I have a '94 model, VIN 1GNDT13W8RO133561, and I am trying to locate the Crankshaft position sensor. I have looked for that sucker everywhere, but no luck. It seems I should have one on the vehicle somewhere, but I can't find it...it's not where everyone says it is! Can anyone out there in Blazerland shed any light on this silly problem?

 

L35 CPI

1992 introduced a new version of the 4.3 L (262 cu in), the L35. This version of the 4.3 L (262 cu in) was equipped with CPI (Central Port Fuel Injection). This system had one centrally located fuel injector to distribute fuel to six hoses each with a poppet valve to each of the intake ports. This system allowed for a multi-point fuel injection, using one injector. The fuel injection was a batch fire system and used a two piece cast aluminum dual-plenum manifold. This engine was available in Chevrolet S-10 and GMC Sonoma pickups, Chevrolet S-10 Blazer/GMC S-15-Jimmy, and Oldsmobile Bravada SUVs, and Chevrolet Astro and GMC Safari vans only. The L35 was rated at 200 hp (149 kW) and 260 lb⋅ft (353 N⋅m) of torque.

The cylinder block was redesigned for use with a balance shaft. Cylinder heads (10238181 casting) used with the L35 will have intake ports with eyebrows that clear the fuel injectors. Timing cover flange area was thickened in 1995 when some of the balance shaft motors had a 6 bolt timing cover - some engines had a crankshaft position sensor (in conjunction with a redesigned distributor containing a pickup assembly which functions as a camshaft position sensor) when OBDII was phased in.
----------------------------

Apparently your 1994 does not have the crankshaft sensor and would not be required if the distributor internally triggers the coil. OBD2 was phased in starting in 1995 (see above text). Hope this helps.

 

Well, that explains why I couldn't find mine! This was indeed a help...you saved my sanity. Thought for a while I woke up in some weird alternate universe! I have the OBD I set up. Guess I'm not the only one this thing confuses. I was on the phone with someone a few years ago regarding some part or something (details escape me now) and the guy insisted that my CPI was a throttle body, couldn't be a CPI because they didn't use them in that rig. I told the guy he was wrong, I was looking right at it, and he wanted to argue with me. thanked him for his help, and hung up. DANG! Sometimes I long for the old days of points and condensers, when the most technically advanced part on vehicles was the light switch! Now, get off my lawn! LOL! Thanks, again!