Ok,

I've gotten a code for the second time.

The OTC Monitor 4000 Ehanced I have pulls the code as P0301 B - Misfire Cylinder #1.

I've re-adjusted the valved so I'm possitive that that is not the problem.

It does not happen all the time.

I replaced the ICM (ignitor) to fix a previous distributor problem, and the symptoms of that have not returned.

The cap / rotor / plugs and wires are all new. (NGK plugs and wires, OEM rest...)

I'm using the OBD-II configuration, and I've moved everthing over from the H22A4.

It only seems to do it while the engine is not idling... several thousand RPMS.

Also, it not do seem to be happing continuously. That is to say that if I reset the MIL/DTC, it will not happen again for a few hundred miles.

Any thoughs, oh wise ones??

 

normally if you change the ignitor you are supposed to change the coil too

 

Even if the coil checks out fine?

 

I would suspect the ECU itself. If you have any special cables they need to be checked carefully with an Ohmmeter. It is cylinder specific so you tell us, which makes it even more unusual. Are you absolutely sure that the injector is OK?

 

on the cylinder that is missfiring move the injector to a diff cylinder. if it follows the injector theres the prob

 

I've got no idea if it's the injector... but I'll move it this weekend and see what happens.

The ECU should be ok. I do have another one... and they are both P5M OBD-II. (I did not got with the P13 and OBD-I due to the inspection related headaches in NJ.)

I'll try that and get back to you...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by gerhard &raquo;</TD></TR><TR><TD CLASS="quote">Ok,

I've gotten a code for the second time.

The OTC Monitor 4000 Ehanced I have pulls the code as P0301 B - Misfire Cylinder #1.

I've re-adjusted the valved so I'm possitive that that is not the problem.

It does not happen all the time.

I replaced the ICM (ignitor) to fix a previous distributor problem, and the symptoms of that have not returned.

The cap / rotor / plugs and wires are all new. (NGK plugs and wires, OEM rest...)

I'm using the OBD-II configuration, and I've moved everthing over from the H22A4.

It only seems to do it while the engine is not idling... several thousand RPMS.

Also, it not do seem to be happing continuously. That is to say that if I reset the MIL/DTC, it will not happen again for a few hundred miles.

Any thoughs, oh wise ones??</TD></TR></TABLE>

i may just be pulloing this out of my *** but when you did the obd1 to obd2 swap on your jdm motor did you bring everything over , ie the whole distributor injectors wiring harness oil pump with crank fluctiation sensor?

tell me what you swapped over, i think i might know the problem.

 

Well,

Basically EVERYTHING..

- Distributor
- Wiring harness
- new plugs / wires / cap / rotor
- CKP Sensor
- TDC Sensor
- H22A4 Intake Manifold
- Oil Pan and Stiffener
- Coolant sensor
- Knock Sensor
- Oil Temp Sensor
- H22A4 Fuel Rail... and injectors...

Basically... everything...

Gerhard

 

Guys,

I have a bizzare update...

The temps in NJ have been mostly mild, especially since I performed the swap.

This morning I drove the lude over to the store, and it was about 20 degress out.

Car started just fine, and I drove it nice and easy since it was't warmed up.

I hooked the monitor up to the OBD-II port, and noted the Intake Temp at 40 degrees and the coolant temp at 110 degrees.

When I started the car up, the idle fluxuated between 1500 and 2000RPMs (oscillated between the two).

1) What would cause this?

2) Would it is some way be realted to the misfire, or would is be a completely different issue?

Gerhard

 

d you check ALL of the vacuum lines and make sure they are OK physically? Something is not signalling correctly. Could still be the TPS or an injector.

 

Looks like I'll be checking all of the vacuum lines...

 

I would double check over the vacuum lines as well. Sounds like one of the intake manifold hoses or possibly the MAP sensor hose may be loose/bad/fubar'd.

 

I should state that the RPM fluxuation stopped when I stepping on the gas after about 10secs.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by gerhard &raquo;</TD></TR><TR><TD CLASS="quote">Well,

Basically EVERYTHING..

- Distributor
- Wiring harness
- new plugs / wires / cap / rotor
- CKP Sensor
- TDC Sensor
- H22A4 Intake Manifold
- Oil Pan and Stiffener
- Coolant sensor
- Knock Sensor
- Oil Temp Sensor
- H22A4 Fuel Rail... and injectors...

Basically... everything...

Gerhard</TD></TR></TABLE>

did you swap over the h22a4 oil pump housing so that you could bolt up the crank fluctiation sensor?

 

Of course...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PrettyLude &raquo;</TD></TR><TR><TD CLASS="quote">normally if you change the ignitor you are supposed to change the coil too</TD></TR></TABLE>

Where did you hear that?

 

sounds likea bad injector or bad gas, this was happening in my lude also a few weeks ago when i had some bad gas.

are you still running on the same tank of gas as when this first started?