1998 Trans Am -- DTC question
04-26-2010, 11:12 AM
#1
TECH Apprentice
Thread Starter
1998 Trans Am -- DTC question 1998 Trans Am
LS1
T56
---
Long tubes with no cats (just resonators) getting NO cat eff. Codes at all been drivig in highway and town for like 2 months??? Def wasn't tuned out before either.
Only dtc in getting is sometimes at WOT between 1 an 2 is p0103 maf over volume -- is this because intake/exhaust are flowing better?
LS1
T56
---
Long tubes with no cats (just resonators) getting NO cat eff. Codes at all been drivig in highway and town for like 2 months??? Def wasn't tuned out before either.
Only dtc in getting is sometimes at WOT between 1 an 2 is p0103 maf over volume -- is this because intake/exhaust are flowing better?
04-26-2010, 11:42 AM
#2
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Did someone install O2 sims at some point maybe?
As for the MAF code, you probably need to clean the MAF.
As for the MAF code, you probably need to clean the MAF.
04-26-2010, 12:04 PM
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K&N filters tend to cause build up on the MAF wires over time, I've seen many others with random MAF codes/issues due to this.
If you insist on using a K&N, you're going to have to clean the MAF from time to time for best operation.
As for why you have no cat codes after two months of driving, the only other thing I can think of is maybe someone before you had them tuned out. Or are you the original owner?
If you insist on using a K&N, you're going to have to clean the MAF from time to time for best operation.
As for why you have no cat codes after two months of driving, the only other thing I can think of is maybe someone before you had them tuned out. Or are you the original owner?
04-26-2010, 07:31 PM
#6
TECH Apprentice
Thread Starter
Talked to my buddy (only guy that touched this TA from day 1) and said this guy wouldnt put ANYTHING on it if it didn't come from a GM dealer, so tune is out of the question. Crazy theres no DTCs :S
==
Took out my MAF tonight, found 2/3 hot wires somewhat dirty, and the 1 thats by itself was BLACK like filthy. I used MAF cleaner, sprayed them all up till they were shiny metal. Cleared all history/current P0103 (MAF over vol.) codes and took her out. Well multiple 1-2 and 3-4 WOT shifts later, no DTCS. I do notice a CRAZY difference from 4000-Redline power though. Thing Pulls nice off the line and then boils the tires up around 4000rpm in 1st gear, I love it haha.
Im thinking was just a filthy MAF hotwire causing me issues!
Still confussed on the lack of CAT. codes...but meh, it's off, so Im happy
lol
==
Took out my MAF tonight, found 2/3 hot wires somewhat dirty, and the 1 thats by itself was BLACK like filthy. I used MAF cleaner, sprayed them all up till they were shiny metal. Cleared all history/current P0103 (MAF over vol.) codes and took her out. Well multiple 1-2 and 3-4 WOT shifts later, no DTCS. I do notice a CRAZY difference from 4000-Redline power though. Thing Pulls nice off the line and then boils the tires up around 4000rpm in 1st gear, I love it haha.
Im thinking was just a filthy MAF hotwire causing me issues!
Still confussed on the lack of CAT. codes...but meh, it's off, so Im happy
lol
05-03-2010, 09:22 PM
#7
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Hey! I ALWAYS get a P0103 after washing my motor. Maybe I shouldn't be blasting the engine with 60gpm of water when I clean it, however, after washing it runs like crap till all the water gets out of places it shouldn't be. EVERY TIME I wash, I get a P0103 during WOT.
SO, what I'm saying is you can also check for moist connectors from rain or humidity. I found that adding the jelly to the connections prevents the 0103 when I deluge my motor...
As the wise man Mel Tillis says in Cannon Ball Run 1 "It...it...it...it runs like S*%T....bu...bu...but its its its clean!"
SO, what I'm saying is you can also check for moist connectors from rain or humidity. I found that adding the jelly to the connections prevents the 0103 when I deluge my motor...
As the wise man Mel Tillis says in Cannon Ball Run 1 "It...it...it...it runs like S*%T....bu...bu...but its its its clean!"
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05-03-2010, 09:59 PM
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Did somebody put in O2 spacers? I.e. A spark plug defouler that's been bored out inside another spark plug defouler that's plugged into your exhaust pipes.
It's the ghetto "no CAT" workaround.
It's the ghetto "no CAT" workaround.
