Im runnig a PM6 ECU with a JDM SOHC ZC in my 90 CRX HF, im getting code 5 and I have no Idea why. The car turns over and runs for a minute at a crazy low idle and then slowly dies. All the Vacume lines to the map sensor are fine and the pulg is fine. Dont know what else to do, need help guys, im getting booted out of my house and need to get this thing running or im fucked . Thanks in advance.

 

what is Code 5 for?

Im to lazy to look at the ECU codes.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Idiotboy &raquo;</TD></TR><TR><TD CLASS="quote">Im runnig a PM6 ECU with a JDM SOHC ZC in my 90 CRX HF, im getting code 5 and I have no Idea why. The car turns over and runs for a minute at a crazy low idle and then slowly dies. All the Vacume lines to the map sensor are fine and the pulg is fine. Dont know what else to do, need help guys, im getting booted out of my house and need to get this thing running or im fucked . Thanks in advance.</TD></TR></TABLE>

Your MAP sensor is gone. I just read another thread on a diferent forum, and it said that honda's have no back up sensor to keep the car running, so therefore the motor dies. MAP sensor is an important sensor, and needs to work to run the car

 

yep thats no good

 

So get a new map sensor? Works for me aslong as it fixes the problem.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by redryder &raquo;</TD></TR><TR><TD CLASS="quote">MAP sensor is an important sensor, and needs to work to run the car</TD></TR></TABLE>

the motor will run if it's unpluged but will run like total ****.

 

Code 3 - MAP Sensor
Usually means there is something wrong with the sensor itself.
Has the the most control over the fuel injector pulse width.
When the MAP voltage is too high check code 5.


incorrect cam timming
incorrect iginition timming
restricted exhaust
excessively worn engine or leacking valves
Testing - Voltage varies from about .6v to 2.7v. Running no load will usually be less then 1v or slightly lower, when warm and idling. Under heavy load 2.5 to 2.75 volts. PA sensor should also read close to the same with Engine Off and Key On (EOKO).


Condidtion MAP Volts Inj PW Exhaust CO
Normal .94 2.0 ms .3%
Vacuum Leak Created on MAP Hose 1.13 2.3 ms 6.5%
Bigger Vacuum Leak Created on MAP Hose 1.25 2.7 ms 9.9%

MAP Sensor Wires:


1 White/Red
1 Green/White
1 White

 

I am having a similar problem with code 5 but around 3k it bogs and sounds like 2 step. and then a second or two later it kicks in and drives.

 

I replaced the map sensor, but im still getting code 5. WTF this is pissing me off. what else would make the car throw code 5?

 

i had the same problem after my swap, turns out my brother plugged the #21 vac line and ran #16 to the intake on accident. very easy mistake, might as well check and see. hey, could you post a pic of your engine bay with the vac lines?? i just swapped in the zc into my hf, and it doesn't want to run right. if i run it with the map sensor plugged and the egr valve going where the map should be on the intake, it screams, but it throws code three and five, and if its ran the right way, the car bogs, overheats, and has no power. i need to know what im doing wrong here.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Idiotboy &raquo;</TD></TR><TR><TD CLASS="quote">I replaced the map sensor, but im still getting code 5. WTF this is pissing me off. what else would make the car throw code 5? </TD></TR></TABLE>

*sigh* code 3 is electrical map problem. code 5 is a mecanical or vacume problem. replace the vacume hoses to from the map and intake and that will go away. or just run a hose from the map direct to the IM.

 

Here is a link to some pics of the map vacume set up.

http://community.webshots.com/...luRIi

 

bump, still dont work

 

Some of those t fittings look pretty small, try to cut those out and see if that fixes the problem.

 

replaced the fittings and vac lines still no change, Im wondering if it could be an intake manifold gasket leak?

 

Do you have a surging idle ?

 

No surgin idle, it just idles at 300 rpm and runs very rough, like there is a vacume leak.

 

I gave up and took it to the shop. I'll let them figure it out.

 

my friend is havin the same thing in his 91 16a integra. throws out code 5 and code 2. runs ok. idles at 900rpms but seems to kinda bog a little when you first apply the gas. any suggestions? im tellin him to go with a b18b throttle body so he can run an obd1 map and get rid of the obd0 map bullcrap. lmk peeps