Thanks DaveW. I hope you are right about my search being an easy one. Unfortunately, being in the middle of the Pacific, that sometimes may not be true.
Is the wiring actually different between the ALDL and the square OBDII?
Thanks DaveW. I hope you are right about my search being an easy one. Unfortunately, being in the middle of the Pacific, that sometimes may not be true.
Is the wiring actually different between the ALDL and the square OBDII?
OBDII started in 1996, and has different wiring.
OBDI ALDL with 160 Baud will use Pin E.
OBDI ALDL with 8192 Baud will use Pin M.
Generally GM passenger cars started using OBD1 ALDL Pin M with 8192 Baud in 1990.
Generally GM Light Trucks started using OBD1 ALDL Pin M with 8192 Baud in 1993.
The 16168625 computer is OBDI ALDL Pin M with 8192 Baud.
I'm very fortunate to live in an area with several salvage yards close by. I sometimes overlook that some members are not nearly as fortunate with salvage yard selection as I am. What is likely less than a 5 minute part search in a salvage where I live, could be a nightmare to find for some members.
dave w
is a 16144288 ecm a 8192 baud?
Happy New Year, Anthony!
From all that I've read and am aware, 4288's are S_LL_OOO_WWWW at 160 baud. The difference in processing speeds between black connectors ECMs and red/blue PCMs was my main reason for opting to go 8625 PCM. However, the side-track foray we took with the 7747 ECM was beneficial to determine the sensors and existing systems, i.e., ignition, fuel pump/relay/regulator, etc. were operating properly.
Last edited by 57 Handyman; 01-12-2018 at 10:07 PM.
handy is your calpac for a v6/4.3? I have one for a 427 pcm but it is a 4.3 std trans if you need it.
Thanks for the offer, Anthony. If I remember correctly, my 8625 was from a '93 4.3L Sierra. Yes, it does have a memcal with .bin chip and netres.
DaveW, thanks for the information. Rather than cutting the wires and isolating Pins A, B, and E via M location, I fashioned separate jumper wires to connect the ALDL to the AutoProm. I'm now able to emulate.
Hey guys,
I'm trying to get my 4.3L S-10 setup in order to take it out of the shop. But before I can put it on the road, my truck has to pass Hawaii's auto safety check program. Consequently, I need to get it to a minimum acceptable operating point. Would anyone of you be able to give me some tips on what I could do to this tune.
The data log was made driving around the hobby shop parking lot several times. Thanks in advance.
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