1992 Nautique Electrical issue |
Post Reply |
Author | |
Kevinduffy
Newbie Joined: September-02-2013 Location: Cincinnati Status: Offline Points: 7 |
Post Options
Thanks(0)
Posted: September-07-2013 at 11:01am |
Engine goes to limp mode after 20,000 RPM. Runs fine prior to that. I have disconnected several sensors. this helped but keeps popping up. How many sensors can I disconnect? Are there any other sensors I can disconnect and still have gages work. Guessing coil pacs may be bad. email text any suggestions. Still on the water all day today. Kevin 513-602-6000 Kevin@DuffyRealtor.com |
|
phatsat67
Grand Poobah Joined: March-13-2006 Location: Indiana Status: Offline Points: 6157 |
Post Options
Thanks(0)
|
Limp mode? Which engine is this?
|
|
Kevinduffy
Newbie Joined: September-02-2013 Location: Cincinnati Status: Offline Points: 7 |
Post Options
Thanks(0)
|
Ford 351 Winchester 220 hp with protec
|
|
Bri892001
Grand Poobah Joined: September-27-2008 Location: Boston MA Status: Offline Points: 4947 |
Post Options
Thanks(0)
|
I believe the only two sensors (well, they are actually switches) that affect limp mode are the oil pressure and the temp.
Keep in mind, that there are a separate set of oil and temp for the gauges. The gauge ones are actually sensors. |
|
89Martinique
Senior Member Joined: September-05-2011 Location: Binghamton Status: Offline Points: 457 |
Post Options
Thanks(0)
|
Disconnect the two switches and see if that helps. Is this the powerplus or HO Pro Boss motor? Because its either 240hp for Power Plus, or 285HP for HO Pro Boss
|
|
Current Boats:
1992 Supra Comp-TS6M PCM 351w HO Pro Boss Pro-Tec Ignition - Full Composite (no wood stingers!) 1989 (3rd Gen) Correct Craft Martinique B/R PCM 351w Power Plus 1984 E-Scow Keuka Lake, |
|
Kevinduffy
Newbie Joined: September-02-2013 Location: Cincinnati Status: Offline Points: 7 |
Post Options
Thanks(0)
|
240 HP
Do you mean the 2 red switches / buttons behind the coil pacs? |
|
89Martinique
Senior Member Joined: September-05-2011 Location: Binghamton Status: Offline Points: 457 |
Post Options
Thanks(0)
|
no! Take pics of your motor. There are 2 temp units on the intake manifold and two oil unit above the oil filter. Take a few pics and we can tell you exactly where they are...
|
|
Current Boats:
1992 Supra Comp-TS6M PCM 351w HO Pro Boss Pro-Tec Ignition - Full Composite (no wood stingers!) 1989 (3rd Gen) Correct Craft Martinique B/R PCM 351w Power Plus 1984 E-Scow Keuka Lake, |
|
TRBenj
Grand Poobah Joined: June-29-2005 Location: NWCT Status: Offline Points: 21172 |
Post Options
Thanks(0)
|
There is also a knock sensor, in addition to the temp and oil pressure switches. None of them are connected to the gauges.
|
|
desertskier
Platinum Member Joined: December-19-2006 Location: Az Status: Offline Points: 1115 |
Post Options
Thanks(0)
|
On page 51 of the PCM engine manual in the reference section of this site is the "Engine Wiring Diagram for the 351 Ford Pro-Tec". It is easy to find the switches from this illustration. If disconnecting the switches doesn't cure the problem then there is one other thing you can try before swapping pro-tec parts. If you understand how to use a volt meter then measure the voltage at the 12.5V breaker at the rear of the engine. It is one of the red buttons that you mentioned. Turn your ignition key on but you don't have to start the engine. You should read very close to 12Vdc. If you don't then you are dropping voltage through the dash wiring. There are some pretty simple wiring changes that you could try if this is the case.
|
|
Post Reply | |
Tweet
|
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |