99 ek4 sedan jdm - no vtec, no cel
#1
Honda-Tech Member
Thread Starter
iTrader: (1)
Join Date: Sep 2008
Location: miami. FL
Posts: 489
Likes: 0
Received 0 Likes
on
0 Posts
99 ek4 sedan jdm - no vtec, no cel
car- 99 ek4 sedan jdm
engine- b16a4 stock obd2 with y21 tranny
ecu- stock jdm obd2 ecu
hey guys, so my cel light was on so not vtec. did a scan and the O2 sensor was bad. i changed it and immediately cel went off. took it for spin hoping for vtec. no vtec. i resist the ecu and took it for a drive. still no vtec.
i checked the following
1 oil level is on mark
2 wired the vtec solenoid and its clicking
3 no cel light
any help and suggests on this
engine- b16a4 stock obd2 with y21 tranny
ecu- stock jdm obd2 ecu
hey guys, so my cel light was on so not vtec. did a scan and the O2 sensor was bad. i changed it and immediately cel went off. took it for spin hoping for vtec. no vtec. i resist the ecu and took it for a drive. still no vtec.
i checked the following
1 oil level is on mark
2 wired the vtec solenoid and its clicking
3 no cel light
any help and suggests on this
Last edited by speedfreak44; 03-20-2014 at 12:39 PM.
#2
Honda-Tech Member
#3
If you loved me, you'd all sell me your magic cards to me today
Join Date: Oct 2005
Location: Atlantic Ocean Florida
Posts: 2,698
Likes: 0
Received 0 Likes
on
0 Posts
#4
Re: no vtec no cel
Its O2 sensor not H2O = water .
1. Oil level (checked)
2. Solenoids (checked)
3. Restart ECU (checked)
Are you sure it was the O2 sensor? Can you tell me the reading of your O2 sensor you may be running rich, ecu will not open VTEC if running rich. Have you checked oil pressure, you may have oil leak causing low pressure. When you check VTEC engine must be hot, you must have exact oil pressure, you must be moving it will not open in neutral gear, you must reach specific rotation, you must have no CEL's and proper fuel/air mixure. I hope i helped i'm facing similar problem at the moment.
1. Oil level (checked)
2. Solenoids (checked)
3. Restart ECU (checked)
Are you sure it was the O2 sensor? Can you tell me the reading of your O2 sensor you may be running rich, ecu will not open VTEC if running rich. Have you checked oil pressure, you may have oil leak causing low pressure. When you check VTEC engine must be hot, you must have exact oil pressure, you must be moving it will not open in neutral gear, you must reach specific rotation, you must have no CEL's and proper fuel/air mixure. I hope i helped i'm facing similar problem at the moment.
#7
Honda-Tech Member
Thread Starter
iTrader: (1)
Join Date: Sep 2008
Location: miami. FL
Posts: 489
Likes: 0
Received 0 Likes
on
0 Posts
Re: no vtec no cel
Its O2 sensor not H2O = water .
1. Oil level (checked)
2. Solenoids (checked)
3. Restart ECU (checked)
Are you sure it was the O2 sensor? Can you tell me the reading of your O2 sensor you may be running rich, ecu will not open VTEC if running rich. Have you checked oil pressure, you may have oil leak causing low pressure. When you check VTEC engine must be hot, you must have exact oil pressure, you must be moving it will not open in neutral gear, you must reach specific rotation, you must have no CEL's and proper fuel/air mixure. I hope i helped i'm facing similar problem at the moment.
1. Oil level (checked)
2. Solenoids (checked)
3. Restart ECU (checked)
Are you sure it was the O2 sensor? Can you tell me the reading of your O2 sensor you may be running rich, ecu will not open VTEC if running rich. Have you checked oil pressure, you may have oil leak causing low pressure. When you check VTEC engine must be hot, you must have exact oil pressure, you must be moving it will not open in neutral gear, you must reach specific rotation, you must have no CEL's and proper fuel/air mixure. I hope i helped i'm facing similar problem at the moment.
when the cel light was on before and i did a scan it a bad O2 senor showed up. i replaced it with an oem one. cel light came of. i am also did a scan again and nothing came up.
with regards to the oil leaks, i have none.
so from here im beat as to whats the reason
Trending Topics
#11
Honda-Tech Member
Thread Starter
iTrader: (1)
Join Date: Sep 2008
Location: miami. FL
Posts: 489
Likes: 0
Received 0 Likes
on
0 Posts
Re: no vtec no cel
compared to an eg9 i previously owned it was heard clearly and loudly. this car only has a short ram and power getter axle back.
im sure if it was engaging i would have heard some change in tone. correct me if im wrong
im sure if it was engaging i would have heard some change in tone. correct me if im wrong
#12
Re: no vtec no cel
Provide more details about how this^ test was done.
VTEC engagement generally is not a "punch you in the face" obvious event. It can be missed.
VTEC engagement generally is not a "punch you in the face" obvious event. It can be missed.
