This is BY FAR the weirdest problem I've EVER had with ANY car.... I bought another rx-7 cause my other one isn't streetable. I got it for 500 bucks from a friend, and it starts right up, and idles at a perfect 750. Doesn't overheat, doesn't leak, doesn't make any weird noises, nada. Perfecto. Well, one problem:



After about 5 minutes of PERFECT driving, the accelerator gets weird. It breaks down into two things:



1. It starts making a weird like clicking-and-hissing sound when you push on the gas, and it hesitates, and eventually bogs down....If you keep the gas pedal depressed, it'll die...



2. When you let of the gas after it starts doing this, the RPMs kick up a little, kinda like pushing it IN really fast, then letting off, but i'm just letting off....weird......



3. Here's the even WEIRDER part: If you turn the car off, and start it back up in literally TWO seconds, it'll run PERFECT again for another 5 minutes!!!!

When driving it to the shop, I had to kill my car 10 times on the freeway with the clutch in, starting it back into 5th gear, and it got there just fine!!!



HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!

 

umm yucky injectors and old radiator caps?

 

I'm thinking there is an intake leak or a crack on the manifold and its not noticeable until the car warms up and the metal starts changing. Let it warm up again and spray some water or carb cleaner and spray it in the area of which I'm talking about... Sometimes those plastic intake pipes have cracks in them too

 

2. happens to me all the time, when the idle starts dropping, it's like the car automatically keeps it alive

 

Sounds like a fuel problem....in sequence, I would do the following:

from the injectors back.......check the fuel filter.....check the fuel pressure, it should be about 40 pounds, if that fails, check the pick up screen on the pump in the tank



Run some injector cleaner through the tank

Spray carb cleaner in the throttle body



Clean everything as much as possible.......then check for vacuum leaks

 

I've heard of this before; I can't remember what the hell it was though..

 

i would check the MAF

 

if its s5 look for codes

 

Here's more info:



I put fuel injector cleaner in it to no avail



Took it to 3 shops, and NONE can figure it out



Looked for leaks, none apparent, I'm thinking it's a fuel or maybe computer problem.......can't be because it's warm because if you kill it for two seconds, it's not gonna cool down that fast...and it works perfectly again for five minutes after you kill the car for two seconds...I'm thinking maybe either a computer-related problem, or maybe timing, cause eventually a small gap in timing would become a HUGE timing gap the longer its run...Tell me if I'm an idiot or what...I've checked leaks, none apparent, No other problems, can't be because it's warm. I'll replace the injectors with the ones off of my other seven, which are brand (almost) new...I'll update this as soon as info becomes available. Thank you all for your help, and please keep helping!!! please fix it

 

fuel filter? or the screen in the tank? (as someone mentioned earlier)



turn off, crud in gas settles. turn on, go flows fine, until crud gets stirred up.