i took my e-brake assembly off to read the tag on the idm to make sure i dont have a california emission truck. i saw the lil white tag but it didnt tell my anything about AA or AB injectors. ? what am i supposed to look for?
Normally you read the PCM code from the engine compartment side. Just use a flashlight and mirror. If your truck is a 97 California model, it'll have a black flying saucer looking thing on the back of the fuel pump instead of just the banjo bolt (its a pulse dampener). Cheers!
This would be the pulsation damper mounted on top of the fuel pump banjo assembly at the rear of the fuel pump; somewhat under the turbo. Its about 3.5" in diameter, black with Bosch 9 401 240 169 printed on top of it in white letters. The damper may be rust brown by now. Only on California AB injected engines. All of the Federal models do not have this damper installed on top of the banjo.
The glow plug relay also has a current shunt installed on the output of the relay to read glow plug current draw along with a couple of small wires that go to the PCM. The Federal models do not.
just check the label on the front of the hpop and it will give you some numbers then letters, the last two letters will tell you your inj size. example mine ends in AA. it also shows the year of the truck on there.
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