DMSAND112 Posted August 16, 2020 Share Posted August 16, 2020 1987 300ZX NO TURBO UNABLE TO REMOVE BROKEN CYLINDER HEAD TEMP SENSOR JUST SPINS. Quote Link to comment Share on other sites More sharing options...
NewZed Posted August 17, 2020 Share Posted August 17, 2020 1 hour ago, DMSAND112 said: 1987 300ZX NO TURBO UNABLE TO REMOVE BROKEN CYLINDER HEAD TEMP SENSOR JUST SPINS. VISE-GRIPS 1 Quote Link to comment Share on other sites More sharing options...
Neverdone Posted August 18, 2020 Share Posted August 18, 2020 DRILL IT OUT ITS BROKEN ANYWAY. Quote Link to comment Share on other sites More sharing options...
DMSAND112 Posted August 18, 2020 Author Share Posted August 18, 2020 NewZed & Neverdone Thanks for responding. Regarding Vice grips there is not enough of anything to grab onto. I was thinking about attempting to drill but even if it does not just spin like it does as I try backing it out anyone know where any pieces of the sensor may end up. Being a dry sensor obviously it will not be in the coolant. From what I understand the tip rest against metal (which might be preventing the sensor from separating). Being my 1st post (on any forum) I just figured out how to post pictures which may help.Pictures of 3 sensors. On left is the original. I hack sawed off the nut so I could understand what is going on. The middle is the new one I just installed and as I was torquing it it sheared off (It didn't take much). One on right is the new "Genuine Nissan" I ordered steering clear of cheap imitations although It resembles the cheap one more than the original I had to hack saw. 5th picture is what I see now and that tiny bit that sticks out just spins. Quote Link to comment Share on other sites More sharing options...
NewZed Posted August 18, 2020 Share Posted August 18, 2020 Seems like it's just waiting for the right size screw extractor, AKA EZ-out. Take the broken one that you have to the hardware store and find the one that fits. How tight were trying to get it? It only needs to be tight enough to keep the fluid from leaking. https://www.google.com/search?rlz=1C1SQJL_enUS862US862&sxsrf=ALeKk03sxj-QUSEnC0E3c1GDEwJVOJlsRQ%3A1597778847396&ei=nys8X9LVF8Kw0PEP9LauoAw&q=ez+out&oq=ez+out&gs_lcp=CgZwc3ktYWIQAzICCAAyBAgAEEMyAggAMgQIABBDMgIIADICCAAyBAgAEEMyAggAMgIIADICCAA6BAgjECc6CggAELEDEIMBEEM6BQgAELEDOggIABCxAxCDAToICC4QsQMQgwE6CAguEMcBEKMCOggILhDHARCvAVCGK1j6NmDkOWgAcAB4AIABbYgBrgSSAQM0LjKYAQCgAQGqAQdnd3Mtd2l6wAEB&sclient=psy-ab&ved=0ahUKEwiSoYOFvqXrAhVCGDQIHXSbC8QQ4dUDCAw&uact=5 Quote Link to comment Share on other sites More sharing options...
DMSAND112 Posted August 18, 2020 Author Share Posted August 18, 2020 Its actually a dry temp sensor. As I was torque it the head kept turning and I wanted to have it in the same position as the original (supposedly best position for the bend in the harness) so I would turn the head back-- tighten-- head back... (I wasn't paying attention as a little one kept asking what was I doing). I had it set at 10 ft lbs. Previously I also had used a heat gun to test it (weaken metal?). Should have been paying attention. I've tried different EZ outs both size and type (including above). It just spins but it is starting to chew up something. Considering switching to wet temp sensor by relocating as z garage site says. Quote Link to comment Share on other sites More sharing options...
NewZed Posted August 18, 2020 Share Posted August 18, 2020 (edited) 39 minutes ago, DMSAND112 said: Its actually a dry temp sensor. It just spins but it is starting to chew up something. Considering switching to wet temp sensor by relocating as z garage site says. Oops, I forgot about that. Dry. Even better, finger tight would probably have worked. Too late though. It's not a strong metal, as shown by the fact that it broke. Might be that you're only contacting the insert inside the threaded portion, circled in red below, and that's what's spinning. Your EZ Out is not contacting the thread outer sleeve. Find a way to make contact with the outer sleeve that has the threads. Maybe a chisel to poke/peel the inner portion inward, jam it in between the insert and the threaded sleeve. Even a pick or a thin screwdriver might jam in to the gap there.Just a guess. Without the head on it there's really no tension on the threaded portion. It should be finger tight, unless you used thread locker on it. Edited August 18, 2020 by NewZed Quote Link to comment Share on other sites More sharing options...
DMSAND112 Posted August 19, 2020 Author Share Posted August 19, 2020 Hi NewZed I totally agree. When I hack sawed the original, the part you circled, slipped out very easily. Do you happen to know If Pieces happen to fall into the engine, what are they falling into? Never have seen the inside of the engine. If pieces fall into a section that would not hurt anything I would get more aggressive with it. The last thing I did was use a cotton swab and pulled out gold debris. I would call Nissan but I know more about the car than they do. The last mechanic which knew a lot was at Pacific Nissan (Pacific Beach San Diego) and they sold to Lang and they abruptly closed leaving the office equipment along with what was in parts to be auctioned off as abandoned property a few months ago. Quote Link to comment Share on other sites More sharing options...
85zxt Posted August 19, 2020 Share Posted August 19, 2020 Thought i had bad luck. Might be a good time to do the headgaskets - wtheck. That isn't coming out - the conventional way - good luck - Quote Link to comment Share on other sites More sharing options...
NewZed Posted August 19, 2020 Share Posted August 19, 2020 9 hours ago, DMSAND112 said: Hi NewZed I totally agree. When I hack sawed the original, the part you circled, slipped out very easily. Do you happen to know If Pieces happen to fall into the engine, what are they falling into? Never have seen the inside of the engine. That hole is not open to the inside of the engine. It's dry, as you reminded. You could even drill out the remnants and rethread it. Just don't drill too deep. Quote Link to comment Share on other sites More sharing options...
260DET Posted November 20, 2020 Share Posted November 20, 2020 Just jam it in there, using a pick or a thin punch, then drill it out. Maybe even the right loctite will hold it enough, anyway that's what you have to do. Quote Link to comment Share on other sites More sharing options...
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