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H22a4 Prelude 97. Vtec WONT kick in yo...

 
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Old 10-06-2017, 01:49 AM
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Icon8 H22a4 Prelude 97. Vtec WONT kick in yo...

I've Google and have read this topic on different forums.
None which have a specific answer that could save me time..

I have a 1997 prelude h22a4.
Swapped auto to manual with brand new tranny, clutch fly wheel, slave and master cylinder , etc. Shifts great.
Chipped p28 ECU h22 base map. Crome.
Very healthy , no CEL.
Idles at 700 perfectly.
Aem intake
Skunk 2 exhaust.
Everything stock.
I don't recall even having vtec even before the swap.
Uploaded pics in the bottom...

We even grounded the vtec oil pressure switch... No luck... I just don't hear or feel vtec at all whether it's 1st 2nd or 3rd or any gears....

Recently got my alignment done by a guy at firestone who also had the same prelude. We went to test drive while I was in the passenger seat, told him to see if we can hit vtec. He also said he doesn't feel the vtec...

Weird...

Can anybody ask me the right questions to maybe make this diagnosis easier ??





Last edited by wasabi4u; 10-08-2017 at 02:40 AM.
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Old 10-06-2017, 01:59 AM
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Re: H22a4 Prelude 97. Vtec WONT kick in yo...

Here's a map
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Old 10-08-2017, 01:38 AM
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Re: H22a4 Prelude 97. Vtec WONT kick in yo...

do you have enough oil there? oil pressure (sensor working there?) activates vtec and of course your car needs to be at operating temperature (those sensors working ok?).
have you check'd/cleaned vtec solenoid? when is your valves last time adjusted?

did it just stopped working or was there something done when it started?

anyway - you shouldnt use base map for driving, its just starting point to get correct tune
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Old 10-08-2017, 02:13 AM
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Re: H22a4 Prelude 97. Vtec WONT kick in yo...

Quote:
Originally Posted by TypeT View Post
do you have enough oil there? oil pressure (sensor working there?) activates vtec and of course your car needs to be at operating temperature (those sensors working ok?).
have you check'd/cleaned vtec solenoid? when is your valves last time adjusted?

did it just stopped working or was there something done when it started?


anyway - you shouldnt use base map for driving, its just starting point to get correct tune
Oil for sure topped off to max line.
How to check oil pressure sensor without a CEL?
Temperature sensor FOR SURE good. Thermostat new too. Of course the temp gauge also works and fans work good.

Vtec solenoid is very very clean, but I keep having leaks underneath it. Dizzy o ring no leak. No leaks above vtec solenoid so I don't think it's cam plug. Valve cover all new.

Valve adjustment? I would say after my cylinder head job like 1 year ago.... Oil pan gasket new.. valve cover gasket new... Valve seals new...

A mechanic said he tested all my wires and they all work to the ECU. He disabled vtec pressure switch by grounding it to d22 in ecu but no difference. His theory is engine?

uploaded a few pics up top..

your prelude is very nice btw.. saw your page.. damn..
You have done SO MUCH work on that car. Honestly i spend so much money on this car already but its still being a pain in the ass... Honestly OVER 10,000$ already. ***k man.

Is there a way to add you somewhere easier to communicate? I would like to send videos, etc, and try to record myself driving car.
Maybe send it through facebook. idk man. To send more pics of the car.
I dont know many people or mechanics who will know the ins and out of a prelude.. I was hoping you might be able to help me out.. but man typing in forum is hard to explain everything.

I am not very knowledgable with cars, just basics.
I dont even know where to put the car on dyno to tune while using my chipped p28 ECU...

Honestly i want to use my old p13 ECU but currently it is stuck as "automatic" since i did auto to manual swap...

Last edited by wasabi4u; 10-08-2017 at 02:50 AM.
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Old 10-08-2017, 02:23 AM
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Re: H22a4 Prelude 97. Vtec WONT kick in yo...

pictures...
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Old 10-08-2017, 02:24 AM
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Re: H22a4 Prelude 97. Vtec WONT kick in yo...

pics # 2
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Old 10-08-2017, 07:01 AM
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Re: H22a4 Prelude 97. Vtec WONT kick in yo...