#13
Honda-Tech Member
Thread Starter
iTrader: (1)
Join Date: Sep 2008
Location: miami. FL
Posts: 489
Likes: 0
Received 0 Likes
on
0 Posts
Re: no vtec no cel
used a test light and extended wires. negative ground to battery terminal and positive tapped into the vtec solenoid wire. the extended wires connected to the test light and placed into the car with hood closed. buddy of mines held it. and we drove the car around for approx 20mins. double checked connects and drove the car for vtec engagement.
no voltage was being sent, we then disconnected the test light and used a volt meter and still nothing
Last edited by Former User; 03-20-2014 at 12:33 PM. Reason: fixed quote
#14
Re: no vtec no cel
used a test light and extended wires. negative ground to battery terminal and positive tapped into the vtec solenoid wire. the extended wires connected to the test light and placed into the car with hood closed. buddy of mines held it. and we drove the car around for approx 20mins. double checked connects and drove the car for vtec engagement.
no voltage was being sent, we then disconnected the test light and used a volt meter and still nothing
no voltage was being sent, we then disconnected the test light and used a volt meter and still nothing
By the way, the VTEC solenoid and pressure switch each get voltage from the ECU. The solenoid grounds locally whereas the pressure switch grounds on the thermostat housing.
#15
Fish Twig
Join Date: Nov 2005
Location: Still hunting that foo up there
Posts: 15,555
Received 309 Likes
on
285 Posts
Re: 99 ek4 sedan jdm - no vtec, no cel
You couldn't run those connections inside the car you had to wire it to the battery and the solenoid? Wire it to the ecu and ground that bitch to some bolt.
#16
Honda-Tech Member
Thread Starter
iTrader: (1)
Join Date: Sep 2008
Location: miami. FL
Posts: 489
Likes: 0
Received 0 Likes
on
0 Posts
Re: no vtec no cel
took direct from the battery ground because the solenoid is already ground, a solenoid had no polarity so the vtec solenoid uses a positive signal from the ecu. if there was any voltage being sent from the ecu it would have be shown by the test night and if it was too low the voltmeter would have shown the voltage
i stand to be corrected
#17
Re: no vtec no cel
highly doubt it, one wire from ground terminal leading straight inside the car same goes for the vtec solenoid wire.
took direct from the battery ground because the solenoid is already ground, a solenoid had no polarity so the vtec solenoid uses a positive signal from the ecu. if there was any voltage being sent from the ecu it would have be shown by the test night and if it was too low the voltmeter would have shown the voltage
i stand to be corrected
took direct from the battery ground because the solenoid is already ground, a solenoid had no polarity so the vtec solenoid uses a positive signal from the ecu. if there was any voltage being sent from the ecu it would have be shown by the test night and if it was too low the voltmeter would have shown the voltage
i stand to be corrected
I understood your previous post to say that you ran both power and ground wires from the battery. You also did not indicate where the test light probes were placed.
#19
Cool Cool Island Breezes. BOY-EE
iTrader: (1)
Join Date: Sep 2006
Location: TRILLINOIS....WAY downtown, jerky.
Posts: 11,953
Likes: 0
Received 4 Likes
on
4 Posts
Re: 99 ek4 sedan jdm - no vtec, no cel
The dude has a B16 with a short ram. Beethoven can probably hear his VTEC from his grave. It's EXTREMELY obvious when the cam changes. Think of the most obvious thing you've ever heard. B16 VTEC is more obvious than that.
Anyway...OP...is the car fully warmed up when you're trying this? Does your CEL work? Sorry if that's been covered.
The fact that you changed the O2 sensor and that the light went off right away on a OBD2 ECU without resetting it sounds like an issue. OBD2 ECUs remember everything. Like some sort of angry girlfriend.
Anyway...OP...is the car fully warmed up when you're trying this? Does your CEL work? Sorry if that's been covered.
The fact that you changed the O2 sensor and that the light went off right away on a OBD2 ECU without resetting it sounds like an issue. OBD2 ECUs remember everything. Like some sort of angry girlfriend.
#20
Fish Twig
Join Date: Nov 2005
Location: Still hunting that foo up there
Posts: 15,555
Received 309 Likes
on
285 Posts
Re: 99 ek4 sedan jdm - no vtec, no cel
The guys getting on it to verify vtec, so yes its probably warmed up. What I'm trying to do is verify what version obd2 and what ecu he's running and why? Is it wrong to dig deeper to find the answer?
#21
Fish Twig
Join Date: Nov 2005
Location: Still hunting that foo up there
Posts: 15,555
Received 309 Likes
on
285 Posts
Re: 99 ek4 sedan jdm - no vtec, no cel
The dude has a B16 with a short ram. Beethoven can probably hear his VTEC from his grave. It's EXTREMELY obvious when the cam changes. Think of the most obvious thing you've ever heard. B16 VTEC is more obvious than that.
Anyway...OP...is the car fully warmed up when you're trying this? Does your CEL work? Sorry if that's been covered.
Anyway...OP...is the car fully warmed up when you're trying this? Does your CEL work? Sorry if that's been covered.
#23
#24
Cool Cool Island Breezes. BOY-EE
iTrader: (1)
Join Date: Sep 2006
Location: TRILLINOIS....WAY downtown, jerky.
Posts: 11,953
Likes: 0
Received 4 Likes
on
4 Posts
Re: 99 ek4 sedan jdm - no vtec, no cel
His O2 sensor light reset itself? Sounds crazy. EK's are all OBD2, arent they? That's why I'm asking if his CEL is working.
Last edited by Former User; 03-20-2014 at 02:59 PM. Reason: Clean up