I have a 93 civic coupe that had a z16z6 motor in it but i blew it up. so I dropped the only thing i could find into it and so i put a d15b7 in it. Everything is fine besides when I start it up the temp is always on cold which im guessing is because its been cold outside in the mornings. but when I put it in reverse it seems to bog down alot and sometimes just cutting off. Also sometimes when i start it up it bogs down really bad and i have to rev the motor so it doesnt die. and after doing that for a little while it is fine. idk if this is a problem that can be fixed or if its normal?? anyone have any ideas? it runs perfectly fine once i can get it going lol

 

What ECU is in it now?

 

not really good at these kinda things. but it is whatever that comes stock in a 93 civic coupe ex

 

could it maybe be my throttle cable?

 

These aren't old V6/V8s that you can simply swap in like puzzle pieces.
Why are you not running the ECU for the new engine?
Are there any CELs?

 

do i need to? is that what the problem is?

 

Why do you think you wouldn't?

Again, any CELs?

 

how do i check the CEL thing? sorry im a nooby.
im thinking its cause of the wrong ecu thats in it... what ecu should i get?

 

Check the FAQs for how to check CELs (check engine lights). Do you actually have any?
YOu pretty much stuck a non-VTEC engine in a car that is supposed to have a VTEC engine in it. Now the VTEC ECU is looking for a VTEC engine which it doesn't see.
D15B7

Found in:
1998-2000 Honda City SX8
1992–1995 Honda Civic CX (Canadian model)
1992–1995 Honda Civic GLi (Australian model)
1992–1995 Honda Civic DX/LX
1993–1995 Honda Civic Del Sol S
1992–1995 Honda Civic LSi Coupe (European Market)
Displacement : 1,493 cc (91.1 cu in)
Bore and Stroke : 75 × 84.5 mm (3.0 × 3.33 in)
Compression : 9.2:1
Power : 102 hp (76.1 kW, 109 PS) at 5,900 rpm
Torque : 98 ft·lbf (13.5 kg/m, 133 Nm) at 5,000 rpm
Valvetrain : SOHC (4 valves per cylinder)
Cam Gear: 38 Tooth
Piston Code : PM3
Fuel Control : OBD-1 MPFI
ECU Code: P06
Head code: PM 9-6
Non Vtec

I must say I'm truly baffled. You swapped in an engine, which is not really an easy task for a "noob" but you don't know anything about CELs?

 

lol wtf yeah, check engine light is on, thats it. i just havnt heard CEL before lol. and yeah, i wouldnt of put that motor in it if i had more time to look for motors. it was all i could find. and i needed it in like 2 days. so i had to do the swap in a day. so P06 is what i need?

 

One for a manual. Not an automatic. Also the same OBD.

Kudos for the swap. You might also want to check the mechanical and ignition timing and do a full tuneup.

 

why would i do one for a manual if my car is automatic? and whats obd? sorry my noob kickin in.

 

This is why you list all details about your car in the first post.

If your car is automatic then get an automatic ECU.

 

lol my bad. i didnt because i didnt think i needed to. a guy on craigslist has a chipped P06 ecu with 450 injectors.

 

No. YOu don't need a chipped ECU with 450cc injectors unless you're putting them on a turbcharged engine.

Get a stock OBDI P06 ECU for an automatic.

 

okay thanks. so should that solve the problem?

 

It definitely is a problem that needs to fixed.

 

but will it stop my car from bogging down and being so hard to start up in the morning?

 

I also told you to check timing. And do a tuneup.

 

alright thanks. im gonna put a ecu in it with the next day or so, and ill get it tuned up and stuff.

 

you need a p06 ecu. the ex comes with a p28. make sure its a manual ecu, if you have a 5 speed.

 

i have an auto p06 ill trade you for that p28 pm me if you're interested.