Topless TA

iTrader: (10)

Need Beater help..........

1992 Honda accord EX 150K ..Idle jumps up & down ( 800-1900 rpm) in park & or neutral. Once tranny is engaged it stops racing up & down, but is still too high (about 1200 rpm) can not diagnose..

After problem occurred I replaced the following.
New plugs, wires,coil,cap, checked EGR and it seems to work fine,put in brand new $50.00 O2 sensor,just did the IAC= idle air control valve cleaned and checked prior to installation.(salvage piece since new one is 275.00). pulled fuel rail & cleaned the injectors , replaced the rubber gaskets that seat with the injectors. No visible or detectable vacuum leaks

Again when a load is on transmission it stops racing but still idles to fast. This is killing my MPG and sounds really bad LOL.

Any help is very appreciated...I am out of ideas
thanks in advance

BlackScreaminMachine

iTrader: (17)

Thats the problem, used part.

Working with my bro's 95 GSR motor, similar but certainly different, same symptoms, new valve fixed it, got it from the dealer. Seems like a common issue. BUt certainly exactly how you described, it happend.

skifast87

i know nothing about hondas. If it were me i would run over the vacume lines another time. other than that i don't know what to tell you i wish i knew more to give you a hand

bad6as

iTrader: (17)

sorry to bring up the dead but is it low on coolant

Topless TA

iTrader: (10)

nope, all fluids are good and recently flushed
still doing it, at this rate it will prob drop the trans with all the neutral drops from 2500rpm

sobaka79

iTrader: (1)

timing chain or the honda equivalant, might be loose making the pcm confused when your surging at a stop light.