'94 BZR- S10 ECM B- Fuse keeps blowing???

[Shawn Herrity]

I have a '94 Chevy- S10 Blazer 4x4 with a 4.3 V-6 and the ECM B- 15 amp fuse continues to blow everytime we turn the ignition. When this happens, it turns the fuel pump off and the vehicle will not start. We've had the ICM tested, as well as took out the ECM model under the passenger side dash. We took the ECM module we removed, and put it into another '94 Blazer -S10 and it started that Blazer fine.

We had the vehicle scanned, the trouble code is... 43. The code calls for the Elec. Spark Control (ESC) Module or Sensor problem.

I am pretty sure the ESC module is in the ECM housing, which is what we connected to the other Blazer, it started fine.

Any Ideas?... Thank You!

[rlith]

Originally Posted by Shawn Herrity

I have a '94 Chevy- S10 Blazer 4x4 with a 4.3 V-6 and the ECM B- 15 amp fuse continues to blow everytime we turn the ignition. When this happens, it turns the fuel pump off and the vehicle will not start. We've had the ICM tested, as well as took out the ECM model under the passenger side dash. We took the ECM module we removed, and put it into another '94 Blazer -S10 and it started that Blazer fine.

We had the vehicle scanned, the trouble code is... 43. The code calls for the Elec. Spark Control (ESC) Module or Sensor problem.

I am pretty sure the ESC module is in the ECM housing, which is what we connected to the other Blazer, it started fine.

Any Ideas?... Thank You!

the ESC module(S) (aka knock sensors) on your truck are on the engine. 1 on the driver's side between and below cylinders 3 and 5, the other one is on the passenger side head against the firewall. The ignition module also comes into play with that code on yours (inside the cap) I would start checking the knock sensor wires for breaks or rubbing...Check your connections at the distributor for the same.