Z28_HESS

I did a search and it came up with O2 sensor I want to get another opinion.

This had started a while back and just got worse over time. At idle the engine is fine but when I get into it the engine gets a little sluggish and the exhaust sound changes also (just sounds sick). When I go WOT its even worse, its really sluggish and starts to back fire.

Also I have had the (low traction) light come on and the (abs inop) light come on. I tried turning the traction control button on but it just stayed off. When I would turn thr car off and back on then every thing would go back to normal.

I also had auto tap hooked up to the car and every thing came up to be fine

TIA,
Warren

Beast96Z

iTrader: (21)

Damn dude, you just can't win can you? I had somewhat of a problem like that in my 96 Z. It turned out to be a bad MAF. Seems like anything that would make you car run that bad would throw a code. Lots of things could cause it. Anything from the MAF, O2's, or even the TPS. Autotap should be able to show what is up with any of these.

HAMRHEAD

iTrader: (8)

Did any of this happen after adding Mods? Sometimes a simple tune helps if there are no codes and you MAF is working.

Z28_HESS

Yeah if its not one thing its another . I took it over to B&M and brad is the one who hooked up the auto tap. I also had him ride with me, he was kinda confused also. This started to happen before I tore my engine down to find the ticking. Oh yeah I replaced the oil pump o-ring, the lifters and the temp. sensor sending unit. No more low oil pressure, no more ticking and I have good temp. now.

Now, I have this damn problem . I want to fix everything before next friday so I can run my car at the track.

Z28_HESS

It has been dynotuned by Chris Robinson.

Beast96Z

iTrader: (21)

Try swapping in a few parts from BJ's car. I'd start with the MAF and TPS sensor. Both will throw off your A/F and cause flooding which would lead to sluggish performance and back firing. Swap them one at a time of course.

Z28_HESS

ok, well I just swapped bj's maf and tps to my car and it still ran like ****! Then I got under the car and found some wires that were melted from the headers which ran to the 02 sensors. I fixed all of that and she is still running like ****.

The car is still pulling pretty damn hard but I don't think she is putting out all that she has. While at WOT it pops a lot and does a little hesitating. So should I get some new 02 sensors and see if that will fix it.

Beast96Z

iTrader: (21)

Poping sounds more like a igniton related problem. Maybe some sort of misfire or possiblly a bad coil. If that was the case, it should have shown up in a cylinder misfire check on the A-tap. At least you have removed two factors from the equation now.

Z28_HESS

Im going to change out the spark plugs I hope that fixes the problem.

Z28_HESS

Just so this thread will not suck if someone does a search and finds there was no fix posted.

I replaced the spark plugs and she runs great now.

Beast96Z

iTrader: (21)

Sometimes we focus to much on the big stuff and forget about the little things....