i have a b18a1 engine in my crx hf... and the hoses that come off the control box are labeled 10 16 12 and 21 although i labeled them takign them off the original engine i have no idea where they go and the manual is not being very helpfull...

any help please... pics would be very helpfull but not needed

thank you so much!

******edit******what all do i need for the conversion to obd1 on a b18a engine from a 91 crx hf.... any help please.... hopefully i can keep the pr4 ecu's hehehehe because i have bought a couple lol


Modified by rewerbcrx at 12:35 PM 1/6/2006

 

oh yeah is there suposed to be a map sensor on the 91 crx hf... when i look at the shop manual for the integra 91 engine it shows the hoses goign to and from a map sensor? am i missing somethign here?

 

 

You can save yourself a lot of engine mess if you convert to an obd1 map sensor. They're cheap and they mount directly to the throttle body, then you can remove the whole map/evap assembly on the firewall!

 

help please

 

 

I have a da b18 map sensor for $10 shipped if you want it

 

what all do i need for the conversion to obd1 on a b18a engine from a 91 crx hf.... any help please.... hopefully i can keep the pr4 ecu's hehehehe because i have bought a couple lol

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 2nxcrx &raquo;</TD></TR><TR><TD CLASS="quote">I have a da b18 map sensor for $10 shipped if you want it</TD></TR></TABLE>


wouldn't i need everything over on that side of the wall?

 

.....

 

To do the obd1 MAP conversion, all you would need is an obd1 map sensor and an obd1 throttle body. That's it.

 

PR4 ECU is OBD0 so converting to OBD1 means getting OBD1 ECU as well as OBD1 to OBD0 jumper harness, OBD1 distributor and injectors - just keep it OBD0 and use your HF Map sensor and purge cut-off solenoid that are in the HF control box - just get rid of the EGR items - the only difference between MAP sensors between OBD0 and OBD1 is their location - function is the same

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jlicrx &raquo;</TD></TR><TR><TD CLASS="quote">PR4 ECU is OBD0 so converting to OBD1 means getting OBD1 ECU as well as OBD1 to OBD0 jumper harness, OBD1 distributor and injectors - just keep it OBD0 and use your HF Map sensor and purge cut-off solenoid that are in the HF control box - just get rid of the EGR items - the only difference between MAP sensors between OBD0 and OBD1 is their location - function is the same</TD></TR></TABLE>

okay ... so keeping it obdo is what i think i might do... in my HF i have 4 hoses coming out of the control box on the left... and i dont' know where they need to go ... and then the two hose bungs on teh right side ( looking at IM) in the rear what hooks to those... right now the freaking hose situation is ******* with me lol

 

look at the 3 pictures above - follow the numbers

 

they aren't the same numbers... and there are spots that tubes should be and there isn't a tube for it... does this mean i need to get the integra map sensor and others next to it?

 

on the b18a1 diagram where do the hose lines 1, 7, 20, and 21 hook to on the HF control box ?


it look slike hose 16 on HF gets pluged.. and 21 hooks into TB and i don't know where hose 10 on HF hooks to ... and hose 12 on hf hooks to on the integra motor
and ports 12, 20 on the back of the IM what the f hook sto them from the CRX HF


Modified by rewerbcrx at 4:52 PM 1/6/2006

 

