I have a 1990 Honda Accord and Im about to do a f22b1 sohc vtec swap, but I cant seem to find a thread that is answering my question. Basically I want to know if I can do the swap and just wire up vtec normally like you would do with a gsr or something or do I have to get the 90-97 Accord to F22b-VTEC harness from rywire in order to wire up the vtec? CAN SOMEONE HELP ME ASAP. THANKS

 

You don't need to order a special harness. You can add the wires yourself if your handy. I don't know exactly what it takes to add VTEC to a GSR. But to add VTEC to an Accord you need a VTEC ECU and to run the wires to the VTEC solenoid & Pressure Sensor.

Note:The 96-97 F22B1 OBD2 VTEC Accord does not use a VTEC pressure sensor.

There are a few other wiring issues that you may bump into though. The CKP & TDC sensors on OBD2 F22B1 engines are located down on the oil pump housing not in the distributor like the OBD1 F22B1s. This may also be included in the Rywire harness??????

Question is, How handy are you with reading wire diagrams and cutting and splicing wires and adding connectors? These are a few things you may bump into depending on what year/OBD the engine you have is.

 

Okay the motor that I have is obd1. And I'm pretty handy with reading wire diagrams and cutting and splicing wires. So basically all I need to do is get the vtec ecu, run the wires from the vtec solenoid and pressure sensor to the proper pins on the ECU?

 

You got it!

 

Alright cool Thanks Alot man.

 

Its not hard at all. Its simple but just takes time. GL.

 

Hey one last question. Can I use the f22a1 engine harness on the f22b1 since im gonna wire up the vtec myself?

 

how did you hook up the vacuum lines i cant figure it out to save my life and i'm running to rich its in 91 accord ex

 

i to would like to know how to hook up vacuum my swap is running way to rich and can not find or figure out how to hook up the lines

 

It depends on what vacuum actuated systems you have kept in your car and what OBD the engine you have swapped in is.

Here is the vacuum diagram for a 94-95 OBD1 F22B1


If there are any systems shown above that you are not using, simply plug the vacuum port that is shown as being used.

 

i got the vacuum for the 91 and also wondering since its running rich would the map sensor on the t/b be better to hook up and how to run it on 91 accord ecu

 

The throttle body mounted MAP sensor would be the better one to use. All you need to do is connect the 91 MAP wire connector to the T/B MAP for it to work. The ECU - MAP sensor wiring doesn't change, however, you may need to extend or pull out the 91 MAP wiring. As it may not be long enough to reach the throttle body mounted MAP sensor.

 

my map sensor at least i think it is is mounted to the firewall right.well it only has two wires and the map on throttle body has 3

 

The MAP sensor on your USDM PGM-FI 91 Accord should have a round 3 wire connector, (+) 5v , (+) signal & (-) ground.

What ECU are you using to run your F22B1?

 

the f22a6 but i'm thinking that my problem even tho alot of fourms says it will run it fine.its acting like my f22a6 didi before it blew up

 

i just went out side and double checked the map plug and its a two wire plug not a three

 

ok i was messing with it today and my engine light came on let it run for bout 20 min. so i code searched and getting a 5 which is map sensor but like i said mine is a two wire and on t/b its three.code 14 which is iac so my question is how would i go about wiring them in.any and all help would be great.

 

3 wire MAP


YEL/WHT = D19 sensor 5v ref (+)
GRN/WHT = D21 sensor ground (-)
WHT/YEL = D17 sensor signal (+)

IAC



BLK/BLU = A9 sensor ground (-) (ECU)
YEL/BLK = A25 or B1 sensor, with ignition on = battery voltage (+)

 

man thanks for all the help my sh*t was all messed up i got it my buddy had my map sensor wires cut. and my iac wired backards. thanks your posthelped me alot through the swap.mow my next task it to wire vtec but i'm broke and not going to get a ecu. would you know how to wire it from a shift light on a tach to a realy.thanks

 

No problem glad it was helpful to you

In theory that would work. However, without the VTEC ECU when you switch to the VTEC via a relay. The fuel and ignition maps in the ECU will not change to compensate for the increase in air. This could cause the engine to run lean and possibly overheat the pistons. I would wait until you can get a VTEC ECU.

 

easier to just use the f22a manifold for the swap...have done it b4

 

is there any way you sould help me. got the ecu and car is running great.now my problem is wiring vtec. is there any way you could let me know what wires go where and what color they are.and is it true i have to swap pins around any help would be great

 

i have purchased a 1997 accord 5 speed that had a 16 valve engine and i converted it to a 1996 2.2 v-tec engine but dont know how to wire the v-tec. i purchased a 1997 2.2 v-tec automatic i know this will keep the check engine light on but still will need to wire the v-tec up. i cant find a 5 speed v-tec out there. can anyone help thanks . 97 accord 2.2 v-tec upgrade can someone send me a wiring diagram or something that can help this car to wake up

 

alright what you should get is an ecu (computer) from a 94-97 accord ex vtec.all you have to do is run 3 wires. i know that one goes to a4 and the other to d6 the last one is a ground.google a f22b1 ecu pinout that will tell you everything you need to know. i did my swap in a 91 but should be the same.its late so i cant do tonight but if you need more help email me at big_b45044atyahoo.com

 

i tried to email you but wouldnt go thru from the email yoiu gave me so i changed the at to @ before yahoo and sent it that way. really would like to hook up the v-tec like yesterday thanks bro