i just recently bought an 88rx7 non turbo and so far i had to replace the fuel pump and filter...then it was the acv sensors..changed those...now something else is wrong with it and im all out of ideas....i would be going and if i floored the dam thing it would bogg down and want to kill.....idk what to do so im tryin to see if anyone can help me on here b4 i put it in the shop and swap a chevy motor in it....getting tired of dealing with all the problems.....

 

well, when you said bog down... like the rpm drops and then kicks up and and down, right? well, what kind of upgrades or downgrades are there? i'm just guessing right now, maybe it might be your TPS(throttle positioner sensor) that needs adjusting, or vac leaks.

get back to the forum after you figure out what's changed and if there are any leaks. take pictures and videos if you can too. good luck

 

another problem...it has enough gas but doesnt want to start.....whats the screw on the throttle cable thing in front of the motor and whats its purpose?

 

It sounds like a fuel problem to me. I had this same exact same thing happen to me, replaces the whole fuel system, worked ok but then would bog at WOT and high RPM's.

Got to the point it would not start. After messing around i found this in the tank:



That pump was brand new less than a week before and about 3 - 4 hours of runtime.

So i would try that.

 

Anytime there is trouble hitting the throttle and an eventual reluctance to start, I've found that the culprit is inside the fuel tank. If there is any kind of rust on or in the tank, a fuel filter will clog in less than 10 miles. IMHO, check the fuel pump and the filter again and see what's up since you put it in new.

 

yea, if you can... get into your fuel tank. check the fuel pump and replace the sock. and make sure you reseal it or you'll leak gas too.

 

it smells like its gettin gas...someone messed with the screw infront of the motor that when you hit the gas it moves with the throttle...what does that screw do....and i will check the pump and strainer....any other things i can check to start illiminating things to get my baby going again.....

 

well i drained the tank and took the fuel pump out and there was about an inch of rust in the tank...i vacuumed the rust out and put it back in but havnt tryed to start it cause it started raining bad so ill let yall know if it runs or not

 

Yep, that will do it.

You now have another problem, with that much rust your fuel filter is gone, replace that before trying to start the car. The injectors may also by clogged, might want to send them out to be cleaned, at least put some injector cleaner in the tank (i would put in a 1/4 tank of gas and then a whole bottle).

also, just vacuming th rust in the tank won't get it clean, you will need to wash it out good, with some cleaner. Brake cleaner works good, but there is other stuff. Then rinse the tank real good until no rust comes out.

Then before the water you used to rinse it rusts the tank some more use some brake cleaner or aclahol to clean the tank out one last time.

You want all the rust gone.

 

it runs better than it did b4 now im messing with items under the hood...when i get on the gas it bogs then goes...tryin to figure out whats making it do that and she will be a beast.....

 

well it runs now but it doesnt get up that well im thinking the fuel filters clogged again maybe or idk...anybody else have any ideas?

 

read my above post, your fuel filter IS clogged. Change that out and see what happens.

Also, your injectors are most likely clogged as well so put some injector cleaner in the tank, make it a heavy conistration.

 

where would i get injector cleaner?

 

wal-mart, safeway, any gas station or auto parts store.

 

any other things it could be and im using 10w30 oil should i be using heavier cuz when i get on the gas it makes a knocking type noise like the iols to thin or something......what could that be.......

 

Might be a bad OMP too...

Just guessin, but it might be worth checkin out. I had the same problem, and was convinced it was a fuel problem, and spent alot of time and money, when I just needed a new OMP.

 

wtf is an omp...im new to this stuff don't know all the stuff yet...what about the knocking noise?

 

Limp mode is only on the S5, his is an S4 so he doesn't have that.

Also, the OMP stands for Oil metering Pump. It injects a small amount of oil into the rotors to keep them oiled.

 

where is that located on my car is that above the plugs? where the oil pressure sensor is?....im lost and need help with learning things on this car......also what about the starting up and running then i shut it off and try to start it after about 30 min to and hour of cool down time and it doesn't start....it started and idled at about 900rpm and ran decent all day but idk about tomorrow it acts funny every now and then......any ideas.......thanks

 

honestly it sounds like it is flooding or has low compression. Search for both of those to get more info.

 

it will start up in the morning and **** but when i shut it off after driving it it will not start up for like another 8 hours....someone know what is causing this.......

 

Sounds to me like you should check compression. Is there any smoke?

 

no smoke at all......i found a problem i was told to check the cat and see if it was glowing so i did and it was glowing so ima take it off and see if that helps the bog down when i get on the gas....but nope no smoke at all

 

also i have another problem.....when i push in the clutch the noise quits but when i let it out it makes a whinning noise and when i get on the gas just sitting there the whinning gets louder...anyone know what it can be.....

 

gutted the cat and doesnt bog down at all anymore......but have no go till 3 1/2 to 4k rpms.....still have no idea what the whinning noise is come on guys help me out im new to all this stuff