revving issue on 90 DA

[vtecFTW]

alright so i FINNALY fixed my no start issue but i have a constant revving issue as well, idk what it could be if any1 knows lemme kno but i have these hoses and idk what they go to so if let me kno. its a 90 DA integra btw





Shot at 2012-03-08

[collin0619]

I am also having that same issue with my db. With my car started it will idle perfectly for more than an hour but as soon as touch the gas pedal, the engine starts bucking untill it stalls out, like a vacuum issue. The first valve is supposedly called a dashpot pot valve. It's a vacuum valve that runs off the intake pipe before the trottle body.how it supposed to work it that when the gas pedal is pressed and the trottle plate opens up, the valve gets vacuum from the vacuum in the air intake. When you let your foot off the gas, that valve is supposed to slow down the throttle plate from closing too fast and cutting off the air supply to the engine and causing the engine to stall out. Try running the hose to the intake and let me know how it works...i need help too

[vtecFTW]

alright but thats how long the hoses are and i kno there supposed to be longer so idk if the previous owner cut them because of the aftermarket air filter thats on (u cnt c it in the pic obviously cuz it was off at the time, but yea mines idels for like 5 min just fine then starts to act up and i needa get dis fixed so i can pass emissions and get it on the road

[ls94civic]

up

[littleNick]

fuck that old intake manifold go get a dc manifold only two vacuum hoses and u can still pass emission for both u guy i have two manifold hmu

[crzycivic93]

fuck that old intake manifold go get a dc manifold only two vacuum hoses and u can still pass emission for both u guy i have two manifold hmu

yuppppp tell em how its donee bruhh

[vtecFTW]

alllllrrriiiggghhhhttttt but dat still dosnt fix the constant revving issue unless the cause IS those hoses which i dought

[HONDA TECH]

yes plzzzzz let us know cause i have the same problem on my 92.... it will start and run for a while and then as soon as i step on the gas it wont move at all and studder and shut off. after it shuts off it wont start... you guys have the same issue as far as the car not starting? after a few min it will start up again but wont move....

[vtecFTW]

naw mines runs but shitty like it seems like its about 2 stall out but den revs high again den almost stalls den high nd its annoying obviously plus cnt pass emissions like dat

[efadict23]

ok do any of u guys have check eng light? if so check that first.....is ur idle loping up and down or is it just too low or too high? the reason i ask is becus it sounds like all of u have bad throttle position sensor....you would have a CEL for that...if u dont have the light then its a vacuum leak..on the obd0 cars u might have to change those dash pots....the spring inside tends to give out....on the obd1 cars with no CEL u wanna check the valve that sits on the bottom of the throttle body....it has an adjustable spring inside that can wind loose....u wont get a CEL for that cus even tho there is coolant flowing thru and its conected to the iacv it has no electrical conection to the ecu......just some thoughts from havin to deal with the same issues in the past...gl guys

[Inline4]

Maybe low coolant seen that happen on a couple cars

[<3Lspower]

if it dnt got nothin to do with ur intake mani move on to the timing could b off by a tiny bit

[95egB16A]

efadict23 hit it on the nail then do check timing like <3lspower said.

[HONDA TECH]

i have a check engine liht on but its cause of the oxigen sensor not being plugged in cause of a broken plug but..... but now that you mention it the tensioner is bad so the timing belt is really loose.... i dont even feel like fixin it anymore, lol. i think im gonna sell the car and get another one thats in better shape.

[collin0619]

Thanks, bro... I actually do have a brand new TPS. I will definitely swap that out tomorrow. Also, I was looking online for the dash pot and air boost valves...where can I get those? Do I have to go oem or can I get it anywhere else?