Quote:
Originally Posted by wasabi4u View Post

A mechanic said he tested all my wires and they all work to the ECU. He disabled vtec pressure switch by grounding it to d22 in ecu but no difference. His theory is engine?
when I was doing OBD1 swap this solved the problem:

"to disable Code 22 you must connect a wire between pins A4 and D6 on the OBD1 ECU"

Quote:
Originally Posted by wasabi4u View Post
I am not very knowledgable with cars, just basics.
dont get me wrong - Im not any mechanic either, but when theres been some problem(s) with my car I have done some research myself that I could point mechanics towards correct answers (usually they havent been honda experts)
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Last edited by TypeT; 10-08-2017 at 07:04 AM.
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Old 10-08-2017, 02:59 PM
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Re: H22a4 Prelude 97. Vtec WONT kick in yo...

Quote:
Originally Posted by TypeT View Post
when I was doing OBD1 swap this solved the problem:

"to disable Code 22 you must connect a wire between pins A4 and D6 on the OBD1 ECU"



dont get me wrong - Im not any mechanic either, but when theres been some problem(s) with my car I have done some research myself that I could point mechanics towards correct answers (usually they havent been honda experts)

Here is a video I posted just for you man.

https://youtu.be/v13UcE8N9Q4
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Old 10-09-2017, 12:43 AM
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Re: H22a4 Prelude 97. Vtec WONT kick in yo...

if there was code 22 and your mechanic just tried to get rid of it by disabling vtec pressure switch - vtec cannot engage?

try to undo that and then try that A4 to D6
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Last edited by TypeT; 10-09-2017 at 12:45 AM.
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Old 10-09-2017, 12:48 AM
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Re: H22a4 Prelude 97. Vtec WONT kick in yo...

Quote:
Originally Posted by TypeT View Post
if there was code 22 and your mechanic just tried to get rid of it by disabling vtec pressure switch - vtec cannot engage?
Oh man I said it wrong. I NEVER had any CEL. What my mechanic did is disabled vtec pressure switch to see if that was the issue. Still no luck... But did you see the video? Would you agree there is no vtec?.

My mechanic work order says "wire vtec pressure to ground on d22 pin on ECU".

In my definition that is his method of disabling pressure switch

Were you able to see the crome p28 h22 stock picture ?.

Honestly, I am starting to think the issue is the p28 ECU because I heard they disable secondary IAB, knock sensor, o2 sensor, etc. So maybe because my prelude is all stock except aem intake and skunk exhaust, maybe it's not good ECU.

My problem is I have my old automatic p5m ECU but need to convert to manual. I don't know who is good with soldering .

I also have a manual p5m ECU at hand, but I do not have red keys to my car. I don't know how to use this..

Also before the manual swap, my car used to get random knock sensor code with p5m. After manual swap, my previous mechanic used the p28 ECU to skip having to convert the obd2 ECU.

Last edited by wasabi4u; 10-09-2017 at 12:53 AM.
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Old 10-09-2017, 03:03 AM
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Re: H22a4 Prelude 97. Vtec WONT kick in yo...

Quote:
Originally Posted by TypeT View Post
if there was code 22 and your mechanic just tried to get rid of it by disabling vtec pressure switch - vtec cannot engage?

