Who wants to play name that J-tool?

[Tabb]

This is a old one that is now obsolete. I've looked everywhere on the web and found nothing on it. I know what it was used for. Does anyone care to take a guess? (Hint.. It was used on old GM's)

 

[Muddytazz]

Its a tool for adjusting the "Idle Load Compansator" on a 82-92 camaro carburator

 

[Muddytazz]

Idle Load Compensator

The idle load compensator is adjusted at the factory. Do not make any adjustments unless diagnosis leads to it, or curb idle speed is not to specification.

1. Make certain ignition timing, mixture adjustment, vacuum hoses, fuel pressure and CCC system meets specifications.
2. Remove air cleaner and plug hose to thermal vacuum valve.
3. Connect a tachometer.
4. Disconnect and plug hose to EGR valve.
5. Disconnect and plug hose to canister purge port.
6. Disconnect and plug hose to idle load compensator.
7. Back out idle stop screw on carburetor 3 turns.
8. Turn air conditioning OFF.
9. Block drive wheels, set parking brake, place transmission in P, start and warm engine to normal operating temperature. Make certain choke is OPEN.
10. With engine RUNNING place transmission in D and idle load compensator fully extended (no vacuum applied). Using tool J-29607, or equivalent, adjust plunger to obtain 650-750 rpm. Locknut on plunger must be held with a wrench to prevent damage to guide tabs.
11. Measure distance from the locknut to tip of the plunger. This distance must not exceed 1 in. (25mm). If it does check for low idle condition.
12. Reconnect vacuum hose to idle load compensator and observe idle speed.
13. Idle speed should be between 425-475 rpm in D.
14. If idle speed is correct no further adjustment is necessary, proceed to the next step. If idle speed is still incorrect continue as follows:

It may be necessary to remove the idle load compensator from the engine unless a hex key wrench is modified to clear obstructions.

1. Stop engine, remove rubber cap from the center outlet tube.
2. Using a 0.90 in. (23mm) hex wrench, insert through open center tube to engage idle speed adjusting screw.
3. If idle speed was low, turn the adjusting screw counterclockwise approximately 1 turn for every 85 rpm low. If idle speed was high turn screw 1 turn for every 85 rpm high.

1. Disconnect and plug vacuum hose to the idle load compensator.
2. Using a hand pump, apply vacuum to the idle load compensator until fully retracted.
3. Adjust the idle stop screw on carburetor float bowl to obtain 450 rpm in D.
4. Place transmission in P and stop engine.
5. Reconnect the idle load compensator.
6. Reconnect all vacuum hoses.
7. Install air cleaner and gasket. Remove wheel blocks.

 

[4X4HIGH]

My guess is an old tappet wrench.

 

[dremu]

Yeah, but it really is an idle load compensator.

http://www.autozone.com/az/cds/en_us/0900823d/80/15/a0/86/0900823d8015a086/repairInfoPages.htm

Also apparently used on Oldsmobuick Regal and Century.

-- A

 

[Tabb]

Is that your final answer?

 

[dremu]

Is that your final answer?

Well, the number matches. I own no Oldsmobuicks nor F-bodies and intend to keep it that way, so sure.

-- A

 

[Tabb]

Well I'll be damned, I've been using it for somthing different. The guy that gave it to me said it was for removing and installing compressor seals in the old GM r12 compressors. I've used it for this purpose on a few occasions and must say it works much better than a pick. I could not find any info to verify its purpose so I figured thats what it was designed for. Anyway I really have no use for it so if anyone here needs it send me a pm.

 

[Tabb]

Well I'll be damned, I've been using it for somthing different. The guy that gave it to me said it was for removing and installing compressor seals in the old GM r12 compressors. I've used it for this purpose on a few occasions and must say it works much better than a pick. I could not find any info to verify its purpose so I figured thats what it was designed for. Anyway I really have no use for it so if anyone here needs it send me a pm.