has been a couple of 'he must be right' assumptions that haved cuased some trauma lately...i know i'll be double/triple checking myself when working on syty due to this
JKsSyclone
Active member
Re: Diagnostic Mode
Whats funny is I think Jimmy already has one of the old shirts. :lol:
JS Manufacturing said:
Whats funny is I think Jimmy already has one of the old shirts. :lol:
TurboManiacal
Donating Member
Re: Diagnostic Mode
I wear my ALDL Racing shirt nearly every week...I'll take 5 if they're available again.
I wear my ALDL Racing shirt nearly every week...I'll take 5 if they're available again.