EGT Probe Removal Help

FED 387 · 04-09-2012, 12:14 PM

Have you tried anti sieze on the threads??? also heating the area around the probe with a propane torch just a little to help let the metal expand some times works--- if the use a NPT thread you might use a NP straight tap instead of the taper tap just put the probes in and SNUG them in NOT OVERLY tighten when installing---worse case scenario remove and re-install after every weekend to keep them free--you will have to use a socket or line wrench to totally engage the flats on the nut otherwise your gonna round it off then you will really have problems--- what does Racepak say????

Tom Goldman · 04-09-2012, 12:37 PM

Permatex 77124 Nickle antiseize works the best for hi exhaust temps and dissimilar metals. ....I coat the probe sheath where it goes thru the brass fitting.
We've used it for years on O2 sensors at the shop . ...they always come back out ,even years later.

chris ok · 04-09-2012, 01:09 PM

My trick.
Gettingout O2 sensors has always been a problem in toyotas since the steel header exhaust manifolds and it was found brake fluid is the best lubricant to get them out.
Right from toyota engineering. Where we've gone to steel header exhaust manifolds it is often impossible to remove the sensors as opposed to cast iron manifolds. Works all the time.

BlueOval Ralph · 04-09-2012, 01:12 PM

GM has a special anti-seize for O2 sensors that does not screw up the sensors kinda pricey but so are O2 sensors

chris ok · 04-09-2012, 01:26 PM

We've tried everything. I will crack an O2 and then it appears to want to bind and cross thread. I put brake fluid on it. Wait a few minutes and they come out. Put the brake fluid in an oil can squirter and spray on. And its cheap. Always works. A secret Toyota does not like to let out, but for the racers, anything.

MOTORSPORTS Innovations · 04-11-2012, 04:46 PM

A bit Anti-Sieze on the shaft and in the cap will do the trick.

I'll have to try the brake fluid trick on my next tough to remove fitting - thanks Chris. Does it work on bolts too?

04-09-2012, 12:14 PM	#1
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,423 Likes: 540 Liked 333 Times in 180 Posts	Re: EGT Probe Removal Help Have you tried anti sieze on the threads??? also heating the area around the probe with a propane torch just a little to help let the metal expand some times works--- if the use a NPT thread you might use a NP straight tap instead of the taper tap just put the probes in and SNUG them in NOT OVERLY tighten when installing---worse case scenario remove and re-install after every weekend to keep them free--you will have to use a socket or line wrench to totally engage the flats on the nut otherwise your gonna round it off then you will really have problems--- what does Racepak say????

04-09-2012, 12:37 PM	#2
Tom Goldman VIP Member Join Date: Jan 2003 Location: Allentown,PA Posts: 2,477 Likes: 893 Liked 883 Times in 237 Posts	Re: EGT Probe Removal Help Permatex 77124 Nickle antiseize works the best for hi exhaust temps and dissimilar metals. ....I coat the probe sheath where it goes thru the brass fitting. We've used it for years on O2 sensors at the shop . ...they always come back out ,even years later. __________________ Tom Goldman 1500 SG , 1506 STK

04-09-2012, 01:09 PM	#3
chris ok Senior Member Join Date: Jul 2002 Location: Long Island, New york Posts: 592 Likes: 131 Liked 46 Times in 29 Posts	Re: EGT Probe Removal Help My trick. Gettingout O2 sensors has always been a problem in toyotas since the steel header exhaust manifolds and it was found brake fluid is the best lubricant to get them out. Right from toyota engineering. Where we've gone to steel header exhaust manifolds it is often impossible to remove the sensors as opposed to cast iron manifolds. Works all the time.

04-09-2012, 01:12 PM	#4
BlueOval Ralph Banned Join Date: Feb 2008 Posts: 852 Likes: 0 Liked 0 Times in 0 Posts	Re: EGT Probe Removal Help GM has a special anti-seize for O2 sensors that does not screw up the sensors kinda pricey but so are O2 sensors

04-09-2012, 01:26 PM	#5
chris ok Senior Member Join Date: Jul 2002 Location: Long Island, New york Posts: 592 Likes: 131 Liked 46 Times in 29 Posts	Re: EGT Probe Removal Help We've tried everything. I will crack an O2 and then it appears to want to bind and cross thread. I put brake fluid on it. Wait a few minutes and they come out. Put the brake fluid in an oil can squirter and spray on. And its cheap. Always works. A secret Toyota does not like to let out, but for the racers, anything.

04-11-2012, 04:46 PM	#6
MOTORSPORTS Innovations Member Join Date: Dec 2009 Location: Hainesport, NJ Posts: 123 Likes: 0 Liked 15 Times in 2 Posts	Re: EGT Probe Removal Help A bit Anti-Sieze on the shaft and in the cap will do the trick. I'll have to try the brake fluid trick on my next tough to remove fitting - thanks Chris. Does it work on bolts too? __________________ MOTORSPORTS Innovations www.motorsportsinnovations.com