P1399 P0420 and P0300...if anyone with the helms can help me diagnose and trouble shoot this it would be much appreciated

 

Don't have the Helms with me but I had P1399 and it turned out to be 1 bad coil pack.

 

thanks for the help ....have a friend near by that has a types ill see if he'll let me swap his coil packs

 

420= Catalytic (cat) ineffieciency (replace or inspect)
300= Random misfire probably assocaited with your bad coil pack.

 

all 6 show mis fire...also how would one inspect the cat

 

I threw a P1399 last week...
I unplugged the e-manange, plugged back in the factory ECU, reloaded the e-manage map onto the unit and all is well.... but I am pretty sure you are not running e-manage..

check all your connection on the Unichip.

 

just called acura ...on the 1399 it says upside down intake gasket or clogged ERG...

 

for your sake I hope it's the EGR . . . I can't imagine you installing the intake gasket upside down . . . unless you are old like me . . .

Ruf

 

^

 

you recently put those thermo block spacers on.. didn't you?



there is only one way to put that gasket on. .. I just changed it when I installed the I/C

acura tech told you that?.... the Helms says DTC: Random Misfire for 1399

 

i dont have the thermoblock...i know 1399 says random misfire ...i need to know how to fix it....the gasket is not it...

 

^

 

P1399 is a temporary code that just means you had a misfire. Does not mean all cyls are misfiring. PO300 is a code that means random misfire. That just means that the misfire has not been pinpointed by the ecu. Might not be an individual coil if it's not isolated to one cylinder. Would be odd for more than one to fail at exactly the same time. The po420 code is for the catalytic converter efficiency as someone said. This could be a side effect of the mis or the rear oxygen sensor could be bad. Have you tried just pulling the #13 clock radio fuse and re-setting? Make sure to let the car set and idle afterwards until the fan comes on a couple times if you do. Does the car run bad like it's still missing? Could just be a fluke. Try the reset and see if the light comes back on.

 

hey i appreciate the help...but ...i know what the codes mean...its says what they are when it throws them...as mentioned in my previous thread...my car runs fine upto 4K after which time it falls on its face...it thows 9 codes...random multiple all 6 P0300 and P1399 and P0420 420 says to look for the other things first before assuming its the cat...1399 says egr cloged ports or gasket on upside down...300 say ignition system...



im looking for someone to tell me trouble shoot procedures

 

I'll unpack the Helms today... its in the back of storage with all my moving boxes!

 

i'll go dig it out and pm you.

 

for future reference

http://www.troublecodes.net/acura/32cl.shtml

 

no linky in your PM mikey

 

check your aim or pm

 

bump for scalbert

 

did you UNPLUG the Unichip? and plug the factory ECU back in?

 

yes

 

look for melting of the screen. severe deformation or it sounds like a big chunk of metal is rattling around in it.

 

and could this cause the ranndom misfire codes and not one for the 02 sensor?

 

I will check my egr tonite and call ya.

 

helms says check fuel pressure, still looking for symptoms and procedures for the other codes. prolly due to misfire, that could hurt the cat and poison it, but not sure. Check fuel pressure, compression, bad gas, possible malfunction in the vtec, check valve clearance. all this according to helms.

did you recently change plugs or do any mods?

 

You have a PM I dont think it is the egr valve...

 

were gonna check fuel presure today...no new mods...i have changed the plugs ...but i did this after it happened...thinking maybe it was plugs which it is not

 

your car is running lean, could be a couple of things, hopefully its not your fuel pump, they are like 700 bucks

 

you wish 700.00.... try alot less.

I wonder what Acura dealer you work for?

 

i hope it is the fuel pump...thats the cheap scenerio

 

E-mail sent, but forgot to stress removing the Unichip first.

Did you remove the Unichip?

If not, think about doing this first.

More info in e-mail...

-Regards.

 

I want to know what happened with teh tech dude.

 

6:15 will update tonight...there is a rattling sound coming from what seems like to me in the CAT but i think this may very well be damage to the cat after the fact...had been thinking of a hi flow anyway...

 

tried unplugging the uni chip with no change

 

How long was it unplugged? Was it unplugged and the ECU reset?

That would be an area of concern as erratic MAP readings can certainly cause this. I would also be curious what the fuel trim values are as that is easier to check than fuel pressure. But next would definitely be fuel pressure.

I suspect it is fuel related but could be indirect by way of sensor misreadings.

Just FYI, I am at a customer facility with no phone access.

 

not very long...but i had the batter negative disconnected whil un plugging it so...yes the ecu would have been reset but did it need to stay out longer than just the immediate test drive?...also he said the fuel trims looked good

 

45 psi at idle with vacuum pinched...and 40 while driving normal 50 at WOT is this normal tech thaught it was too high i thought too low

 

That is normal with the stock FPR.

 

Results???