gavinmosher

Alright guys here is the deal i can stomp the gas pedal and here is what it does it revs to 2200 rpms and then cuts out and idles rough down at 800 rpms

tigerbite

What mods do you have to your car?

duo2999

iTrader: (1)

basic information on the car would probably be helpful to someone who could probably have a better idea of whats going on.

stock or not? its definitely s4. n/a? turbo?

luis911

iTrader: (2)

I bet you took your emissions off.

gavinmosher

Stock as hell Its a 88 10th AE turbo.. i have another thread ive been asking people whats been going on so i dec ided to post a video

gavinmosher

My problem sounds alot like another that was just posted

https://www.rx7club.com/2nd-generation-specific-1986-1992-17/rough-idle-vacuum-leak-863155/

i really need to figure this out its driving me nuts lol.... see i have the rough idle and cant get it above 2100-2500 without a huge hesitation and shaking

ifryrice

That thing sounds horrible. It almost sounds like it's running 1 rotor. It doesn't really sound like a vacuum leak as vacuum leaks usually will run pretty smooth at a certain RPM. Here's what i'd do:

1)Compression check (only continue if this is OK)
2)Replace plugs if they're old, check plug wires.
3)Clean all original grounding points
4)Bust out the multimeter and hit the ECU and compare each terminal to the FSM, at Ign. On and Idle
5)Restab CAS/verify timing

gavinmosher

it has very very rusted out exhaust pipes lol it sat in a field for forever that and my camera on my phone doesnt do it much justice

Also it does run pretty smooth when it idles higher at like 1100 rpms it sounds very smooth

ifryrice

I'd also toss in a TPS adjustment after #3 (you'd notice this doing #4 though). Either way, I'd still go along with that plan of attack. Also, check that the TPS is still good. Get a multimeter and check the OHM range, make sure it's not going to infinite or exceeding the max limit, that can cause some issues like you have.

gavinmosher

Okay i replaced the plugs with new ones i also replaced wires.... it runs a little better.... i put another TPS i had on another car on it.... no change to the strange idle problem....

gavinmosher

i can get it to creap past 2500rpms usually with a small amount of throttle.... but anything past that it does that number there

FelixIsGod29X

iTrader: (50)

You say it sat in a field forever. Did you replace the fuel filter, lines and clean the tank?

gavinmosher

Yeah i put a different tank off a 87 parts car i have and i have a aftermarket fuel pump of some sort the guy i bought it from had it he said its a walbro