Rep Power: 0

Hi there fellow honda people I have a problem I hope u can help me solve. Ok here goes I have a 98 civic dx that had a factory motor in it well I just swapped it with a motor out of a 98 civic lx now that it's done I was not getting spark so I swapped distributer out from my old motor now that I have spark and the car starts it will not accelerate when in park or in gear when I give it gas the motor bogges down. so I called a honda dealership and talked to a tech there he told me to check the PCM and make sure the part # were the same so I called a parts store to check and see if they were and yes they are the same part # but then I was told I may have to reprogram the PCM since it is a different sub model dx to lx and I have no idea how to reprogram the PCM... Or is there something else I'm overlooking ? I'm a single father that needs this car to run so I can get to work and back and get my daughter to here doc appointments she has every week so please someone give me some advice on what to do thank you and God bless

 
Rep Power: 518

Swapped engines why? What happened to the original?

During the swap, were the original intake and exhaust manifolds reused? Original PCM?
What are the new engine number and old engine numbers?



How about some more info about the car you have and the car the engine came out of. (doors, trans, etc) There are like 7 or more different versions in the catalogs.


First thoughts:
Clogged exhaust (cat)

maybe...Swapped MAP and TPS connectors

 
Rep Power: 0

Swapped the motors because my d16y7 started knocking so I swapped it for another d16y7 both cars are 4 dr with auto trans I changed the tps sensor out already I did not change nothing on the motor I put n my car such as the intake except for the distributer because I was not getting spark at first I also put my header back on the motor because the exhaust manifold had a crack in it did not change out the PCM using mine that was in my car which is the dx the motor I put in it came out of a lx if I'm still leaving anything out that anyone may need to know please tell me... right now the car will start up and idle but no throttle response just bogs down when accelerator is pushed thank y'all for all the help

 
Rep Power: 518

So a straight swap same engine replaced same engine.
PCM is not programmable.
PCM appears to be the same between LX and DX with auto trans


Is the exhaust clogged?

Did you get the TPS and MAP connectors swapped? (I know it can be done on some engines)

Is the MAP sensor good? Vacuum passage isn't clogged in the throttle body?

Did you swap the fuel injectors and fuel rail from the original engine? I used to see a lot of stuck injectors come on used engines.


Got codes?
Got a scanner? Live engine data might be real handy right now.



Check ground wires on thermostat housing?

 
Rep Power: 0

Yes same motor swap replaced the map sensor not clogged pretty sure my exhaust is not clogged did not change out injectors or fuel rail cause the motor was running great when I pulled it to put it in mine grounds are good just started giving me a miss fire code found to bad plug wires on the way to get new ones now was thinking I was 180 out on time and not on compression side but on exhaust side but ran compression text and it's n time as well any other suggestions

 
Rep Power: 518

If it was missing bad enough long enough it can trash the cat.


Plug wires out of firing order around the cap?

Timing belt not jumped a tooth?

 
Rep Power: 0

Plugs wires n right firing order triple checked lol rotary button in right position on tdc going to pull the valve cover off tomorrow and check the timing belt just to make sure it didn't jump a tooth cause right now that's all I know left to check not missing long enough to miss up the cat I don't think but that is the next thing I'm going to do after checking the sprocket position on timing belt been looking at a whole new exhaust system anyways do u have any good recommendations on which one to buy...and once again thank you for all the help

 
Rep Power: 518

No comments on exhaust from me. Get it to run first before worrying about exhaust.

 
Rep Power: 0

Well back at it again bout to check timeing belt pulley just to make sure it hasn't jumped time for some odd reason I will post later what I find out

 
Rep Power: 0

Ok well I just put my motor on tdc on the #1 cylinder pulled my valve cover off and the timeing belt cover and the gear that holds the timing belt is facing down and not up like it should b how that happened idk when the motor was running when pulled out of other car but I need to know how to put it back in time to where my distributer is not 180 degrees out when I'm done

 
Rep Power: 0

Ok well I did a motor swap on a 98 dx civic 4 dr with a d16y7 motor I dropped in another d16y7 motor out of a 98 lx civic 4dr been having trouble ever since then the new motor was running fine when pulled out and put in but now that I can get it to idle but no throttle response motor bogges down when gas pedal is pushed. I put it in tdc on the #1 clynder distributer is in right position pointing at #1 but when I pulled the valve cover and timing belt cover off the timing is 180 degrees out on the timing belt idk how this happened but how is the best way to fix it and keep the distributer from becoming out of time in the process don't know a lot about timing

 
Rep Power: 518

It's not 180 out, that's impossible.
It's a 2:1 drive ratio between crank and cam.
The word UP must be near the top, not on the bottom of the cam pulley.
Just spin the crank one more turn to TDC again and see if the cam marks line up to the head.



If the word UP is at the bottom, your #1 is on overlap TDC, not compression TDC.
Your #4 would be on compression TDC though.

 
Rep Power: 518

Spin the crank one more turn until the word UP is near the top of the cam gear.
Set crank pulley to the timing mark, inspect the cam timing marks.


NOW it seems you would have the plug wires in the wrong order around the cap.


EDIT: Moved posts into your other thread. Sorry about the order, it's due to timestamps.