I'm just finally picking up the RX-7 I bought. And ran into a problem.

It's a 1990 GTU, it sat for 2 months. BEFORE it sat, it ran wonderfully ( I know the guy who owns/ed it ).

Today, when going to pick it up, it cranked fine. To avoid any problems, I let it warm up at a sit-still. Then, when I pull it out of the driveway and give it some gas, it won't go above 3500 RPM. Whenever it hits it, it's like a fuel cut. Every Gear. The fastest I got it is like 35-40. Can ANYONE tell me what causes it could be?

secondarys not opening up? front set of butterflys not opening? EGR? Carbon? I need to know pretty much everything it could be, when I go to pick it up tomorrow. Thanks!

 

C'Mon, all you people on this board. Someone must know SOMETHING

 

Secondary injectors.Check their grounds.

Brandon

 

RAWK ON buddy, can anyone think of anything else it could be??? Just in case ya' know.

 

Check exactly when it happens. The secondaries are supposed to cut in at 3700-3800rpm. If it's then, your secondaries aren't firing and the motor's trying to run on half the fuel it needs (which it won't).

 

Approx. 3600-3700 RPM. So, yeah I'm thinking secondaries. Could the VDI be stuck and the 6th ports not opening? or would that create this much of a problem? Also, how would I re-ground the injectors? Don't they go back to the ECU?

My thinking is, go back, Check the secondaries ( not 100% sure HOW at this point ), check the VDI ( wire open if need be ), and if it still won't go over 40MPH, tote the bitch home on a trailor and get cracking!

 

Bump, Bump Bump. That's the sound of the 15's while they're hittin in my trunk....

 

Nah, a hard cut like that won't be an airflow, prob, it'll be fuel or spark. My money's definitely on the secondaries. Can't help with a fix sorry, but do some searches. I've heard this discussed here before.

 

The injectors are probably dirty. Just clean the things, I bet the ground is fine.

 

I swapped cat back on my 87TII and then at the Auto-X the same thing happened. turns out it was the O2 sensor ground, which is a ground on the back of the exhaust. I replaced that and later added some more grounds to the engine, and it totally eliminated that situation.