Engine Idle - Help!!

[Double D]

Sorry D your boat isn't back yet. You missed a busy lake. It was crazy. I hope Don can get it figured out for you.

I hope so. Waiting for that new sensor and I can try it again! I think I will suggest that Don or Chris take a ride with me....

[Footin]

Make Chris go, he doesn't anything anyways! hahahaha

[AZDave]

Ok, this is one that got me on my Prostar. Has the gas tank ever been removed and cleaned out. Mine had a small crack in the tubing that connected to the pick up screen. Intermittant lousy idle and acceleration. Other than that, has any fuel lines been routed near the engine block? And finally, cap and rotor, if not new you never know. Good luck.

[Double D]

Make Chris go, he doesn't anything anyways! hahahaha

I like it!!

Ok, this is one that got me on my Prostar. Has the gas tank ever been removed and cleaned out. Mine had a small crack in the tubing that connected to the pick up screen. Intermittant lousy idle and acceleration. Other than that, has any fuel lines been routed near the engine block? And finally, cap and rotor, if not new you never know. Good luck.

I have never removed and cleaned the gas tank. I assume the pick-up screen is in the bottom of the tank? So this crack caused fuel pressure problems??
No fuel lines have be re-routed recently and the cap and rotor are new. Thanks for the thoughts!

[captain planet]

So this should move you back up so you don't have to dig.

So.....Has Don or Chris figured it out yet? If you can keep Chris from chewing the fat with people he might be able to get some work done!

[TX.X-30 fan]

So this should move you back up so you don't have to dig.

So.....Has Don or Chris figured it out yet? If you can keep Chris from chewing the fat with people he might be able to get some work done!

If it is the hubs just remove a wheel up frong and grab the lugs to check for play..........

[Double D]

So this should move you back up so you don't have to dig.

So.....Has Don or Chris figured it out yet? If you can keep Chris from chewing the fat with people he might be able to get some work done!

Nothing figured out yet. I have been waiting two weeks for this sensor that does or doesn't exist on my engine. They ordered the correct part but thought it was the wrong part so they ordered the wrong part and now they have both. Confused?? No one, except RSPIECHA (thanks to his thread), could tell me where this sensor was located. As Don says, finding the correct information on a boat engine is a lot harder than finding it for a car.

However, the sensor is at the shop and I need to either take the boat up or go pick it up so I can put it in and get it tested again. I told Chris that he should be ready for a test drive on Friday so he can see if the problem persists or gets corrected. Of course he tells me that he may be out (chewing the fat) in a new X15 he just sold, so we can see where my little 94 - 205 rates.

All I know is Summer Baseball at Jackson is over after Thursday night and I need to get this boat running smooth.

[Ethomass]

I've been following this thread because I too am have rough running engine issues. I have a 2001 PS 205v. Brand new engine, long block (old one hydrolocked and was not salvageable). When i got the boat back was riding aroudn for an hour just fine and then nothing. Ignition module went up. Got boat back and was now running, until you put into gear, stumbles and sometimes stalls. Now has progressed where when accelerating between rpms 1500-2500 there is a big hesitation. This problem seems similar to yours, and I hope your able to find a solution and get back on the water.

[Double D]

I've been following this thread because I too am have rough running engine issues. I have a 2001 PS 205v. Brand new engine, long block (old one hydrolocked and was not salvageable). When i got the boat back was riding aroudn for an hour just fine and then nothing. Ignition module went up. Got boat back and was now running, until you put into gear, stumbles and sometimes stalls. Now has progressed where when accelerating between rpms 1500-2500 there is a big hesitation. This problem seems similar to yours, and I hope your able to find a solution and get back on the water.

Tomorrow should be my next test. As long as the weather cooperates I will put the sensor in and take it for another lost test drive. Fingers are crossed!

[JimN]

Nothing figured out yet. I have been waiting two weeks for this sensor that does or doesn't exist on my engine. They ordered the correct part but thought it was the wrong part so they ordered the wrong part and now they have both. Confused?? No one, except RSPIECHA (thanks to his thread), could tell me where this sensor was located. As Don says, finding the correct information on a boat engine is a lot harder than finding it for a car.

However, the sensor is at the shop and I need to either take the boat up or go pick it up so I can put it in and get it tested again. I told Chris that he should be ready for a test drive on Friday so he can see if the problem persists or gets corrected. Of course he tells me that he may be out (chewing the fat) in a new X15 he just sold, so we can see where my little 94 - 205 rates.

All I know is Summer Baseball at Jackson is over after Thursday night and I need to get this boat running smooth.

Which sensor?

[Double D]

Which sensor?

Its the temperature sensor that sends info to the ECM. Its a long story why it is taking so long but they weren't sure where it was located therefore they weren't sure if they ordered the right one.

[captain planet]

Tomorrow should be my next test. As long as the weather cooperates I will put the sensor in and take it for another lost test drive. Fingers are crossed!

You have a rain suite correct? Bring one for Chris. Your carpet will dry out eventually.

[Double D]

You have a rain suite correct? Bring one for Chris. Your carpet will dry out eventually.

Your invited to help out!

[Double D]

Well the sensor was replaced, took 2 minutes, and took it to the lake. Told Chris from BHM that if I had problems I would call him. So I ran it through the same scenario; 3 fast areas, 2 long no wake zones right before our ski area. The thing ran great to that point. Entered our ski area and drove up to the corner to suit up (2 minutes @35 mph). With in 30 seconds of stopping the idle started pulsing up and down again. The sensor didn't work.

We did get a new symptom: when is was idling bad and it stalled when I put it in gear, it would not restart for at least 10 to 15 minutes. This happened twice today......

Called Chris at 11:00 and he finally made it at 5 PM. Hooked up the computer to the engine and took several readings. He has to investigate those readings but he did say that the MAP was only getting 2 volts and it should be at 5 volts.

Who knows!!! Very frustrated and still don't know how to fix it. I'm happy Chris was able to get down and now he is involved so maybe he will come up with something.

[JimN]

Well the sensor was replaced, took 2 minutes, and took it to the lake. Told Chris from BHM that if I had problems I would call him. So I ran it through the same scenario; 3 fast areas, 2 long no wake zones right before our ski area. The thing ran great to that point. Entered our ski area and drove up to the corner to suit up (2 minutes @35 mph). With in 30 seconds of stopping the idle started pulsing up and down again. The sensor didn't work.

We did get a new symptom: when is was idling bad and it stalled when I put it in gear, it would not restart for at least 10 to 15 minutes. This happened twice today......

Called Chris at 11:00 and he finally made it at 5 PM. Hooked up the computer to the engine and took several readings. He has to investigate those readings but he did say that the MAP was only getting 2 volts and it should be at 5 volts.

Who knows!!! Very frustrated and still don't know how to fix it. I'm happy Chris was able to get down and now he is involved so maybe he will come up with something.

As I posted before, the grounds need to be checked. If the MAP sensor voltage reference was to a bad ground that happened to be the one the ECM uses, it should throw a code. Again, all voltage and ground references are to the battery posts, not the cable clamps.

I would also recommend that a voltage drop test be done. There are some shared grounds too, and they should be checked out.