sensor approved gasket rtv
Thread Starter
|
Elder User
Joined: Aug 2005
Posts: 996
Likes: 0
sensor approved gasket rtv
When I removed my oilpan on my 91 4.0 to do bearings I glued the pan gasket with rtv silicon. Absolutely leaktight.
The day after putting the vehicle back into service, I got a cel light and o2 code. The transmission torque converter lock up feature was disabled,( see my post on transmission temperature control) I drove it for a few days and it eventually healed but there was a lesson. My crankcase obviously filled with the rtv vapor which the pcv system fed into the engine which affected the o2 sensor.
Lesson: always use the "sensor approved" rtv compounds when working in any crankcase gasketing where the engine will eventually breathe the vapors.
regular rtv is fine for water pumps and other non breathing apps.
Ken
The day after putting the vehicle back into service, I got a cel light and o2 code. The transmission torque converter lock up feature was disabled,( see my post on transmission temperature control) I drove it for a few days and it eventually healed but there was a lesson. My crankcase obviously filled with the rtv vapor which the pcv system fed into the engine which affected the o2 sensor.
Lesson: always use the "sensor approved" rtv compounds when working in any crankcase gasketing where the engine will eventually breathe the vapors.
regular rtv is fine for water pumps and other non breathing apps.
Ken
Former ******
Joined: Nov 2004
Posts: 4,901
Likes: 2
From: Salt Lake City, Utah
Agreed, the acetic acid produced by silicone products will fry an o2 sensor almost instantly. I know a lot of people you used RTV when doing custom intakes, and took out more that just the o2 seonsor. I observed enough RTV will fry the MAF and the converter too. Why don't you do the same thing more easily, and pour vinegar into your airbox. But seriuosly, you have to be very careful with RTV, especially if it is in a plac when the vapors cannot easily escape. On an intake, you can wait about 48 hours, and then you should be ok, but vapors kinda get trapped inside places like the crankcase.
Thread
Thread Starter
Forum
Replies
Last Post
JustinP
1973 - 1979 F-100 & Larger F-Series Trucks
2
Jul 23, 2015 01:29 AM
jb8897
1983 - 2012 Ranger & B-Series
14
Aug 31, 2006 09:49 AM
ceetwarrior
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
7
Mar 21, 2005 11:45 AM
