Problems

I love my civic to death just put a new motor in it from a 97 civic but anyways now im having idling problems..When i crank it up it dose fine but when i put it in gear and ease off the clutch it dies down like its ran out off gas..I dont know whats wrong with it...and also when i get ready to take off i have to ease off very slow or it will die dow and when i get up to like 25 in 1st it jerks and slows down and it slows down going up hill...So im going to give it a tune up but other than that i would love some help.....

I love my civic to death just put a new motor in it from a 97 civic but anyways now im having idling problems..When i crank it up it dose fine but when i put it in gear and ease off the clutch it dies down like its ran out off gas..I dont know whats wrong with it...and also when i get ready to take off i have to ease off very slow or it will die dow and when i get up to like 25 in 1st it jerks and slows down and it slows down going up hill...So im going to give it a tune up but other than that i would love some help.....

No check engine light?

are you using the gas pedal?
it slows down going uphill cause you ain't got enough power. lol

NO check engine light is coming on...and i thought you all were supose to help not be funny.

oh yea we forgot no fun allowed..read the hidden sticky..

id say check your injectors and maybe clean them just as an idea. idk since it didnt throw a code. is your car idle steady? im wonderin if your throttle cable could be too loose.

Well got in it today after school to crank it up and it threw 1,3,8,16,18.....so now what do i do??

i'm sorry i couldn't help my self. i apoligize.

uh bambam or some else should have those codes for you. i deal with obd-0 b series so i don't know. gl with your car. hope everything goes well.

First of all are you running the motor obd0? What ecu are you using? Is the motor running on mpfi or dpfi? As for codes, 1 is O2 sensor, 3 is map sensor, 8 is TDC, and 16 is fuel injector. I'd say make sure all your vacuum hoses, especially those running from your map sensor, are hooked up properly. What exhaust manifold are you using? Do you have an o2 sensor hooked up?

Other than that check your timing out, and make sure its correct. It would help out a lot more if you told us your exact set up, obd, ecu, # of o2 sensors, intake mounted MAP sensor or firewall, etc...

I fixed it it was a vaccume hose. Thanx

well basicly what it sounds like is you have a series of unfortunate events. sounds liek an inejctor went bad or isnt wired properly and your timing belt isnt on right. i.e. skipped notches. but i do have a weird question how are yo ugetting a code 18. my manuals dont account for that.

Well got in it today after school to crank it up and it threw 1,3,8,16,18.....so now what do i do??

having a vaccuum hose in the wrong location isn't going to throw a code 1, 8, or 16. Reset the ecu, drive the car, and see if any cel's still come up. I'm sure just by fixing the misplaced vaccuum hose problem didn't rid you of all those codes. And as for the 18, i've never heard of that either. Double check your cel's again. 1 long blink = 10
1 fast blink = 1
add 'em up.

How do i reset my ecu....dissconect the Battery right....and yea its not just the vaccume hose cause i started back having problems today.....If i barly press the gas it will take off fine but if i gun it then it dies down and shuts off......then while its idleling its fine but then itll go really low and stay there and then shoot back up...then if i tap the gas the rpms...shoot up really high and stay there for a while...then if i pull the gas pedal back it will die down some and then do it all over again.....I want to sell it but i love it to much....so im not...

I just reset my ecu and now the only thing its throwing is 3

I just reset my ecu and now the only thing its throwing is 3

Ok, this is how the vacuum hoses go for the Map sensor. There is a little black box on your firewall with a 3-wire plug going to it. It should be a Yellow/Red, Green/White, and White plug. Okay, there is a vaccuum hose coming off the bottom of it and it should lead to a "T". On the right side of the "T", it SHOULD be blocked off. Just stick anything in there, even a screw will work fine. The other end of the "T" should be a vacuum hose that leads to a nipple on your throttle body. What intake manifold and throttle body are you using anyway? Because if it's an OBD1/2 TB then you just plug the map sensor into the throttle body and get rid of all the vaccuum hoses.

IM using the stock intake manifold and throttle body from the d15b2 motor..I have an accord with a messed up body. Can i take the intake manifold off there and use it for mpfi..

IM using the stock intake manifold and throttle body from the d15b2 motor..I have an accord with a messed up body. Can i take the intake manifold off there and use it for mpfi..


No the intake of an accord's F20 motor wont bolt up to your d-series. But do as bambam said and check your MAP sensor hoses. Also try replacing your MAP and see what happens.

well changed the vacuume hoses and it didnt make a diffrience.....but ima get another civic same year its just a automatic and them ima take the one now and change it over to MPFI and get turbo and all that and leave the body stock and just use the new one im getting to get back and forth to work....

well changed the vacuume hoses and it didnt make a diffrience.....but ima get another civic same year its just a automatic and them ima take the one now and change it over to MPFI and get turbo and all that and leave the body stock and just use the new one im getting to get back and forth to work....

