Updating cummins isc engine cap pump and problems

2.) Max engine speed without Vehicle Speed Signal (VSS): Limits the engine's RPM when vehicle is stationary, preventing unnecessary engine wear and decreasing fuel consumption.3.) Remote Throttle Signal: Allows add-on items such as a remote accelerator to be used when controlling engine RPM is necessary outside of the vehicle cab (Example: boom operator) For the Cummins diesel motorhome, the Cummins ISC engine is almost a legend.Good luck with your purchase, hope it works out for you.They are pretty decent engines for what they are...Not only does it offer great fuel economy, the maintenance schedule is very forgiving.Besides such options as a factory exhaust brake, the Cummins ISC engine is supported by Cummins dealers all across the nation.I just picked up a dump truck that has the 8.3 Cummins. If it's an older truck with an inline pump you should be golden for quite a while!Does anyone know of any pros or cons of this engine? On the other hand if it has the CAPS pump you could be in for some $$$.

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(ill probably be swapping one into my deuce) Only issue i found with the 8.3/auto was that they tend to eat the throttle/TV cable linkage on the pump, it was a pretty chitty design...

If so, then yes there has been a lot of problems with them leaking. The ease of replacing depends on if you can get to the pump from the top of the motor or have to go at it from underneath. Not an isc -but I did have to replace the fuel pump on my ISB - ouch., The fuel pump is a vp44 (I think) and it has a history of failures. No problems since, work was done over 5k miles ago. If so, then yes there has been a lot of problems with them leaking. The ease of replacing depends on if you can get to the pump from the top of the motor or have to go at it from underneath. Every once in a while the engine will hesitate or buck so I had Cummins service the engine and check the problem.

They found Fault Code of 329 and talked about the fuel pump.

It is a proprietary Bosch fuel pump and replacement will cost between 00.00 and 00.00. twobachs wrote: Every once in a while the engine will hesitate or buck so I had Cummins service the engine and check the problem.

The symptom you are describing is air in the system, the on board system of removing air doesn't get it all.

klm wrote: Not an isc -but I did have to replace the fuel pump on my ISB - ouch., The fuel pump is a vp44 (I think) and it has a history of failures. No problems since, work was done over 5k miles ago. Quite expensive to replace, ,000 plus for the pump alone.

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