Ricey_Bricey

I'm new to honda-tech although ive been reading and reading for months on this site, alot of good usefull information. i bought an EG hatch with an LS/VTEC in it about a month ago, ever since i had the car vtec has not been working.

when i first got it, it was showing a code 8 on the p28 ecu.
i replaced the distributor, cleared the code and got a chipped p28 from phearable.net. i have no CEL and still no vtec.

i also have checked all wiring, it seems fine. this weekend i changed the oil pan gasket and banged out a dent in the pan, as i read this could cause vtec not to engauge (pickup looked fine by the way). but still no vtec.

2 issues i think may be the problem are the firstly the VSS, reason being is because the speedo only works until the car is warm, anyone know why? and would this cause a problem? (no code being thrown for this)
the other reason is could the oil line for the ls/vtec be too thin and long for it to hold pressure? because my line is abit thinner than my friends who also has the LS/V, and mines alot longer than his. i can get a pic if needed.

Please get back to me with any ideas or suggestions you might have. Thanks in advance.

Ricey_Bricey

bump need help

wdissident

iv seen alota grounding issues and issues with your immobilizer, but i think that case your car wouldnt start.. bump. wish i could help

Ricey_Bricey

alright so i was driving earlier and the speed sensor randomly started to work so i got up to about 5500 rpm and im pretty sure vtec engaged. is there anyway i can check the speed sensor (ohm it out) to see if its bad?

nengx07

yea if your speed sensor is bad it effects your vtec also.. mines is doing that also bc i got no speed sensor lol.. getting new one tho.. hopefully it works.. i got info about vtec not working when vss cel or bad sensor from people who experienced it

Ricey_Bricey

I swapped out the VSS, and im getting the same problem, sometimes the speedo works, sometimes it doesn't. im thinking the plugs bad, i saw corrosion on it and looks like one of the pins inside the plug is broken/missing. anyone know where i can get a new plug with pigtails?

speed_demon018

so what everyone is saying if your speed sensor is bad then you VTec wont work? What if your speedo was off by 10mph? i am having the same problem and havent figured it out yet

bossm

you mean a spark plug needle fell in to your head.......wow dont sound too gravy

speed_demon018

no he means his connector

bossm

k thx for clearing that up for me speed demon

Ricey_Bricey

I'd check the cluster, try another one see if it reads the same.

EKtypeRhaTcH

i would check your connections at the ECU. Make sure that the VSS connection is fine. Doesn't matter if your cluster can read the VSS, but it does matter if your ECU can read it. I would check that, look for a pinout on your ECU and check for the VSS wire.

93hatch_minime

i say just hook up your vtec to a swtich and you can have it at any rpm...lol

Ricey_Bricey

lol i dont want a switch
the problem i found was the cluster was bad, so the speedo's fixed but vtec's still not working.
does anyone know if a oil line too long could cause too low of a pressure at the head?

94_DC

Swap lines with your friend and see if that does anything. Even though I dont think thats the problem.

It has to be something with your VSS. If thats not working properly your vtec wont either.

Ricey_Bricey

I've got the VSS working and still no vtec. ill see if he will swap lines.
anyone else know if the lines could be the problem?