when i first got it the plug that hooks to back o2sensor had no actual plug and wasnt hooked up, it was bare wires on the harness side, but it didnt do it when i first got it thats why i dont knoe if thats the prob or not
ive had it scanned about 4 different times, the only other thing is, the tps was showing that it was reading 12 but should be reading around 5 to 6 not sure what that means, do you have to do something after you put the tps on?
Those Beldin cables are junk. Take them back and get a refund. I have a new set out in my garage that was used once. Junk. I had misfires. With certain models, there's a known cross-fire issue that is due to the ignition wiring design. To avoid this problem, one of the fixes was to completely do this whacky rewire at the cap and at the block. Another solution was to use heavier wire sets which is what I did.
Do yourself a huge favor and go out and purchase a new set of MSD - 8.5MM wires. Just be sure to get the ends that match your cap terminals. Get some nice wire looms to keep it all neat. That will solve the misfire issue and give you years of trouble free service on the ignition.
Now, that will not solve your white plug issue. All I need to know is what cyl/s are turning white like that. I have a growing suspicion that your going to tell me that it's the rear two cyls that are whiter than the rest and, if so, there's a good reason- CAT is shot. The heat is backing up into the rear end causing the plugs to overheat and misfire.
Now, if it was drilled out, (results of all those weld spots by the way) it should be free from blockage. But, the only way to verify that is to test it. Do what I recommended.
Step 1: Disconnect negative bat terminal.
Step 2: Disconnect the connector for the down tube O2 sensor.
Step 3: Using a 7/8 in box end wrench, loosen and remove it.
Step 4: Connect the O2 sensor to the connector and let it hang.
Step 5: Re-connect the negative battery terminal
Step 6: Start the truck and let idle.
Does the truck backfire when revving? If it does- simply rev it up and listen for sputtering and/or backfire. If it DOES NOT backfire, the CAT needs to go ASAP.
IF IT DOES backfire: shut it off and reconnect everything back the way it was. It may not be the CAT but, the only way to isolate the CAT would be to disconnect the inlet down tube from the header on that side. That's the only sure way to tell if it's your CAT or not. But, that's easier said than done. Some of those junctions are rusty as hell and getting them to separate is difficult.
Even if you were able to separate them after snapping the fasteners etc, good luck getting it to seal shut like it was before it was pulled apart. It's 50/50 there in my experience.
Post back some results so we know where to start troubleshooting.
PS: that bare wire deal at the O2 sensor.....fix that. Don't leave it like that. That's a hack job and was probably some kind of cover up / band-aid to fix some issue before you bought it. Make it right. Who wants wires exposed to water that will short out. That's 12 VDC going there to heat that thing up. The last thing you need is a semi -short at that part of the circuit. WHo knows what kind of damage that's going to do to the computer. That voltage goes to ground and, anything connected to the ground buss ends up seeing DC voltage spikes- not good for the computer. Fix that.
back o2sensor JB welded in cant remove thats handy!!! when i replaced the front sensor the sensor side didnt come with a plug so i had to cut the plug off the old sensor and use it why dont they put a plug on it just to make it a pain in the a#$. so i not positive if its hooked up correctly, the only ones that could be hooked up wrong would be the 2 white heater wires. and all the plugs are white, not really any gold or brown look to them.
JB WELD! LOL. Wtf is going on there? Sheeesh. Torch it. Once the rating temp is exceeded for that epoxy, it will start to soften. But, just don't let it cool or it will be even harder to soften the next time! Ten bucks that was done to hold it into the exhaust. Perhaps there was no port and they drilled a hole and used good 'ol JB to the rescue!
Those sensors are supposed to come with a plug for our trucks. Bosch has some good ones for about 42 to 60 bucks. Get a new one with a plug. Toss that one out.
that was a new one, and it was 60$ and it was a bosch, i asked then if they come with plug and they said not for the front sensor? Okay i got some good news!!! i just was reading a thread and i just happened to read the part where it said to put the TPS on then reset the COMP. by
taking negative off.
then turn key over for 20 seconds.
hook negative up.
start and drive go 60 mph.
and that resets it? but i did that and it ran like a CHAMP!!! never felt it run like this. drove it for 45 minutes, all different types of driving. but last night i unhooked both sensors to see if it would change anything, but still cut out, but i didnt reset it like this, so not sure, it that was it? runs GRRREAT!!!
Perhaps for yours there is no connector- wow. How do they expect people to install them- solder them up under the truck? To me, that doesn't make any sense at all. Both of mine have a wiring harness and, the old one you had included a harness yes? So, either I would look someplace else or, perhaps research will prove that's the way it's meant to be.
As for resetting- all you have to do is simply drain the caps in the computer. That can be done slowly by removing the negative battery cable and letting it sit for a while.
To do this immediately- you take the negative cable off, and short it to the red cable. There will be a slight spark if it is done right away. I don't advise doing it as soon as you take off the negative cable because that puts a strain on the caps. They don't like to just discharge like that and, it ruins them.
Wait for a minute BEFORE touching the two bat cables together. You will get the same results as what you did with the key ON and it's faster to do as well.
the old o2sensor had a harness, but new one was just bare wires, pretty stupid if you ask me. but its the upstream o2sensor that has caused this whole mess!! so im going to get a new cat and two new sensors and it should run like a raped ape hopefully. thanks to all you guys that have listen to me b!$&*# this whole time. thanks again for all the help, greatly appreciated!!!
