hi ive a 1.8 vtec accord has just started having probs intermitentlly when i go over 3500 revs car shudders and wont rev above 3500 if i turn engine off it will run normall instantly this doesent happen all the time there is no patern to it at all it threw up a code p1259 but honda says they dont recognise that code help please

 

P1259 = VTEC system malfunction

Low on oil?
VTEC spool valve clogged with dirty oil?
Look for loose/dirty/corroded connection at VTEC solenoid.

 

thanks jim oil is ok honda checked couldnt find anything wrong also said they dont recognise the error code will check for loose connection in the morning forgot to mention that once fault occurs i can stop car and rev up it wont go past 3500 with my foot to the floor kinda goes up and down like your tacking your foot of pedal and then back on but imm not foot is to floor but if i turn engine off even for 30 sceconds and restart everything normall will rev up to max revs no problem

 

Where are you (1.8 liter isn't a USA engine) and what year car?

F-series engine (up to 2002) have VTEC spool valve bolted on the head & it's got a little 3-bolt flange at the VTEC solenoid. K-series engine (beginning in 2003) is a LOT different.

 

hi imm in sunny scotland well sometimes lol its a 1.8 2000 model

 

OK, a Swindon-built Accord is different than a USA Accord, but both should have an F-series engine. So #11 in this picture is the VTEC spool valve assembly. Not sure if you get a VTEC oil pressure switch (#14) or if that's plugged off.

This parts-picture is a bit misleading. The actual position of that spool valve is over towards the other end of the head - closer to the distributor.

Remove that spool valve & clean the gunk out. You'll probably want to get new gasket (#13) because it'll be hardened from age & heat - probably leak if you re-use it.

 

thanks for your time jim will check spoolvalve i cant open your picture not sure y

 

www dot hondaautomotiveparts dot com
click on PARTS
Go into car year/model because your UK VIN won't work.
try Accord 2000 LX
Cylinder Head for the category.

There's other on-line parts places that use the same pictures. I think they come from Honda's electronic parts catalog.