tune up/ mass air flow question

[stepside83]

well i finally had time to mess with my truck, i took the o2 sensors out on left side and it idled alot better, but when i took it for a ride it still ran the same, like it wanted to go as fast as my foot was trying to make it, but there was something holding it back, the check engine light comes on still and flashes and then goes out, but it only did it after the o2 sensore were in again while they were out it didn tflash at all, so back to the drawing board i guess, i read my owners manula and it said when light flashes it useally something to do with emissions, any truth to that? and any ideas on what it could be now? has new oem plugs, new wires, just changed oil tonight, the onl thing can think of is the coil packs are causeing the problem, thanks gus any info once again will be apprecated

[Rudy67chevy]

Originally Posted by clinebarger

Running a K&N filter is not a problem, Over oiling them is.

I have never oil my filter, just rinse it of with the water hose.

[clinebarger]

Originally Posted by Rudy67chevy

I have never oil my filter, just rinse it of with the water hose.

OK....You have to oil your K&N filter. On 99-06 trucks with a stock replacment filter it takes a little under 2 ounces of oil after cleaning it with the K&N filter cleaner/water/drying.

The K&N filter is very thin & porous, It relies on the oil to trap the dirt that whould otherwise end up in your engine.

[stepside83]

ya i deff oil my filter, prety sure you have to or it wont work the way the manufactures say it will, i still have had no luck figureing out whats wrong with my truck, open to any ideas i know its hard to figure something like this out online but im willing to try pretty much anything, since i dont make millions of dollars to just let the dealer figure it out and fix it lol thanks again

[67chevy2wd]

I just had a plugged cat on a 02 malibu with the 3100. I drilled a 7/16" hole before the cat and the car ran like crap still. I then cut the cat out and the car ran like it was supposed to. Maybe the O2 sensor hole isn't big enough on you truck? Just a thought.

[stepside83]

well my truck got a little better running wise for a week or so, now i noticed last night that about 95% of the noise from my daul exhaust and the fumes from the exhaust is coming out the left tail pipe, and about 5% is coming out the right tail pipe so that leads me to believe that the cat is clogged, it stalls a lot now barely idels when it is running, what you guys think, is thae cat causeing all this or could it be something else

[truckdude239]

bad cat

[stepside83]

well just got off the phone with local parts store/ service center and they said the coil packs is whats causing my problems any one agree with that, he said i could take it down and he could tel me which one or ones are bad, i think im just gonna get all 8 so i dont have to deal with this again in a month

[clinebarger]

Originally Posted by stepside83

well just got off the phone with local parts store/ service center and they said the coil packs is whats causing my problems any one agree with that, he said i could take it down and he could tel me which one or ones are bad, i think im just gonna get all 8 so i dont have to deal with this again in a month

I bet hes thinking Ford they do have a bad problem with coils. Have you checked the catalytic converters yet?

[bighaas79]

Originally Posted by stepside83

well just got off the phone with local parts store/ service center and they said the coil packs is whats causing my problems any one agree with that, he said i could take it down and he could tel me which one or ones are bad, i think im just gonna get all 8 so i dont have to deal with this again in a month

did they look at it or are they telling u this over the phone? If you would take your truck to a competent repair shop that actually knows what they are looking at when looking at data streams this would have been fixed by now. The parts stores most of the time don't know jack about whats wrong with your vehicle, they just want to sell you parts. It is possible that you have a bad coil but highly unlikely. Plain and simple it comes down to this, quit throwing parts at it and have someone who knows what to look for look at it so you know exactly what to get. It has been suggested multiple times that it is very possible your cats are clogged... have you even had someone check to see if thats your problem? You can ask for all the help you want but if you don't follow thru with the diagnosis process you get to the point we are at now, 2 months of asking the same question. Whats wrong with my truck. Everyone wants to save money and do things their self, which is great, but there comes a point when you have to realize your in over your head and need to take it somewhere. There is only so much help that can be given over the internet before it just comes down to the fact that you need to look at data streams to start to get to the root of your problem.

[spudz]

you need cats... and if you dont fix it soon, your going to burn the rings out of your motor...

[bwood]

Originally Posted by stepside83

i think im just gonna get all 8 so i dont have to deal with this again in a month

Coils run from $35 for cheapies to $100 each for the Delco (depending on which coil you have). So you would rather drop $300-$800 on parts that aren't bad/you haven't checked out? The dealers get around $85 per hour here and good, compentent shops will get about 2/3's of the dealer cost per hour, still cheaper than 8 crappy coils for an hour or 2 of diagnosis. Take it to a shop, have them hook it up and analyize the data. Don't throw parts at the problem, you'll end up at the end at all the money you spent that didn't fix it.

[truckdude239]

i have never seen coil go out on these trucks i had one in my shop the other day with300k and never had anything done beside normal maintance and plugs and wires