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Mechanical Troubleshooting

Brand: Caterpillar - Model: C5000

Number of messages: 5

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noe_g
California, United States

I need help. Forklift idles rough most of the time. It rarely idles normal anymore. It doesn't give any codes and this only happens at idle. Once you give it gas, it runs, but when back at idle, it dies again. What could it possibly be?? I checked the vacuum hoses and they're all connected.
help please....
thank you

Posted 26 Jun 2009 03:18 PM

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edward_t
North Carolina, United States

you don't give much information about how many hours or other maintenance ever being done on this unit, but the FIRST step would be to insure the vac hoses are on the -right- place, just having them on may not do it. the NEXT thing would be to hook up the software and run the "fast tas" (idle air volume learn).

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Posted 26 Jun 2009 08:11 PM

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roadtech
Ohio, United States

Change the plugs when motor is cold and check the coil packs. If that doesn't help then check wires to the Mass airflow sensor, they tend to break and this will cause the same issues. Pull the MAF sensor out and check for debris or dust in it, very carefully dust the sensor with carb cleaner and blow dry with 15-20 psi of air, reinstall and test.

Posted 27 Jun 2009 12:42 AM

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edward_t
North Carolina, United States

I would add, check the battery voltage and alt output. I have had one that was a slow crank, but did start, that would intermittently run like garbage at idle, but once the alt got going was "ok"

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Posted 27 Jun 2009 09:00 PM

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proshadetree
Tennessee, United States

Also drain vaporizer warm.And check throttle body.Clean it out.Check all wires near the throttle,They love to break

Posted 21 Jan 2010 11:05 PM

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