1. Remove control box cover exposing the 4 sensors – throw the cover away if you want.
2. Remove the 2 sensors closest to firewall and throw them away. The one on the left has 2 wires coming out of it that go into a square white connector. Cut those wires right next to the connector. It has a vacuum hose numbered “16” coming off the side. This hose isn’t needed on the B18. The other sensor (on the right) has a vacuum hose numbered “10” coming out of the bottom of the green portion. This hose isn’t needed on the B18.
3. You now have 2 sensors remaining. The one on the left is the MAP. The one on the right is the Purge Cut-off Solenoid Valve. If you are getting rid of the purge system (canister, etc.) you can get rid of the Purge Cut-off Solenoid Valve also. If you are leaving the purge, look at the valve. On the left side, there are 2 wires coming out which go into the same square white connector noted in #2 above. These will remain.
4. The MAP sensor has a vacuum hose coming out of it which is numbered “21”. On the B18, this hose goes to the nipple on the throttle body where “21” is shown on the B18 vacuum diagram. It is the nipple closest to the front of the car.
5. The Purge Cut-off Solenoid has 2 vacuum lines coming off it. One on the right side numbered “7” and one out of the bottom numbered “12”. The one numbered “7” goes to the top nipple on the diaphragm valve on the Purge Canister, as shown in the B18 diagram. The one numbered “12” goes to the back of the intake manifold where shown in the B18 diagram.
6. The B18 has a Fuel Pressure Regulator Control Solenoid which the HF doesn’t have. You will need to get one from a junk yard. It has 2 vacuum lines coming off it. One is on the bottom and is numbered “20” and connects to the back of the intake manifold where shown in the B18 diagram. The other comes off the side and is numbered “1” and goes to the nipple on the top of the fuel pressure regulator.
7. There is a red cloth braided line that goes from the other nipple on the diaphragm valve on the canister to the other nipple on the top center of the throttle body.
8. That is all you need.

That is about as clear as i can make it.

To clean up the installation, you should get a firewall bracket from 88 Si and put all the sensors on it. (or one from B18A1 Integra)

 

PERFECT! THANK YOU SO MUCH!

that was awesome!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jlicrx &raquo;</TD></TR><TR><TD CLASS="quote">1. Remove control box cover exposing the 4 sensors – throw the cover away if you want.
2. Remove the 2 sensors closest to firewall and throw them away. The one on the left has 2 wires coming out of it that go into a square white connector. Cut those wires right next to the connector. It has a vacuum hose numbered “16” coming off the side. This hose isn’t needed on the B18. The other sensor (on the right) has a vacuum hose numbered “10” coming out of the bottom of the green portion. This hose isn’t needed on the B18.
3. You now have 2 sensors remaining. The one on the left is the MAP. The one on the right is the Purge Cut-off Solenoid Valve. If you are getting rid of the purge system (canister, etc.) you can get rid of the Purge Cut-off Solenoid Valve also. If you are leaving the purge, look at the valve. On the left side, there are 2 wires coming out which go into the same square white connector noted in #2 above. These will remain.
4. The MAP sensor has a vacuum hose coming out of it which is numbered “21”. On the B18, this hose goes to the nipple on the throttle body where “21” is shown on the B18 vacuum diagram. It is the nipple closest to the front of the car.
5. The Purge Cut-off Solenoid has 2 vacuum lines coming off it. One on the right side numbered “7” and one out of the bottom numbered “12”. The one numbered “7” goes to the top nipple on the diaphragm valve on the Purge Canister, as shown in the B18 diagram. The one numbered “12” goes to the back of the intake manifold where shown in the B18 diagram.
6. The B18 has a Fuel Pressure Regulator Control Solenoid which the HF doesn’t have. You will need to get one from a junk yard. It has 2 vacuum lines coming off it. One is on the bottom and is numbered “20” and connects to the back of the intake manifold where shown in the B18 diagram. The other comes off the side and is numbered “1” and goes to the nipple on the top of the fuel pressure regulator.
7. There is a red cloth braided line that goes from the other nipple on the diaphragm valve on the canister to the other nipple on the top center of the throttle body.
8. That is all you need.

That is about as clear as i can make it.

To clean up the installation, you should get a firewall bracket from 88 Si and put all the sensors on it. (or one from B18A1 Integra)
</TD></TR></TABLE>

the wires on the Fuel Pressure Regulator Control Solenoid where do i connect them to? or don't i?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rewerbcrx &raquo;</TD></TR><TR><TD CLASS="quote">

the wires on the Fuel Pressure Regulator Control Solenoid where do i connect them to? or don't i?</TD></TR></TABLE>

 

i don't understand this.... its kinda foriegn to me ... sorry ... hard to read too small and blurry...

 

bump

 

the connector has 2 wires - one on lower left is green/yellow, one on lower right is black/yellow - green/yellow goes to ECU pin A10 - black/yellow is power from #14 fuse in underdash fuse box (you could splice it into the black/yellow that goes to the EACV - it also comes from fuse #14)

 

i have this do i need something else? or do i need to do something more? i have teh canister still underneath the control box.....





thanks for trying for ALL of the help

 

yes that is all you need