Boats For Sale:
GT40 engine loping |
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KENO 
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Joined: June-06-2004 Location: United States Status: Offline Points: 11164 |
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 Posted: January-18-2018 at 5:04pm |
I'd put it all in one thread, say the one you started. It might be good to link the posts by some guy with the same name from the Megasquirt support forum into that thread too  Good info and pictures in those posts |
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curiouslibra
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Joined: January-10-2018 Location: Dallas Texas Status: Offline Points: 26 |
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Posted: January-27-2018 at 2:27am |
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Ok I finally got the IACV in the mail and went to put it on and noticed the wire that connects the IACV also connects to this black thing on top of the throttle body that has wires going to it and has a circular hole that I don't know if there is a piece missing from the hole or if this is normal and should look like it does. I'm hoping one of you experts on here can tell me what this is and if this is normal on a GT-40 engine or if I'm missing a piece that is suppose to go into that hole?
     
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i l l "Don't argue with idiots, onlookers will not be able to tell the difference between the two of you, as the idiot drags you down to their level and beats you with experience." |
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Gary S
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Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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Posted: January-27-2018 at 9:21am |
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Yes your missing a piece. I'll bet you can't buy it separately. That is the throttle position sensor. Must be adjusted if you replace it too, you'll have to look that up.
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Gary S
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Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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Posted: January-27-2018 at 9:36am |
 
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curiouslibra
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Joined: January-10-2018 Location: Dallas Texas Status: Offline Points: 26 |
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Posted: January-27-2018 at 4:56pm |
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I checked for a new throttle position sensor and the new ones don't have a cover on them either! Since the boat has been running fine except for the looping that the IACV should fix, I'm going to hold off on getting anything for the TPS until I test the motor with the new IACV. I was just shocked to see an opening on the top of the manifold when I took off the cover.
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i l l "Don't argue with idiots, onlookers will not be able to tell the difference between the two of you, as the idiot drags you down to their level and beats you with experience." |
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63 Skier
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Joined: October-06-2006 Location: Concord, NH Status: Offline Points: 4278 |
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Posted: January-27-2018 at 9:17pm |
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I don't understand how a GT-40 could run without a TPS.
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'63 American Skier - '98 Sport Nautique
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Luchog
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Joined: April-17-2007 Location: Argentina Status: Offline Points: 2135 |
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Posted: January-27-2018 at 9:23pm |
of course it isnt, he's being missleaded. Will, go ahead with the IAC valve, forget about the TPS for the moment. |
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curiouslibra
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Joined: January-10-2018 Location: Dallas Texas Status: Offline Points: 26 |
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Posted: January-28-2018 at 12:44am |
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One more question. The iacv came with a new gasket there isn’t a packaging film I have to take off is there? One side has lettering on it while the other side is just plain gray and uniform in color. Does it matter which side goes toward the iacv?
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i l l "Don't argue with idiots, onlookers will not be able to tell the difference between the two of you, as the idiot drags you down to their level and beats you with experience." |
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Peter6000
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Joined: June-04-2017 Location: Northern VA Status: Offline Points: 25 |
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Posted: January-29-2018 at 2:26am |
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The TPS is still there its only the top cover that is missing, I don't think that would create a problem unless its a vacuum leak easy to test run in idle and cover the hole with your finger if you feel suction or the idle changes it is a problem.
If replace it you need to adjust it as mentioned earlier the procedure is in the Pro Boss manual. You need a multi meter to do it. |
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Peter6000 wrote: