Cam break in

MSKBuick · 09-27-2006, 07:45 PM

If one were to replace the cam on the turbo buick, of course following the cam manufacturer's break in procedure, what do you do about the fault code you get from I think the speed sensor? I noticed while doing cleaning that if the ECM sees rpm above a certain threshold for a certain time that it trips a fault code. So, if one were to do a 10 minute break in on a cam at above idle rpms in park, or for that matter an engine break in, how would you avoid this fault code and does if effect or hurt any thing? Any one have any thoughts on what they did for a cam break in or even an engine break in to deal with this? Just curious because I might do a cam swap in the future.

Thanks.

Orlando_87GN · 09-27-2006, 07:59 PM

Never seen that happen.

Steve Wood · 09-27-2006, 08:25 PM

I had it the other day. Just ignore it...it does not affect the performance while it is lit, and, it goes away when you restart the car later.

Steve V · 09-27-2006, 10:02 PM

Happened on the wifes 87 T when I broke in the engine. Cleared after the breakin and all was good. Also saw in on my latest GN last weekend.

MSKBuick · 09-27-2006, 10:13 PM

Thanks guys, makes me feel better about a future cam swap. I thought it would go in some derate or limp home mode and potentially damage a cam swap when I perform one. I will do the transmission in park and the cam manufacturer's recommended time and procedure when I swap in a cam.

Thanks again.

09-27-2006, 07:45 PM	#1 (permalink)
MSKBuick Registered User Join Date: Dec 2005 Posts: 33	Cam break in If one were to replace the cam on the turbo buick, of course following the cam manufacturer's break in procedure, what do you do about the fault code you get from I think the speed sensor? I noticed while doing cleaning that if the ECM sees rpm above a certain threshold for a certain time that it trips a fault code. So, if one were to do a 10 minute break in on a cam at above idle rpms in park, or for that matter an engine break in, how would you avoid this fault code and does if effect or hurt any thing? Any one have any thoughts on what they did for a cam break in or even an engine break in to deal with this? Just curious because I might do a cam swap in the future. Thanks.

09-27-2006, 07:59 PM	#2 (permalink)
Orlando_87GN Resident Idiot Join Date: Sep 2000 Location: Orlando, FL USA Posts: 10,458	Never seen that happen. __________________ Check Out MikesStuff4Sale.com to view my used parts! ------------------------------------------------ 1987 Buick Grand National Budget 4.1, 204/214 cam, TA-49 Turbo, Stockish Heads, V4, MSD50's, TH DP, JayJackson 62mm TB, Translator plus Extender powered. 3680# with pilot ------------------------------------------------ 1993 Mazda RX-7 4.1 Buick Powered 11.20 @ 128mph (2.4 60')!

09-27-2006, 08:25 PM	#3 (permalink)
Steve Wood An American American Join Date: Sep 2000 Location: East of Eden, Texas Posts: 37,175	I had it the other day. Just ignore it...it does not affect the performance while it is lit, and, it goes away when you restart the car later. __________________ ------------------ 'A government that is big enough to give you everything you want, is also big enough to take away everything you have.' - Thomas Jefferson I think one should worry more when people are lining up to get out of a country rather than into it. If they're sneaking in, we must be doing something right. The Chronicles of Zap, from the early 21st century www.vortexbuicks-etc.com

09-27-2006, 10:02 PM	#4 (permalink)
Steve V Registered User Join Date: Jul 2003 Location: Virginia Beach VA Posts: 1,897	Happened on the wifes 87 T when I broke in the engine. Cleared after the breakin and all was good. Also saw in on my latest GN last weekend. __________________ 86 GN RIP 1-29-2004,totaled my fault...my baby. 86 T top GN NASH II,Sold. 86 T stock ,SOLD. 87 White pearl Turbo T ,fresh rebuild ,wifes new toy! 87 GN bonestock!!55,900 miles 1 owner!!Freshly rebuilt. 87 GN 119k newest project. I fix TR's 757 560 2782 http://svaillancourt.photosite.com/

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09-27-2006, 10:13 PM	#5 (permalink)
MSKBuick Registered User Join Date: Dec 2005 Posts: 33	Thanks guys, makes me feel better about a future cam swap. I thought it would go in some derate or limp home mode and potentially damage a cam swap when I perform one. I will do the transmission in park and the cam manufacturer's recommended time and procedure when I swap in a cam. Thanks again.