try to undo that and then try that A4 to D6
This is a lot.. just copied and pasted from excel.. color coded as best as I could. Did not highlight parts individually.. too much work... Please skip to bottom to see total...
green = parts
blue = labor
red = total
Date Mechanic/Shop Description Parts Labor Remarks
1-May-2014 Albert Ingition Coil Oreilly 69.99
Access Relay Oreilly $55.99
Control Module Oreilly $80.29
Distributor Oreilly $219.99
Igntion Switch Oreilly $53.13
1-Jul-2016 BOUGHT CAR $3,500.00 220000mi
1-Oct-2016 Ronald Power Steering Pump Oreilly $124.00 $2,000.00 225,000mi
GEORGIA Gates Timing Belt $17.99
Gates Tensioner $50.00
Head Gasket Kit + Valve Stem Fel Pro $130.00
ARP Studs $180.00
K&N RU-4870 Universal Rubber Filter $51.35
Beck Arnley 173-7988 Ignition Rotor
MAHLE Original KL 287 Fuel Filter $17.00
Genuine Honda (37240-P13-013) Oil Pressure Switch Assembly $30.38
Pioneer DEH-X6800BT CD Receiver, $94.99
Moog RK620642 Control Arm/Ball Joint Assembly
Moog RK620641 Control Arm and Ball Joint Assembly $90.46
Kenwood KFC-1665S 300-Watt 6.5-Inch
Kenwood KFC-6965S 6 x 9 Inches 3-Way 400W Speakers $50.93
2 of Denso 234-4092 Oxygen Sensor $54.98
Lower Ball Joint moog x 2 $49.30
2 of Moog K750272 Stabilizer Bar Link Kit $35.00
Bando 6PK1040 OEM Quality Serpentine Belt $10.80
NGK SPARK PLUGS DOUBLE IRIDUM AUTOZONE $28.00
SurTrack HO-8087 CV Axle Shaft $52.78
SurTrack HO-8148 CV Axle Shaft $60.60
Bando 4PK1015 OEM Quality Serpentine Belt $9.72
ACDelco 45A7080 Professional Rack and Pinion Boot Kit $15.06
ACDelco 45A7050 Professional Rack and Pinion Boot Kit $16.78
Stant 14128 Thermostat - 180 Degrees Fahrenheit $12.41
Dayco 70806 Curved Radiator Hose $13.19
Dayco 71478 Curved Radiator Hose $13.19
Honda Prelude Transmission Motor Mount 2.2L 2.3L $32.19
Eagle BHP For Honda Prelude 2.2 2.3 L Front Right Engine Motor Mount $23.73
Honda Accord Honda Prelude Engine Motor Mount 2.2L 2.3L Rear $35.76
Wagner ThermoQuiet QC537 Ceramic Disc Pad Set, Rear $25.78
Dorman 911-751 Speed Sensor $36.88
KYB STRUTS Excel G $196.00
Floor Mat $49.99
Wiper Turn Signal $30.00
1-Jul-2017 Ronald Tranny Swap $1,500.00 188000mi
GEORGIA Donor Car $700.00
Uhaul $350.00
Misc $600.00
exedy clutch + flywheel $149.00
Mike Viper Alarm $198.00 $250.00
All weather floor mats $20.00
Cargo Mat $16.00
Radiator Cap $14.00
Moog EV800296 Tie Rod End x 2 $40.00
Moog ES80682 Tie Rod End x 2 $60.00
Ishino Engine Oil Pan Gasket $8.56
Gates 22182 Upper Radiator Hose $15.53
Tein Springs $180.49
denso radiator $58.78
Gates 22181 Lower Radiator Hose $19.55
EXEDY MC234 Clutch Master Cylinder $25.48
EXEDY SC642 Clutch Slave Cylinder $16.86
anzo bumper light $24.99
spyder head light $209.08
spyder tail light $93.22
NGK (8019) HE65 Premium Spark Plug Wire Set $46.68
NGK (6441-4PK) Iridium IX Spark Plug, (Box of 4) $28.39
Bosch Wiper Blades $34.00
Accord Tranny + install $150.00 $300.00
7-Sep-2017 Firestone Full Maintenance, Oil Change, Inspeciton, Alignment, Rotation $50.00 191,000mi
CALIFORNIA
1-Sep-2017 Syncrotech Tranny Rebuilt Trans Unlimited Miles Warranty or 12 months $1,300.00
Nastie garage Installation $250.00
Wire Vtec Pressure to ground on D22 Pin on ECU $10.00
VTEC Solenoid Gasket Leak $30.00
Cali Love Sticker $5.00
7-Oct-2017 Israel Window Tint Rear Window 15, Rear Sides 15, Front Sides 35 $160.00
WinTek Tint
7-Oct-2017 Self SeaFoam Spray Intake $8.00
8-Oct-2017 Costco Interstate Battery CCA700 $92.97 Self Installation
$8,998.82 $5,155.00 $14,153.82
PARTS LABOR TOTAL COST
Honda Prelude 1997 Maintenance
Total
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Old 10-09-2017, 03:17 AM
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Re: H22a4 Prelude 97. Vtec WONT kick in yo...

