hey i did a search and checked rob robinette's extenstion manifold removal how to, i think i got it, but i just want to know if theres any special tricks to removing this manifold. i did it on my 2nd gen but it was a N/A so there was alot less wires, but i just go slow and label everything and im hoping to get through it, the reason for removal is i have a HUGE gushing coolant leak coming from what i beleive to be that hose that goes from the Throttle body to the back of the housing, right beside the tranny, on the last cast iron plate of the engine, i cant seem to reach the hose to check so i was thinking i have to remove the uim.

if any one knows of any other possible places it could be leaking, im all ears. all i know is the coolant pours straight out when i put it in, and it runs down onto the DP/turbo area, and its pooling on the top of the rotor housing. i just pray that the nipple off the housing isnt completly wrecked some how... . so if any one has any advice, shoot, im very new to the world of turbo, this is my 2nd rx7, but first expiriance with turbo let alone twin, so i just dont wanna screw anything over. thanks guys. i only ask cuz i know you guys know ur stuff.

 

Hi, I removed the UIM two times about 2 months ago.
I had a problem with the air thermosensor that I replaced, that's why I did a removal.
What I can tell you is that there is a hose under the elbow before the TB and when I did the removal I ended up damaging it, so it started squirting coolant right beside the oil filter housing. It was an extremely thin jet, but it was coming out constantly. So I had to remove it again to change the coolant hose.
So, there are 2 (as far as I know), but I really don't see how the one I screwed up could end up leaking coolant in the back, where you see it coming out.
Just make sure you have all the vacuum hoses hooked back up, the first time I removed the UIM I didn't realize there were two on the firewall side and they ended up messing up my idle (and it is a royal pain in the *** to push them back in without doing the removal).
I hope this helps.
Giovanni

 

yes that helps, thanks man i started it already, got the Throttle body loosened and i am having trouble getting the connecter off the throttle body, i think its broken and i really dont wanna break it more, so the throttle body sensor connector, i think its green, is it a push the front of the tab and pull or push the back of the tab and pull? just wondering, nots probly not a big deal but thought id ask thanks

 

There are 4 connectors and 7 or 8 vacuum lines plus the 2 coolant hoses and both cables. Loosen all the nuts and bolts.remove the cables. You can start at the throttle body end and work in. As you go start to lift up (coolant line must come of bottom to lift up) then start to un- hook the connectors as you go, SLOWLY!!!!. The front vacuum lines are easy since you can see them. I cut my rears and replaced them since I had tubing. As you go lift and feel and unhook. Soon you can peak under the UIM and see the two connectors that are really under it. They should unhook ok since that is usually a non greasy area of the car and they aren't too gummed up. If you mess up and break one it isn't the end of the world. Take the female end to the junk yard and find the mazda section. Mazda still use a lot of the same connectors. Good luck

 

thanks alot man, i got her off today, the only problem i had was one of the check valves on the vaccum hose broke, but i got another one from parts source, so i hope it works out. i found the leak it was as i suspected, it was the hose from the back of the houseing to the TB, it was split about an inch long by 1/4 inch wide, there was some brown crud built up from lack of coolant flushes i assume, and it was blocking enough where the pressure had no where to go except out. so tomorrow ill head over to the parts store grab some coolant line and attempt to get the bugger on there, shes pretty close working quarters in there yikes. but thanks for the info man good to hear from u guys. ill let u know if she still runs good when i get her back rtogether