engine reving up by it's self

i have a 88 honda civic hatchback. sometimes it starts to rev up by itself. without me even touching the gas. it doesn't do it all the time. but when it does if i turn my car off it will not start for awhile. i'll try to start it but it it will not. then i smell gas. i had a complete tune up before i drove down to texas from oregon. also what is the ecu. what is this code stuff i've been reading about? do i have the light that blinks under the carpet on the pass side floor board. thanks to any info ya'll can give. i don't really know to much about cars.

probably a vaccum leak or you throttle body is sticking open try spraying some carb cleaner on inside the throttle body break the buildup loose

Could the revving be the tranny? I'm not sure on that one.

As for the car not starting for a while that could possibly be the main relay. It's a common problem especially when the car is hot.

I don't know a lot about the ecu but I'll try to explain what I think it is. ;-) The ECU is the engine control unit. It's a computer in your car that helps manage the car's functions like your coolant temp and fuel injectors and it reads all the different sensors in your car. It's reading tons of data all the time. Looking at the ECU in your car can tell you what's wrong with it, try reading the "4th Gen FAQ - If you are new, please read before posting" threads. Post # 5 tells u what what the codes are. You'll have to look under the passenger carpet and see how many flashes it has.

Hope I helped a little! If you do a search on the board I think there's more posts about how to read the ecu codes.

i don't think it is the tranny. it's a 4 speed maunual. the check engine light comes on everytime i drive. do all 88-91 honda civic have the ecu light thing under the pass floorboard?

definetly not the tranny, thats the dumbest thing i've ever heard.

How high does it rev? Does it rev up and down and up and down, or does it just rev high and stay there?

hey be nice, just because he's not right doesn't mean its the dumbest thing ever - leave those comments to urself

does sound like a vaccum leak, and the ecu is definitely throwing some codes

maybe the engine gets flooded with gas? dont know if that only happens on carbed engines..

hey be nice, just because he's not right doesn't mean its the dumbest thing ever - leave those comments to urself

He might not have been nice, but he was honest. Whoever heard of a tranny revving up by itself? Not the dumbest thing, but one of the dumbest things I've ever heard.

No offense, but if you don't have any clue, don't make something up. At least his next two paragraphs were "somewhat" helpful.

hey be nice, just because he's not right doesn't mean its the dumbest thing ever - leave those comments to urself

agreed, ur just a noob here, dont think u can come in acting all high and mighty because u post on honda tech too, give a little respect and u'll get it back


and for the reving, possible vaccum leak, could be the electronic air control valve, or stuck throttle body, for the no start, that might be ur main relay

Good Luck :)

watch it end up being his tranny for some ungodly reason. :iceslolan

this happen to my friend with his b16 turbo and it blow the rings. it was the idle control valve. might be the same on your, but that is what his car did too

i looked at the ecu code and got code 1, 5, and 16. i now 1 and 16 what is 5?

map

it's all good. the only thing i'll correct is that i'm not a he.

my hubby had a camaro once (an automatic) and when the tranny started to go, it started trying to go into higher gears by itself so i took a stab in the dark and guessed the tranny.

sorry!

when the tranny in my probe died it would shift at random and if i gave it alot of gas it would upshift and downshift over and over really quickly and kinda buck.

my hubby had a camaro once (an automatic) and when the tranny started to go, it started trying to go into higher gears by itself so i took a stab in the dark and guessed the tranny.


ur cars possessed ;) hehe

Stop calling me a n00b, I'm far from it, just because I have a low post count DOESNT mean I'm a noob.

Now, yes possibly a vacuum leak. Take a can of that keyboard cleaner stuff, the really cold stuff, and spray it around your vacuum lines when it is having a lopy idle, the cold air will freeze a crack in a line for a few seconds and the car should run decent until the ice melts.
And I don't think its the EACV because usually when they go bad, your car will run good cold, but when it warms up it will have a lopy idle.
Next time it does it, also try to pull up on the gas pedal with your toe and see if that helps.

ur cars possessed ;) hehe


i think every car i've owned has been possessed... especially my civic!! :P

yeah its ur map sensor easy to fix thats whats making it rev high my friend has a ls in his hatch and it was his map sensor.

i think every car i've owned has been possessed... especially my civic!! :P


lmao, that sucks, possessed cars arent fun hehe :)