you have OBD2A to OBD1 jumper harness there right?

you shouldnt need to (re)wire vtec pressure switch to...well anywhere. Just use jumper harness and correct settings from whatever software youre using there. I think this is vtec wiring/software related mixup what you have there

Before Hondata (with just chipped P28) mine needed that pin trick to work properly but now with Hondata its easier when you can control everything through software

and if its software/map related problem - find some tuner there who can adjust the settings right.
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Last edited by TypeT; 10-09-2017 at 03:21 AM.
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Old 10-09-2017, 10:14 AM
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Re: H22a4 Prelude 97. Vtec WONT kick in yo...

Quote:
Originally Posted by TypeT View Post
you have OBD2A to OBD1 jumper harness there right?

you shouldnt need to (re)wire vtec pressure switch to...well anywhere. Just use jumper harness and correct settings from whatever software youre using there. I think this is vtec wiring/software related mixup what you have there

Before Hondata (with just chipped P28) mine needed that pin trick to work properly but now with Hondata its easier when you can control everything through software

and if its software/map related problem - find some tuner there who can adjust the settings right.

I don't know if there is a jumper harness. If there is one where located? Is it mounted right on top of the harness for the ECU? If I try to convert to obd2 again, can I remove jumper harness and then plug in obd2 easily ?
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Old 10-10-2017, 03:28 AM
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Re: H22a4 Prelude 97. Vtec WONT kick in yo...

passanger side - behind "foot rest" - you need to remove the carpet and foot rest bolts, ecu is attached to foot rests other side

http://i.imgur.com/4PFgsH7.jpg

see if theres anything made to the harness - you should probably undo if theres something and start from there
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Last edited by TypeT; 10-10-2017 at 03:32 AM.
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Old 10-11-2017, 09:57 PM
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Re: H22a4 Prelude 97. Vtec WONT kick in yo...

Quote:
Originally Posted by TypeT View Post
passanger side - behind "foot rest" - you need to remove the carpet and foot rest bolts, ecu is attached to foot rests other side

http://i.imgur.com/4PFgsH7.jpg

see if theres anything made to the harness - you should probably undo if theres something and start from there
thanks man you are the only one that ever replies in this forum!
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Old 10-11-2017, 11:12 PM
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Re: H22a4 Prelude 97. Vtec WONT kick in yo...

Quote:
Originally Posted by TypeT View Post
passanger side - behind "foot rest" - you need to remove the carpet and foot rest bolts, ecu is attached to foot rests other side

http://i.imgur.com/4PFgsH7.jpg

see if theres anything made to the harness - you should probably undo if theres something and start from there
Actually... If vtec truly didn't work... Then wouldn't my car be able to hit past 7k? Because if my car pushes through 8k that means vtec is for sure working ? Because no vtec will red line vehicle under 6k??
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Old 10-12-2017, 01:25 AM
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Re: H22a4 Prelude 97. Vtec WONT kick in yo...

dude you need to check the electrics/wiring and then get proper tune (map) for your car. dont try or even think anything else. theres no short cuts
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Old 10-12-2017, 07:22 PM
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Re: H22a4 Prelude 97. Vtec WONT kick in yo...

Quote:
Originally Posted by wasabi4u View Post
Actually... If vtec truly didn't work... Then wouldn't my car be able to hit past 7k? Because if my car pushes through 8k that means vtec is for sure working ? Because no vtec will red line vehicle under 6k??
No. A 6K limiter is limp mode.

You can go all the way to the normal rev limiter on a cold engine, or with low oil, and VTEC will not activate, as it needs both of those conditions to be met before activating. I wouldn't recommend doing this, but, it is possible, to achieve the full rev range without VTEC engaging.
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