Ok just got my GSR swap running in in my 1993 hatch. I have a chipped p28 with a stock GSR tune. any clue what this could be?

 

Its in "limp mode" what CEL are you registering?

 

i would guess you have a bad ground. check all grounds - trans, engine, grounds in the connectors (are they all pushed in the connector).

had the same issue last week, and one of the ground wires was pushed out of the driver side engine harness connector... got pushed out when the engine got plugged into the car...

 

i will check the cel tomorrow and the grounds thanks alot. And could you explain limp mod more?

 

to sum up'limp mode" as easy as i can... ur car is pretty much goin to let u do the bare min. with ur car, its pretty much their to either help u get the car off the road and not do any extreme damge to ur vehicle... my opinion would be, depending where u live and what state ur on try to get to ur local smog shop n they will be able to help u further but if u wanna take up the challenge get urself a scanner that read dtc's, CAN DATA BUS, n MODE 6... and lemme what codes u get and i could bhelp u out some more

 

Limp mode aka safe aka get to work mode. Runs you ecu at the richest possible setting. Bad for the rings because extreme rich micture means washing the oil from the cylinder walls

search google yo:

http://www.superhonda.com/forum/f146...de-etc-236192/

 

u didnt read the part where i said its the "mode" which allows u to do the bare min. to get the car off the road to help prevent extreme damage... and thanks for the link but iive fixed limp home faults bout 4 times now, two cases from bad swaps, and the other to poor poor maintnence... but i doappreciate u lookin it up for me they was good info in that column that will be useful to help diagnose it alot faster.. thanks

 

and just to point ur boy on that column was wrong where he said that u will lose ur ckp or otherwise known as the crank sensor... if u lose that sensor ur car wnt start no matter what u do hot wire or even ur good ol push start thats the main sensor to get vehicle runnin witout it no spark... n no spark means no power no power car dont move

 

^ dont see what that contributed but okay.

That link was to show the casues of limp mode so the OP could better fix his problem...was not directed towards you....

OP doesnt have CKP problem. Stay on topic until resolved.


This is for OBDII cars. OP's car is 1993 hatch; thus, the check connector is at the passenger side by the ecu. Two pin blue connector switch. Not sure what good an OBDII scanner will do in place of a paper clip...

OP should check codes like someone said. Limp mode caused from CEL's, Bad ECU, or things mentioned in the article.

 

honest mistake my dude... and like u said we shall stay on topic, this isnt myspace for bby bullshit lol... like i said honest mistake, and even then wit a good scanner u can still pull live data stream if u have proper connector... live data always helps even if its a 93 obd1 or zero there is always a way to pull data

 

No, you cannot view Data Stream on a scan tool with OBD1 or OBD0, because they don't have a Data Link Connector(DLC); otherwise, I would've in my Engine Computerized Control class with my OBD1 Honda. OBD1 has a two pin connector under the passenger side dash for you to jump and flashes the code at you which is why OBD1 are known as code flasher thats about it.

 

x2
http://www.hondata.com/techecucodes.html

To the other guy: research before you post and if you want to make valid points back it up with a little research. I understand you are learning. Just like everyone said you can have a live feed for stock ecu....now Hondata S300 on the other hand gives a live display which I love

I personally like the OBD0 way to check codes because it is much funner, much like a light show if you have enough codes

 

Probably a sensor problem like cam and crank sensors most of the time car wont let you do anything when it doesn't know when yo fire.

 

ok the motor is fully built gsr. I work at a shop. im not running an o2 sensor will this do it? and i didnt have the adapter for my scanner for OBD1 so i couldnt scan the car. I didnt build the motor i traded my del sol for it. The guy said it ran fine for like 800 miles then one day went into limp mode i guess. I checked the grounds they all look good.

 

thanks for the help guys

 

i knw the car is a 93 hatch but wht i wanna make clear is tht he didnt specify a year so i took it for granted and made an assumption tht it was an ob2 swap... so since i still havent seen any years specified on the swap i still stick wht my lsats posts...


and this is to the OP, please specify the year of the motor! if you do not knw it pull the last 8 numbers of the vin and ill look it up just to double check it... and to answer ur question bout the 02 sensor... it may but its hard to tell u the answer, need a lil more info it could be that the wrong ecu is being used or tht since it is a fully built gsr... the stock tune isnt doin u any justice and therefore ur arent to put dwn ur power at all... so hit me wit some feed back and we will cont to go from there

 

Check you timing yo!

 

check your SPEED SENSOR!!!! PLUG IT IN make sure it works

 

I actually have the same problem going on. AND I also dont ave my O2 sensor plugged in. I got the swap finished yesterday and it idles perfectly just doesnt rev passed 3500. My only issue with mines is that it isn't giving me a CEL. Which even doesnt make sense to me since I dont have a O2 plugged in. Im gonna look around for a ecu to try out today.


If you have a CEL on then you should definately read that before you start going to deep into it. I imagine you'll have one for your O2 but maybe you have some other main sensor missing too thats throwing you in limp mode. If you dont know how to check the CEL then just check at the top of this forum in the FAQs theres a great write up.

 

Btw the year of your swap isnt really going to matter. the motor is in an OBD1 car now and thats what ecu its going to run now.

 

I posted the link to how to check codes a while ago...look up. This guy obviously doesnt want to check codes the easy way or really take advice....so I am done with this thread.