s300 problems

turboh22a · Post by **turboh22a** » Fri Jan 02, 2009 9:22 pm

Alright so i have a miss on cylinder 4. tryed cap rotor plugs new wires. Thinking i might have a bad ecu. I tryed my old ecu from a single over head cam f22 and the h22a ran 3 times as smooth. Does anyone know of where i can have my ecu tested, there isnt anyone around here running a h22a so i dont have a car to try it on? anyone. Or is it possible to put the ecu in my 92 accord thats stock? please help

Martian · Post by **Martian** » Sat Jan 03, 2009 2:34 am

Put your ecu in another car and load a stock map for that car.

turboh22a · Post by **turboh22a** » Sun Jan 04, 2009 4:39 pm

when the computer is turned on...the light should be green where the data cable connects to the ecu correct? because there is a red light and a green light..i only remember seeing green before not the red? am i correct or incorrect on this?

Post by **Spunkster** » Mon Jan 05, 2009 11:06 am

Does it upload and datalog?

turboh22a · Post by **turboh22a** » Mon Jan 05, 2009 1:00 pm

The computer does upload and datalog. I had never noticed the red light before. so i figured id see what ya had to say. Im stuck on the cylinder 4 misfirewith a code 16.new cap rotor plugs wires compression and leakdown pass with flying colors..distributer??

inteGReddy · Post by **inteGReddy** » Thu Jan 08, 2009 9:53 am

turboh22a wrote:when the computer is turned on...the light should be green where the data cable connects to the ecu correct? because there is a red light and a green light..i only remember seeing green before not the red? am i correct or incorrect on this?

I believe the red blinking light is normal function when you are datalogging or connecting real time with a laptop.

Post by **Spunkster** » Thu Jan 08, 2009 10:28 am

What is the code on the side of the ecu you are using?

turboh22a · Post by **turboh22a** » Tue Jan 13, 2009 9:19 am

the ecu is a p72 gsr computer

Post by **Spunkster** » Tue Jan 13, 2009 10:36 am

Is the ecu square or rectangular?

turboh22a · Post by **turboh22a** » Tue Jan 13, 2009 7:02 pm

its a usdm ecu rectangle, i installed my new distributer today and still has a misfire on cylinder 4. took out the plug the piston was damp with fuel installed new plug and still the same..im lost completely now. Anyone please help..thank you

OTT · Post by **OTT** » Wed Jan 14, 2009 2:17 am

I would consider having all 4x injectors tested, cleaned the tested since.

turboh22a · Post by **turboh22a** » Wed Jan 14, 2009 8:35 am

i have installed 2 sets of injectors my 440's and the 780's and i get the same result on both sets of injectors...i though injectors also till i tryed another set

OTT · Post by **OTT** » Wed Jan 14, 2009 10:30 am

then get hold of a set of injector nodes and check functionality.

Then after that check all positive feeds for injectors and continuity between the injector connectors and the relevant Pins on the ecu.

Then go on to check continuity between earth and the earth on each inj. clip.

also inspec the single spark plug lead and consider swapping it out with another one to see it this 'moves' the problem.

keep working systematically around the systems related to the problem.

turboh22a · Post by **turboh22a** » Wed Jan 14, 2009 6:15 pm

thanks for the help..once its not -30 below zero ill see what i got and get back to ya thanks again

planetspeed · Post by **planetspeed** » Thu Jan 15, 2009 6:52 am

If you can't get hold of another H22a distributor, try to check for the tooth/pickup inside your distributor for chipped teeth that could throw a wrong or no spark to cyl4..also, try to check inj4 socket for shortage.this will open inj4 fully without closing thus flooding that cylinder with fuel.Hope this helps.