Chugging when driving

[Cable810]

I have to sum this up quick as I'm bout ready to leave for work. I've noticed a Chugging when going up hill. It was doing this when stock, but It seems to have gotten a little bit worse after lift etc...

I'm thinking its the Tranny cause it allways seems to be "chugging" around 2500 rpms and the tranny is trying to shift and after it shifts it stops(sometimes). When traveling up a hill and if its big enough that I have to step on the gas it goes away. There is no general seed this happens around. I travel at about 50-55mph.

Here is another issue. Sunday my dad and I went for a Drive and when we were heading back I steped on the gas and the Engine boged down for 4 seconds then acted fine..... I notied it seem to have been backfiring a bit when I was stoped at a red light and got going when it changed. I noticed when Idling it goes quit and I think it falls below 1000 rpms. I'm thinking it might be the camshaft.

This is all hard to explaing so please bear with me. It would be eayser if someone drove it to hear and feel what its doing.

[navigator]

any of your sensors should throw a code for the most part.
Have you cleaned your throttle body lately and did you disconnect the battery cable so the PCM could relearn the new mixture more quickly?

[Trail X]

I'm guessing your CEL is not on?

If you really think it's the trans, you may require a scan tool to actively view the inputs and outputs of the trans. However transmission slip is monitored by the PCM. I'd bet it would pop a code if it was significant.

You've done a video for past problems, do you think that would help in our diagnosis here?

[Cable810]

I cleaned my TB Almost a month ago and disconnect the negative terminal. My CEL has been on and off. We had taken it to the stealership(Had them check the code cause they were suppose to fix the Fuel Sending unit) and they said it was throwin a code for the Camshaft(Either the Selunoid or the CamShaft its self) They didn't say which one, just either or. While on our trip the CEL pop one and then off for about a second. If my camera is working I'll try and get a video.

Would the Boging down ahve something to do with a Fuel Filter?

[navigator]

unsure about the 2002 but the newer TBs have an in tank fuel filter that is usually trouble free.
Take it to an autoparts store an get the code read again and give us the codes. There are several sensors that could give you a bad fuel mix that would cause sluggishness. They should give you a code though to tell you what the problem is.

[Cable810]

Ok. I had a friend say it might be the Fluid Levels in the Tranny.... I'll try and get the codes by Friday

[Trail X]

I cleaned my TB Almost a month ago and disconnect the negative terminal. My CEL has been on and off. We had taken it to the stealership(Had them check the code cause they were suppose to fix the Fuel Sending unit) and they said it was throwin a code for the Camshaft(Either the Selunoid or the CamShaft its self) They didn't say which one, just either or. While on our trip the CEL pop one and then off for about a second. If my camera is working I'll try and get a video.

Don't you think a CEL would be appropriate to mention in the original post?

Get it read before any more "my friend say it might be this". It MIGHT be anything! Get the codes read before any more speculation.

Would the Boging down ahve something to do with a Fuel Filter?

You do have an external fuel filter on an 02. If you haven't ever changed it, you probably should, as it's part of standard maintenance.

[fishsticks]

You do have an external fuel filter on an 02. If you haven't ever changed it, you probably should, as it's part of standard maintenance.

Not to mention being ridiculously easy to get to.

[navigator]

in my experience if your tranny fluid is low you have issues shifting/slipping which usually has an increase in engine rpms.
What I picture in your scenario is the engine bogging down which leads me to believe something in your fuel/mix.
Get the codes read.
That is always step one.

[Cable810]

Got it scanned today, p0300 and p0014. We took it for a ride and cylinder #3 is backfiring bad. He suggested that it is the Ignition Coil on Cylinder #3. Another thing I noticed is the IAT sensor wasn't connected and was lying on the exhaust maifold..... Stupid me I forgot to put the IAT sensor back.......

[navigator]

has anything changed since you plugged the sensor back in?

[dvanbramer88]

Is the check engine light flashing or does it stay solid? Flashing indicates a mis-fire condition.

If nothing has changed since you plugged in that sensor, I would suggest a tune-up, (Plugs, and I'm assuming wires or boots to some extent)

Again, fuel filter is 10 bucks and takes <20 minutes to change.

Air filter clean?

Is this all during the same tank of gas? Or has the problems been persistent for some time over multiple tanks of gas?

[HARDTRAILZ]

Dealership can fix it is what i heard through a friend

[Cable810]

Still missing even with it back in. Thats driving over 50 miles with it back in. Light is not on when its runnimg. It's solid when I turn the key half way to roll up the windows. Its hard to say with the gas I filled it up after my trip sunday. I'm usually putting in about 9-13 gallons. Usually I go the same station but the last 2 time they were both different stations.

There is an Advance auto where I'm currently at. Suggested ignition coil brand and plugs?

[navigator]

I think on our platform that anything other than the Delco Iridiums are inviting trouble.

[Cable810]

Allrighty then. Should I replace all 6 even though 1 is causing a problem? I say yes.

Here is what the Advance Auto has http://shop.advanceautoparts.com/webapp ... ition+coil

[Trail X]

Whoah whoah, slow it down!

P0300 is a RANDOM misfire, not a #3 cyl miss. #3 is P0303. So that implies that you are experiencing a sporadic misfire on multiple cylinders.

P0014 is an error thrown by improper cam angle. The camshaft actuator is potentially fouled. That could in turn cause a P0300.

Full documentation for P0014 is found here: viewtopic.php?p=60576#p60576

[dvanbramer88]

Light is not on when its runnimg. It's solid when I turn the key half way to roll up the windows.

Yea. When you turn the key half way to roll up the windows, EVERY light on the cluster should come on. If its not on when you're driving, engine running, my guess is the guy at the parts store cleared the codes.


(Also, when you go to buy a used car, turn the key to on and make sure EVERY light comes on. You do this to make sure they didn't unplug a light bulb to hide a warning light and a problem with the car. FWIW)

[Cable810]

The dealership(when they scaned it for the Fuel Sending unit they cleared it. I never knew what codes) The guy that scaned it cleared them.

When he drove it on the cylinder graph #3 Cylinder was the only one that back fired alot.

[Trail X]

When in conjunction with a P0014, I wouldn't put much emphasis on the P0300 until you fix the P0014. P0014 can cause P0300, not the other way around. Focus on solving it in a logical order. Look over the flow chart I provided. If nothing else, check your actuator per the flow chart before doing anything else. It is relatively simple and worth the few minutes. It's much simpler than replacing sparks and coils.