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Question

boat will start and run fine. shut it off after it is warmed up and it will resart, then begin to run erattically, going to high and low rpm and the alarm will sound. the boat shuts off and will not restart until it has sat for 3-4 hours, then runs fine again. I installed new IAC valve and TPS sensor and now the boat will start but not idle, runs at high rpm, 1500 to 1700 and will not go any lower. noticed when i installed the TPS sensor that the sensor would not fit in the groove unless the throttle was put in full throttle positon. did i install it wrong and were these parts the problem? 1999 Sea Ray 240 Sundancer with 5.7 L EFI and digital ingition.

Submitted: 50 days and 8 hours ago.

Category: Boat

Value: $28

Status: CLOSED

Posted by ALL Around Tech 50 days and 7 hours ago.

Answer

Hello,

The throttle will not need to be wide open to put the new tps in. Swap the tps for a new one and reinstall it, then if rpms still race check for a sticky cable and spray wd 40 or carb cleaner around the intake manifold base and check for vacuum leaks, if the rpms change then you found a leak.

If you need further assistance I will be glad to help you.

Thanks,
Joe

50 days and 7 hours ago.

Reply

The TPS will not fit into position over the metal shaft that sticks out the side of the throttle body when the the throttle is in idle position. It only fits when the shaft is in full throttle position. How does it need to be installed and are these sensors what caused the problem with not restarting after the boat is warmed up?

Accepted Answer

Sometimes you just barely have to open the throttle just a hair to get it on, if you have to open it all the way then once you put it on it is not reading correctly.

The IAC was most likely the problem, put your old tps on and see if it goes right on and corrects the problem.

Accepts:
Expert:	ALL Around Tech
Pos. Feedback:	97.8 %
Answered:	10/5/2009

Marine Mechanic

ASE, electronics, Marine inboards and electronics, automotive drivability, all around repair tech,

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