EGR valve or not??? on a 95civic ex D15B

D15, D16, D17 and Mini-Me swaps
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EGR valve or not??? on a 95civic ex D15B

By 95civicdi15bphx
- Thu Apr 07, 2011 3:46 pm #248925 :? hey guys ill be the first to say it, im a newb. i got a 95 civic coupe. title says cex so i guess its an EX. is got a SOHC and "lightspeed sport tune" headers. other than that and a decent aftermarket intake, it apears stock. i statred doing a tune up and changed oil, oil filter, pcv valve, spark plugs, and wires. the pcv valve i got was straigt and i read online i should replace with one that is the same as i take off. so i returned to autozone and asked a different associate. he tried looking up the 96 civic and found a pcv valve that looked like the one off of my car. i bought it and replaced. as i was working on it i noticed the engine code was "D15B" and thats it. i thought it had to have another number after the B. ??? might the engine have been swapped??

i took the car to emissions and it bareely did not pass. the car had high HC and NOx readings. one of the solutions was to replace EGR valve. so i purchased EGR for a 96 civic and it was too big and did not fit. (car did not come with one. instead it had a "block off" plate.) i went to junkyards and found the egr for 95 engine and it looked different and all were seated on to p of the engine. the location on my engine is behind the distributor on the passenger side and is horizontal towards firewall. (is this the spot for the EGR???)

i was not able to find any connector close to this location so that i could connect EGR to the main wiring harness.

this brings me to think this car/engine does not need an EGR??? :? i will try and post a few pics here later. im really lost and the person who had this also took out A/C and cut a few wires.

please help with any thoughts on what to do, besides gettin another car.

thanks
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By teal_dx
- Thu Apr 07, 2011 4:17 pm #248933 The 92-95 civics that had an EGR valve were the VX models which had a 1.5L vtec-e motor, D15z1.
It sounds like Autozone gave you the EGR from a 1996 Civic HX, also a vtec-e motor, D16y5.

Your motor, the JDM D15B, never had one to my knowledge. (The D15B 3-stage vtec version had one)

So I would look into other things besides the EGR to lower your emissions.

Here's a thread with a lot of info that will help:
http://civic-eg.com/viewtopic.php?t=4679

here are some pics to help.

By 95civicdi15bphx
- Thu Apr 07, 2011 4:29 pm #248935 okay here are a few pics to help. one is to show engine overall, one shows D15B code on block, one shows the two bolts coming out of the block (where i think the egr valve MAY go??) -underneath the blue cables, and the other pic shohs the pcv valve and location.

is this a typical D15B engine? does it have a swapped head? let me know what you guys think.

thanks for your help.

[img][img]http://i1102.photobucket.com/albums/g447/mrw0rldwide/100_1083.jpg[/img]

[img][img]http://i1102.photobucket.com/albums/g447/mrw0rldwide/100_1085.jpg[/img]

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[img][img]http://i1102.photobucket.com/albums/g447/mrw0rldwide/100_1087.jpg[/img][/img]
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By teal_dx
- Thu Apr 07, 2011 6:07 pm #248959 The head is a non-vtec head (looks like a d15b7 head) on a JDM D15b block
THere are also non-vtec JDM D15B's so maybe that's what you have.

Swapping this motor into a EX model originally equipped with a D16z6 vtec engine is a step down. The previous owner must have wanted to get this car running as cheaply as possible.

EGR valves are always on the intake manifold (that I have seen) so that block off plate is not for the EGR valve. The area where that plate is attaches is normally where the vtec solenoid would go on a vtec head. Strange that it is there...

thanks

By 95civicdi15bphx
- Thu Apr 07, 2011 7:04 pm #248969 :thumb: thanks for all your help, ive been very lost with all of these swaps that guy had done.

im going to seafoam the engine and do a coolant flush, hopefully it passes emissions. ill let you know.

later down the road im going to have to do a decent engine swap to get a better engine. any ideas or suggestions besides the D16z6?

By 95civicdi15bphx
- Thu Apr 07, 2011 7:19 pm #248973 hey teal i just thought of something.

is it possible to put a vtec head on this and then it would be a JDM D15B VTEC?

maybe this guy did not get the VTEC head and just slapped the d15b7 head in its place. (or the Vtec head on this engine was shot and did a quick, cheap replacement.) then it would make sense of the block-off plate being there.

once the VTEC head goes in, i would just place the VTEC solenoid, right?

