no vtec??
06-24-2009, 09:00 PM
#1
Registered Member
Thread Starter
Join Date: Nov 2008
Posts: 173
Likes: 0
Received 0 Likes
on
0 Posts
no vtec??
Just finished ls/vtec had vtec for about 2 weeks then traded the dizzy on my car for a full msd and went and bought a dizzy from the local junkyard. vtec worked fine then after a few days if i drove the car for a while vtec would have hesitation when crossing over then after a while would not even cross over. Now today i had a main fuel relay cut out on me i was able to get the car home w/o vtec replaced the relay and still dont have vtec. my car is idleing funny like when your iac valve goes bad which mine is but it stopped today for some reason then tonight the car started to idle like that again but is starting tokinda hop like its something else it wants to stall out now and if i dont keep it revved above 3 grand the car cuts out. have no idea what the problem is need some help. i changed the solenoid gasket which was clogged still didnt help also replaced the top part of solenoid and completly cleaned the solenoid. mY car is obd0 wich has the obd1 conversion. the dizzy is repinned to use an obd0 harness.
06-25-2009, 11:16 AM
#3
tits anyone?
Join Date: Dec 2008
Location: 5-7-5
Posts: 1,832
Likes: 0
Received 0 Likes
on
0 Posts
Re: no vtec??
ok well first off, if im not mistaken, a fuel relay will not effect your vtec. vtec is ran off oil. you need to go everything that you changed over in the ls vtec swap process. check your ecu (find another one and try it out), check the wire from the ecu to vtec sol. also check your oil pressure. usually when the iac goes out, the idle will be very high, at least thats what has happened to me, or a sloping idle.also check your dizzy wiring very well, exposed wires, bad grounds etc...
06-25-2009, 04:32 PM
#4
Registered Member
Thread Starter
Join Date: Nov 2008
Posts: 173
Likes: 0
Received 0 Likes
on
0 Posts
Re: no vtec??
i have tried a differnt ecu. there is two other things i think it could be. The obd conversion harness maybe a passanger in my car steped on it and broke it or. it could be the oil line to the head. Becuase when i changed the vtec screen there was a good amount of metal in it so im wondering if there isnt enought pressure to the head. The head is getting oil because if i run the car then take off the vtec solenoid it will leak oil. but i have heard of a problem like this before on another motor but on the b20 vtec that his oil line was too small and not enough pressure for vtec. but the guy who built my motor has the same size line for his ls vtec and not a single problem
06-25-2009, 09:46 PM
#5
Registered Member
Thread Starter
Join Date: Nov 2008
Posts: 173
Likes: 0
Received 0 Likes
on
0 Posts
Re: no vtec??
driving tonight i got it to cross over into vtec it didnt cross over untill 7200 and i hit the rev limiter at 7500 ive got plenty of oil in the motor im gonna try changing the oil tommrow and running a smaller size filter to increase oil pressure
06-26-2009, 01:05 PM
#7
Registered Member
Join Date: Apr 2006
Location: near charlottesville
Posts: 1,051
Likes: 0
Received 0 Likes
on
0 Posts
Re: no vtec??
my questionis, where did all the metal in the screen come from? might have a bearing bad. giving low oil pressure not letting it cross over
06-26-2009, 01:13 PM
#8
da dragva kokopelli
Join Date: Oct 2004
Location: the last place you look
Posts: 8,949
Likes: 0
Received 0 Likes
on
0 Posts
Re: no vtec??
if oil isnt getting to the vital spots where it needs to be due to him not blocking off the oil passages it wont build enough oil pressure to cross over and something probably isnt getting enough oil, and making the shavings. plus i have seen many a spun bearing car still cross over....
06-26-2009, 01:25 PM
#9
tits anyone?
Join Date: Dec 2008
Location: 5-7-5
Posts: 1,832
Likes: 0
Received 0 Likes
on
0 Posts
