How the hell does a thick coil of copper encased in epoxy go bad? You put a mosquito in that shit for 65 million years and get a fuckin dinosaur and you're telling me these things can't last 5?
Finally becoming frustrated
- Thread starter Parke_A_Saurus
- Start date
How the hell does a thick coil of copper encased in epoxy go bad? You put a mosquito in that shit for 65 million years and get a fuckin dinosaur and you're telling me these things can't last 5?
Well damn. I read ".. on my 2000 4.0 Disco I upgraded to Magnacor..". Too used to skimming through Kenith's mile long monologues.
Last edited:
Ok, so I've been doing some research, and after speaking with someone that has way more experience than I at diagnosing problems, I think I'm going to try a knock sensor on bank 1. The P0327 code is pointing that way. What do you all think?
I had this exact problem once but not on a disco although it was on a rover V8. i chased all of the ignition problems etc just as you are. my symptoms were just as yours. the cure was in my case the stepper motor in your case it might not be called a stepper motor anymore but the function is the same. there is a device that allows air to bypass the throttle body during idle so the maf can detect airflow and regulate the mixture. what happens is this device will malfunction intermittently and allow an unmeasured amount of air through the maf witch causes the computer to adjust the mixture incorrectly. it works like a big intermittent vacuum leak of sorts. and will cause all kinds of codes to chase.
The bosch version of this can get kind of gummed up inside, but can be cleaned, at least I cleaned the one on my 1999 when I was trying to figure out the idle problem.
upper left of this image:
But he says he's already cleaned it.
Yes, as I mentioned in a previous post, I have and am using an ultragauge. I replaced the bank 1 knock sensor and got the codes down to 3.
P1300
P0304
P0306
When I did that my fuel trim evened out all the way around but my bank 1 O2 sensors lost voltage.
I tried swapping the wires and got the same codes. I replaced the coil pack with a used one I had and got codes
P1300
P0303
P0304
P0307
When I did that my fuel trim on bank 1 dropped to 0.0 and my upstream O2 sensor on bank 1 jumped to 1.1 volts with all the others being around .4 volts.
I think both my coil packs are bad and ordered a new one and think that should solve the issues.
P1300
P0304
P0306
When I did that my fuel trim evened out all the way around but my bank 1 O2 sensors lost voltage.
I tried swapping the wires and got the same codes. I replaced the coil pack with a used one I had and got codes
P1300
P0303
P0304
P0307
When I did that my fuel trim on bank 1 dropped to 0.0 and my upstream O2 sensor on bank 1 jumped to 1.1 volts with all the others being around .4 volts.
I think both my coil packs are bad and ordered a new one and think that should solve the issues.
Ok. So i replaced what I thought was a bad coil on my housing on the original set of coils. The truck started great ran fine, a little rough but good enough... then that blasted check engine light came on and started flashing again then the truck died. Looked at the scan tool and ot did not show any fuel trim to banks 1 or 2, although the O2 sensor voltage seemed to be perfect. At least one problem gone. Can't figure out why the no fuel issue appeared though. Anybody in Colorado Springs, CO and want to make some money working on this POS? I give up.
How much oil or coolant was on the O2 sensor plugs by the firewall? This is sounding like you have an ecu problem. I have seen contamination wick up the wire into the ecu and start funky stuff. Take the ECM out and inspect the plug, and take the cover off and look for green corrosion.
Also, have you stuck a boroscope into the 4 and 6 cylinders? Looking for steam cleaned Pistons.
Edit also make sure the injectors are plugged in or plugged into the correct plugs.
Also, have you stuck a boroscope into the 4 and 6 cylinders? Looking for steam cleaned Pistons.
Edit also make sure the injectors are plugged in or plugged into the correct plugs.
Last edited:
What RPM does the UG show? What road speed? How about TPS %?
If the computer thinks you've got your foot on the gas or you are rolling down the road, it won't try to control the idle very well.
If the computer thinks you've got your foot on the gas or you are rolling down the road, it won't try to control the idle very well.
Kyle:
I have no sort of fluids ever leaking anywhere near the o2 sensor plugs. I did have valve covers leaking, but fixed that before any issues. I do not have a boroscope nor am i going to purchase one. If you or anyone on here lives close by and would like to loan me one, that would be fantastic. I have checked the injectors and plugs and the only one loose was on injector 2, haven't had any problems with cylinder 2 so I'm leaving it alone.
Jafir:
Not sure what any of that is, but I know I've seen it on my ultragauge. Unfortunately I can not keep it running long enough to read anything.
Just to reiterate for every whom is helping on here I have replaced what was thought to be the bad coil only for it to throw these codes:
P1300
P0303
P0306
P0307
With a pending code of:
P1137 or P1127 it just slipped my mind.
It is running like it did when my original cats went bad. Im thinking that when I got them superheated and glowing red that I "burned them out", for lack of a better term, and need to remove them. I am going to do a test run with the front sensors removed and see if it idles. Wish me luck.
Those are all mis-fire codes except for P1137 (Fix your ABS and that will go away). I'll ask again, what plugs did you use? I'll give you a hint, the more you paid for them the more likely this is what is causing your problems.
Sorry I missed your question about the plugs. I installed Bosch platinums about 4 months ago. You are not the first person to tell me that those plugs are horrible. Do you recommend original plugs? I think they were champion coppers or were they autolites? The misfire codes I will deal with after I get it to stay running.
you can use autolites or champion just make sure you have them gapped properly. I tried those bosh plat. on my 03 and had lots of problems with misfires.
Any single electrode plug should be good but I think most of us prefer Champion. Jeff has the number for you. Gap them at .040 and this may take care of your problem.
