OBI

I swaped what I thought was a 99 civic ex motor inot my 97 civic ex, but it tured out to be a dx motor. The honda salvage yard said it was a 99 civic ex motor with 48k miles. So we just used the wireing harness from the old motor. When I got the car back it ran great for a while then it started to loose power. It was like a dead spot in the lower rpms at first then started to happen more often. And the motor was drinking coolant. So I had the headgasket replaced. now its doing the same thing. It looses power then the power comes back (feels like no gas for a while) and it diong this much more often. Sometimes I think the car is going to cut off. What do you think is wrong? Also I got smoke coming out the tail!

__________________
D16y8 (SOHC 97 civic EX), JRSC, DC Sports Header, Custom exhaust, AEM short ram intake, Tokico shocks, Eibach Springs, DC Sports front/rear strut bar and lower rear tie bar.

I want to do a swap!

smooth_criminal

didi you also change ECU's Because your 97 is OBD2a and the 99 is OBD2B. Also with this differance there are two sensors that should have been rewired. Unless you changed with harnneses.

__________________
You hate me because i'm different;
I hate you because your all the same!
G-Driver.

OBI

No we did not chang the ecu. the guy who did the install noticed it was a dx motor with the dx wiring harness. so he put the 97 ex wiring harness on. he said that all the sensors or on the fire wall so the ecu is still compadable with the new motor and of corse the origginal wiring harness.

__________________
D16y8 (SOHC 97 civic EX), JRSC, DC Sports Header, Custom exhaust, AEM short ram intake, Tokico shocks, Eibach Springs, DC Sports front/rear strut bar and lower rear tie bar.

I want to do a swap!

integraswap

if it was swapped right check your new swapped motors sound like its a fuel preessure problem or fuel injectors its worht a look

brian11to1

you have no clue do you?

OBi did you go pick the enigne up? an EX engine has VTEC there for theres a VTEC solenoid on the side of the head on the passengers side towards the rear. How could you miss that?

I got an idea put the old engine back in and call the yard and ask them what can be done about getting the wrong engine. Also what color is the smoke? You most likely have blown rings, were there any papers withthis engine, or were you to excited to get it swapped to check for details... such as a VTEC Solenoid.

also who did the headgasket? maybe he didnt do it right? Check to make sure you arent misfiring. Any CELs? if so whats the code

Put your old engine back in.

__________________
90 Integra Sedan
B20V 225 / 153
I DO NOT answer tech questions via PM. Use the forums!!!

Import R

Indeed, if I paid for a vtec motor and got a DX i would be super pissed and would demand to have the correct engine. I'd be even more pissed if the wrong motor was all busted up like yours appears to be. Bring it back and get what you paid for.

StealthMode

my car was doing the same power loss thing. i have a d16z6 head on my d15b8 block. anyways, my IAC valve went to hell, and my idle started fluctuating up and down and when i would start it, it would idle at like 3000 or 3500 before it started to fluctuate. i bought a jdm intake manifold because it was cheaper to get a whole new manifold instead of the $200+ Idle Air Control valve. took care of my gay ass idle and power loss problems.

seems like you should pull the motor and get the vtec one.

__________________

OBI

Thanks I'm goign tot were I bought the motor from tomorrow. I will let you know what happens.

__________________
D16y8 (SOHC 97 civic EX), JRSC, DC Sports Header, Custom exhaust, AEM short ram intake, Tokico shocks, Eibach Springs, DC Sports front/rear strut bar and lower rear tie bar.

I want to do a swap!

HelixB18C1

yes thers a big ol selenoid on the upper left side of the valve cover