alright so i started changing all these hoses and my god these things were dried out beyong belief. they are like potatoe chips. anyway.. no matter how delicate i am, i still manage to snap the tips off some of the vac sensors in the nest below the intake mani. i'm sure many guys have run into this problem, but is their a solution? do i have to replace them? do i even need them? how much do these sensors run for? i am totally stock, just picked the car up from a kid who didn't know how to fix the leaks and the car has been sitting for 3+years. i had the car running yesterday with tons of leaks all over the place, but i was glad to know it runs before i decided to take on this vacuum mess. only to run into this crap.

any info is greatfully appreciated.

 

They're specifically called solenoids, and yeah you have no choice but to replace them. You can find used ones for sale all the time in the for sale section. You can get an entire set for <$50

You can eliminate them, but that's an entirely different discussion and requires a lot more work then just replacing them.

As I'm sure you will hear a lot since you seem to be new to the forum, whatever questions you have, use the "search" button first. And read through the FAQ's on the top of the 3rd gen forum, pretty much everything you will have questions about will be answered there.

 

Take this for what it is worth, but I've been told that you can drill/thread the existing broken solenoid and replace the stem with a valve for a model airplane from a hobby shop. I have not tried to do this myself so take it for what its worth as an idea if you are desperate.

At 50 bucks I think I'd go for new ones.

 

take a look at this if you havent done yet, a great thread from Dale on how to do vacuum hose jobs properly:

https://www.rx7club.com/3rd-generation-specific-1993-2002-16/daleclarks-guide-vacuum-lines-your-fd-904277/

 

ok thanks guys i will keep an eye out for a selenoids for sale. Read up on that link as well. i will be doing the pulsation elimate as well while i have this apart.

 

You can heat the tip of the hose going into the solenoid, give it a slight twist & then it should pop right off. I used one of those small micro-torches to get mine clear of the old hoses. Worked well.

 

There are used solenoids of the same shape available from 2nd gen RX-7s and other Mazda cars.

When removing the old hoses, I use a razor to shave the rubber hose down to nothing on one side until you can see the solenoid nipple. Then twist on the hose or slide the blade behind the end of the hose and pry it away from the solenoid. With the rubber removed on one side it should pop gently off.

 

just get new ones from Ray at Malloy and save yourself the hasle. You definetely dont want to get all the way down there again for a faulty solenoid. Thats what i did. And test and retest every single one of them even if its new. If its faulty just send it back and he'll send you a replacement.

 

how do i go about testing these?

 

Dude. You seriously need to read the FAQ.

The thread on how to remove the vac hoses w/o breaking solenoids is in there. So is a detailed thread from dgeesman on testing solenoids.

Don't expect people to spoon feed you when the info is already there.

 

these selenoids are diff from what is on the rack do they have a name? doesn't seem like i can just replace one.

these are the ones i snapped but they all seem to be the same units.