See full version: Help Needed - 1996 Volvo Penta EFI (multiport) Ford surging above 2800 RPMs
My fix, was a Throttle Position Sensor (TPS). Some are adjustable. You can hook up a voltmeter to the sensor wire and get a baseline. Then turn the sensor slightly (you may need a chainsaw file to open the grove in the plastic tabs) Then retest and see if the volts change. I just bought a new TPS for $80.
I had them deliver it to another place near them with an excellent Marine Ford mechanic and he found the problem. more
Hope this helps! Looking forward to being on the water in 2014! more
Wish I had seen this thread. Could have saved you a bunch of grief. All you would have had to do is remove the wire from each of these switches to see if it helped your problem. here
He said there are 3 temperature sensors. The one for the ECM was going bad and putting it in limp mode but not throwing a code so the computer didn't know how to handle the issue. more
Thank you in advance for your help, I really need it and have been off the water for a majority of the summer!!
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