OBD II reader

[dalejrfanone]

Anyone here any good at reading a obd II reader for a car? Im having an issue with my car and i took some videos of the data streams but some of the data i don't understand what they mean. any help would greatly be appreciated.

 

[K.Chuck]

I sure am, what you got?

 

[Highbank]

Drivabilty issues or what?

 

[dalejrfanone]

Sorry my car is a 1998 grand prix gtp and im getting a p0300 (Random misfire) code sometimes, and the sometimes ill get a p0301 (Cylinder 1 misfire) or a p0303 (cylinder 3 misfire) the codes are different every time i erase the code and i changed plugs and wires, icm and coils. anyway here are the videos
[ame=http://www.youtube.com/watch?v=DrERQh_bPs8]engine data 1 - YouTube[/ame]
[ame=http://www.youtube.com/watch?v=EEM9CsaqwF4]engine data 2 - YouTube[/ame]
[ame=http://www.youtube.com/watch?v=Up7gG9bt3_Q]engine data 3 - YouTube[/ame]
[ame=http://www.youtube.com/watch?v=DkUpr2gybLg]engine data 4 - YouTube[/ame]
[ame=http://www.youtube.com/watch?v=PcC_iyHUxIg]engine data 5 - YouTube[/ame]
[ame=http://www.youtube.com/watch?v=rhi73-3tarc]engine data 6 - YouTube[/ame]

 

[K.Chuck]

Dose it have a 2.2l?

 

[dalejrfanone]

I just want to know if anything in the video's look's off that might cause a misfire. I was thinking maybe i might have to change lmi gasket.

 

[dalejrfanone]

Dose it have a 2.2l?

3.8 supercharged

 

[Highbank]

Which V6 is it?


OOPs my bad I see it's the 3.8 supercharged now

 

[K.Chuck]

Those year pontiacs have issues with ignition control modules on 2.2l and 3.8l engines. and would cause random misfires like your seeing. Could also be the coil pack as cylders 1 and 3 should be on the same firing pattern.

 

[dalejrfanone]

The car doesn't seem like it's misfiring, has lot's of power and don't cut out but it's real annoying having the engine light come on all the time.

 

[Highbank]

A compression check may be in order, an intake manifold leak could cause this
another thought< did you go back with oem plugs or something different?

 

[K.Chuck]

I would have the ignition control module checked, Its the first thing I always replace on late 90's GMs.

 

[dalejrfanone]

Those year pontiacs have issues with ignition control modules on 2.2l and 3.8l engines. and would cause random misfires like your seeing. Could also be the coil pack as cylders 1 and 3 should be on the same firing pattern.

ya, i changed the coils and ignition control from my parts car and the codes keep coming back and if i put the coils and ignition control back on my parts car the codes don't come on.

 

[dalejrfanone]

A compression check may be in order, an intake manifold leak could cause this
another thought< did you go back with oem plugs or something different?

ya i bought new oem plugs, and that's probably my next step is to do a compression test, i have a tester at work.

 

[K.Chuck]

They are a common failure part, those codes are highly likely this is the issue.

**** I just reread your post, let me look up some TCBs on the car and I will post back.