If you would explain your setup a bit better, then it would be easier for us to designate your problem. So far you've only said your using a stock dpfi intake. What distributor are you using? What ecu? What OBD system are you running? If these things aren't coordinated properly, your setup will run like ass. Also before you go turbo, you'd better make sure it runs straight and isn't popping codes all over the place.

Everything in the car is stock all i did was put the head and block from a 97 civic. and everything is completly stock. Everything.

How do i reset my ecu....dissconect the Battery right....and yea its not just the vaccume hose cause i started back having problems today.....If i barly press the gas it will take off fine but if i gun it then it dies down and shuts off......then while its idleling its fine but then itll go really low and stay there and then shoot back up...then if i tap the gas the rpms...shoot up really high and stay there for a while...then if i pull the gas pedal back it will die down some and then do it all over again.....I want to sell it but i love it to much....so im not...

AHHH i had the same problem with my nitro car... kind of radom but yea:licka:

IM using the stock intake manifold and throttle body from the d15b2 motor..I have an accord with a messed up body. Can i take the intake manifold off there and use it for mpfi..

No. It won't bolt up as the bolt pattern is different. It has to be from the same motor family "D" series. Just follow the diagram under your hood then for the vacuum hose routing.

The only code its throwing now is 3 i think thats the MAP sensor. So now what do i do..Just buy a new one?

Well im fixing to get another car 90 civic sedan. But im going to keep the one i have now the 5spd and im going to drop another engin in it a ZC so can someone tell me everything i will need besides the engine..I know im going to have to convert to mpfi but do i have to convert to obd1 or can i keep it obd0 still??

Well im fixing to get another car 90 civic sedan. But im going to keep the one i have now the 5spd and im going to drop another engin in it a ZC so can someone tell me everything i will need besides the engine..I know im going to have to convert to mpfi but do i have to convert to obd1 or can i keep it obd0 still??


You can drop a SOHC ZC without converting to obd1, just run it obd0. As far as i know, its a direct drop in aside from the mpfi swap. Make sure you use a d-series tranny, stock shift linkage, Si/zc dizzy, same mounts, etc. Your biggest concern is the mpfi swap, which shouldnt be that hard if you follow the instructions closely.

but if i wanna drop a dohc zc i have to convert to obd1???

but if i wanna drop a dohc zc i have to convert to obd1???

No, you can stay obd0. With a DOHC ZC, the only extra thing you need to convert is the wiring at the ditributor, for the CPS wires. Not a biggy, pretty much plug and play.

http://www.fourthgenhatch.net/zc.html

so i will have to get diffrient axles?

so i will have to get diffrient axles?

Why dont you try reading the link i gave you before you keep on asking questions. Honestly, its in like the first few lines of the writeup. Scroll down to the middle and it'll show you the dizzy wiring.

ZC's are considered d-series engines, any d-series tranny will bolt up to it. The axles you use depend on what tranny you decide to use. If its an Si/dx/ex tranny, you use dx/ si axles.

In your sedan, i'd imagine you'd be using either a dx or ex tranny. In either case you would need to use dx/si axles.

but if i wanna drop a dohc zc i have to convert to obd1???

It doesn't matter what motor you put in your car, you can run it with OBD0 electronics.

I tried reading the link you gave me the axles just got me confused though. The best transsmission to get with this motor is the SI tranny. So that means i would have to get Si axles. Also if i get a ZC engine and everything on it like distributor and intake do i still have to get a si distributor and intake to do the mpfi swap or can i just use the one on the motor and if so what wireing harness do i need to use and best ecu for this motor?

Yea, if your gonna run an SI trans (good luck finding one), you need si/dx axles. Also, if your ZC (either DOHC or SOHC) comes with intake and dizzy, you can use the ZC intake and dizzy in your car. You dont need to pick up an intake and dizzy for an Si, use what comes with your motor.

As for the wiring harness, use your stock wiring harness and rewire it to accomodate the swap. Do not try to use the ZC harness or try picking up an Si harness, it won't work. You can use the ZC harness provided to you for extra clips and wires for your stock harness. For the ECU, i'd say run a PM6 Si ECU.

Once again, look at the link, its really helpful and all this is already covered.
Here are some more helpful writeups that you'll be using for your swap.

http://www.fourthgenhatch.net/mpfi.html

http://www.fourthgenhatch.net/axle.html

So your saying use my stock harness and just use the zc wire harness to modify the stock one. How do i do that?

So your saying use my stock harness and just use the zc wire harness to modify the stock one. How do i do that?

you take your two harnesses and two wiring diagrams and follow every wire from point A to point B, if a wire is the same on the DX harness, leave it, if it's in a different spot on the ZC engine, move it on the DX harness to accomodate.

OK i think i got it.. Thx for all the help.

Also eventally im going to turbo this zc motor will it be good for turbo or not a good idea cause i dont want to blow it up.

OK for now my engine is still the same but its now throwing 3,7,13 so what do i do? Also will a intake manifold from a 95 civic work the same as the one from a 88 civic si and then get everything els like normal?