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-   -   LT1/LTR Crank Position Sensors (http://www.mastercraft.com/teamtalk/showthread.php?t=58122)

mikeg205 02-07-2014 04:25 PM

Quote:

Originally Posted by gsxrjtt (Post 1012445)
Yes still for sale.. I just didnt feel right letting it go with out firing right.

So After about 6 hours of checking, rechecking, hooking up the computer and diag. Everything was checking out ok with no codes. Finally traced with proab to ignition, From there we checked grounds and voltages, Then chuck Finally looked at the connector that goes to the ign module. found if we wiggled or held it we would get some fire and coughing from the motor. so we took of the connector and found some of the pins were off so tried as much as he could to realign them. Put the connector back on and used a pin through the back of the connector to apply ample pressure to the connections and BAM about two turn overs and it fired right up. Turned if off then on fired up. Let it run for 5-10 sec and throttled it up to blow out any build up in the engine. turned it off then back on again.


Rockman had a similar issue... Connector on that ignition module


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mikeg205 02-07-2014 04:25 PM

Stopped in at Napa took a look at the PC7 Crank Position Sensor. It's measurements

were - 18mm(.71) in diameter - 2.16 deep - the nipple was .19 inches. I noticed that this sensor is used in very many applications.

They did not have the PC122 (standard motor products) or the AC Delco 213-336.

Waterskibum 02-10-2014 10:26 AM

Sorry all I got busy on projects this weekend, and could not get the CPS out of the boat and go to Autozone. Any updates this weekend Mike?

mikeg205 02-10-2014 12:09 PM

Quote:

Originally Posted by Waterskibum (Post 1013009)
Sorry all I got busy on projects this weekend, and could not get the CPS out of the boat and go to Autozone. Any updates this weekend Mike?

No updates.. have a call into Indmar this AM -

jim826 02-15-2014 04:35 PM

Charlie at Lake WI Ski boats thinks that he may have found them also. he is waiting for some specs to be sure. I'll keep us posted if I learn anything new. I haven't ordered anything yet from ACW.

mikeg205 02-15-2014 05:39 PM

Quote:

Originally Posted by jim826 (Post 1014629)
Charlie at Lake WI Ski boats thinks that he may have found them also. he is waiting for some specs to be sure. I'll keep us posted if I learn anything new. I haven't ordered anything yet from ACW.

awesome! I think $120 is not that bad for a boat part unless that part can be bought for less $35 at an auto parts store. Also, we need guys like Action, Midwest to be able to keep their lights on :) --

But it's also fun to find these parts. Too bad I don't have an LT1 in the garage and an oscilloscope - would have been a fun facet to this project.

waterlogged882 02-15-2014 05:48 PM

..........

supreme112279 02-15-2014 06:07 PM

I've noticed this thread. Is this something I should be concerned with because I have an lt1. I tore down an lt1 a few years ago from a camaro and didn't notice a sensor. I"ll scope out my motor tonight and look for what you guys are talking about

Table Rocker 02-15-2014 06:13 PM

Quote:

Originally Posted by supreme112279 (Post 1014641)
I've noticed this thread. Is this something I should be concerned with because I have an lt1. I tore down an lt1 a few years ago from a camaro and didn't notice a sensor. I"ll scope out my motor tonight and look for what you guys are talking about

Since Indmar used the NorthStar ignition, they have two crank position sensors that the Camaro didn't have. I would think it is uncommon for one to fail, but if you need one you want to be able to get one.

mikeg205 02-15-2014 06:47 PM

1 Attachment(s)
only thing that I have found to make them fail is heat. Comaro used optispark I believe - but I most likely am wrong. The MC Crank Position Sensor is a VR type and develops and analog voltage signal. The critical points are diameter to fit in the hole, length - not too long and not too short, and then the mount.

here's how it sets up -- prolly not the completely correct diagram but prolly very close.


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