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The 4 beep alarm could also be a sensor out of range, or even low voltage on the engine. Do you also have the 4 light display?
Ok, does the alarm stop as you advance the throttle any?
Are you near the engine now?
Ok, locate the TPS on the port side of the engine. It is where the throttle arm has a link to. Press in on the connector, see if the alarm changes.
Ok, do you have a multimeter to test the voltage on the running engine at the starter solenoid.
On the phone currently.. be back with you shortly
Without a scanner, we need to eliminate items that normally go out.
You found the fault?
May I inquire as to what it was?