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spankyjr1, Journeyman
Category: Medium and Heavy Trucks
Satisfied Customers: 2598
Experience:  I worked on all types of equipment semis,forklifts,farm,ect.
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Engine warning light on. 1600 rpm, limit. runs rough. 3

Customer Question

engine warning light on. 1600 rpm, limit. runs rough. 3 beeps at startup. don't know how to check for codes. has auto shift but beeps don't seem to be from trans. n14 select plus 1999. runs smooth if you let off fuel pedal
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Expert:  spankyjr1 replied 1 year ago.

Good morning, sorry for delay, my name is ***** ***** you for asking your question, I will try and help you out.

Try using cruise switches to pull 3 digit code here's is how below.

Use the following procedure to retrieve the flash codes from the check
engine light:

1. Turn the ignition key switch to the On position/ Engine OFF.

2. Turn the cruise control ON/OFF switch to the OFF position.

3. Move the SET/RESUME switch to either position. Hold that position until the yellow lamp begins to flash.

The yellow lamp will flash in order to indicate a three digit flash code and
the SET/RESUME switch may be released. The sequence of flashes represents the
system diagnostic message. Count the first sequence of flashes in order to
determine the first digit of the flash code. After a two second pause, the
second sequence of flashes will identify the second digit of the flash code.

and the third
Any additional flash codes will follow after a pause. These codes will be
displayed in the same manner.

3 main codes that will turn on warning light are low coolant level,low oil pressure,high water temp.

Let me know what codes you get

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