OR do you think the D16Z6 is still better than this idea?

thanks bro
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By OleFolk
- Thu Apr 07, 2011 7:49 pm #248976 Damn that sucks, d15b head will be hard to find
throw a d16z6 head on that block asap
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By teal_dx
- Thu Apr 07, 2011 8:04 pm #248977
95civicdi15bphx wrote:hey teal i just thought of something.

is it possible to put a vtec head on this and then it would be a JDM D15B VTEC?

maybe this guy did not get the VTEC head and just slapped the d15b7 head in its place. (or the Vtec head on this engine was shot and did a quick, cheap replacement.) then it would make sense of the block-off plate being there.

once the VTEC head goes in, i would just place the VTEC solenoid, right?

OR do you think the D16Z6 is still better than this idea?

thanks bro


I'm not 100% sure about that bottom end... since there were both vtec and non-vtec versions of the jdm D15B, the non-vtec version may have slightly smaller bearing journals and thinner rods, similar to our non-vtec D15b7. So putting a JDM D15B vtec head on that block may not mean you would have a full JDM D15B Vtec motor.

The thing with the block off plate is that this head never had vtec, so there should be no reason to need a blockoff plate. Non vtec heads just have a blank area in the casting, there are no oil passages for the vtec solenoid.

If you bought a vtec head, it would come with the vtec solenoid attached in that spot where you have the block-off plate (unless someone removed it previously which usually doesn't happen when buying a used vtec head)

So you could put a vtec head on and have yourself a mini-me swap. Since your car is an EX, the wires should already be there.

I'm still interested to know why that block-off plate is there... :?

I see you have a 1-wire o2 sensor as well. Those only came on the civic CX I believe. Your engine is a true mutt! What ECU does the car have?

ecu in the car

By 95civicdi15bphx
- Fri Apr 08, 2011 8:22 pm #249175 ok i found the ecu. its a P05-A02.

i did a little research and it looks like its an ecu for 92 - 95 OBD1 Civic CX.

looks like a real mutt :lol:

this guy was piece-ing this sucker from different cars. hopefully it will pass emissions on monday.
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By suspendedHatch
- Sun Apr 10, 2011 2:23 am #249404 That's a non VTEC OBD1 head. The spark plugs are on the intake side. All OBD2s and all VTECs have them on the exhaust side.

On some of the import non VTEC D15Bs, there is a blocked off VTEC solenoid port for some reason. That one has been tampered with. Some idiot probably took it off and tried to put a VTEC solenoid there. That will not work. The solenoid is one small part of the system that makes up VTEC.

You need to get a P06 ECU and then check the ignition timing. Looks like you also need to fix your throttle cable and bracket.

"Check EGR" is a very generic diagnosis and does not apply to Hondas. Almost all American cars have EGR but very few Hondas did, and they had them for an entirely different reason.

not good

By 95civicdi15bphx
- Tue Apr 12, 2011 1:46 am #249842 :x son of a gun!

the answer is - NO, IT DID NOT PASS! :cry:

i will have to do more work to get it to pass.

i have been told that the catalytic converter is the last thing to replace, since it is the most expensive.

seafoam helped a bit but not much. ima check with a buddy of mine who has a civic and i hope he can help.

fix

By 95civicdi15bphx
- Tue Apr 12, 2011 1:49 am #249843 [quote="suspendedHatch"]That's a non VTEC OBD1 head. The spark plugs are on the intake side. All OBD2s and all VTECs have them on the exhaust side.

On some of the import non VTEC D15Bs, there is a blocked off VTEC solenoid port for some reason. That one has been tampered with. Some idiot probably took it off and tried to put a VTEC solenoid there. That will not work. The solenoid is one small part of the system that makes up VTEC.

You need to get a P06 ECU and then check the ignition timing. Looks like you also need to fix your throttle cable and bracket.

"Check EGR" is a very generic diagnosis and does not apply to Hondas. Almost all American cars have EGR but very few Hondas did, and they had them for an entirely different reason.[/quote]

what engine is the P06 ecu for?

will it help out with the emissions?
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By suspendedHatch
- Tue Apr 12, 2011 7:40 pm #249995 Your current ECU is for an 8 valve non VTEC motor with a tiny throttle body. The P06 is for a 16 valve non VTEC with a standard sized D series throttle body... it will run your engine perfectly.

Get the correct ECU before you do anything else.
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