Clogged Cat??

[Rx-7fetish]

Originally Posted by vex

Wait... Something's not making sense to me... Explain this:
Huh?

I have a non turbo 86 rx7, its lightly modded, the 10th ann accelerates about the same if not a little worse, when i took the 10th ann down the road it ran like an N/A until about 6000 rpm at which speed it was like i just completely let off the gas, the other stuff is what is on the 10th ann. I have no idea if its pushing any boost at all as the gauge is not hooked up, more inspection under the hood reveals what i believe to be quite a few vaccuum leaks, so im sure thats not helping things at all.

I just find it weird that the previous owner before the guy i got it from put a manual boost controller in it but claims to have kept it at stock boost, and installed an fcd.

Originally Posted by vex

A picture is worth a thousand words, are you sure it's not a resonator. Half-way between is about the ideal location for a resonator.

I know its a cat, he told me so, he bought at and had it installed at a muffler shop. I have a RB presilencer, im going to replace the cat with that if it is clogged.

Originally Posted by vex

Just get a thermostat. It will be easier/cheaper unless you have a shroud for the stock clutch fan.

Yep, i have 3 more rx7's besides this one and the one im driving, im going to replace the t-stat anyways just to have everything good to go when i get it straight.

[Rx-7fetish]

Cat



Engine when i got it



As it sits now

[vex]

Originally Posted by Rx-7fetish

I have a non turbo 86 rx7, its lightly modded, the 10th ann accelerates about the same if not a little worse, when i took the 10th ann down the road it ran like an N/A until about 6000 rpm at which speed it was like i just completely let off the gas, the other stuff is what is on the 10th ann. I have no idea if its pushing any boost at all as the gauge is not hooked up, more inspection under the hood reveals what i believe to be quite a few vaccuum leaks, so im sure thats not helping things at all.

Okay, now I understand. Yeah, fix all the vac leaks, ensure that the sensor connections are hooked up and we'll go from there.

I just find it weird that the previous owner before the guy i got it from put a manual boost controller in it but claims to have kept it at stock boost, and installed an fcd.



I know its a cat, he told me so, he bought at and had it installed at a muffler shop. I have a RB presilencer, im going to replace the cat with that if it is clogged.

He also told you he never got on it. Just replace the Cat with the presilencer and call it a day.

Yep, i have 3 more rx7's besides this one and the one im driving, im going to replace the t-stat anyways just to have everything good to go when i get it straight.

Alright then. Just for clarification I was referring to installing an electric thermostat for the fan so it wouldn't kick on as soon as you turn on the key.

[Rx-7fetish]

Oh got ya, i was a little confused on how a t-stat would help anything lol, im messing with it right now, the whole exhaust is welded as one solid piece so im going to cut out the cat and see what it looks like, going to my barn to work on it as we speak

[Rx-7fetish]

New problem, after changing the o2 sensor, plugs and battery as soon as i start it the engine goes to wide open, the throttle cable is NOT stuck, and i havent messed with anything but battery sensor and plugs?????? I am so lost on this problem and dont know where to begin, how do you adjust the idle on a turbo?

[vex]

Originally Posted by Rx-7fetish

New problem, after changing the o2 sensor, plugs and battery as soon as i start it the engine goes to wide open, the throttle cable is NOT stuck, and i havent messed with anything but battery sensor and plugs?????? I am so lost on this problem and dont know where to begin, how do you adjust the idle on a turbo?

Are you sure it's not the Accelerated Warm-Up Procedure? If the Procedure is still intact you will rev to 3 grand for about 10-30 seconds.

[Rx-7fetish]

Originally Posted by vex

Are you sure it's not the Accelerated Warm-Up Procedure? If the Procedure is still intact you will rev to 3 grand for about 10-30 seconds.

No it jumps to 7 for half a sec then drops steady at 6 and wont come down