I have a full Pacesetter exaust on my car. Headder, downpipe, (magnaflow cat), and a resonatorless pacesetter cat-back exaust, with a monza muffler. The car runs great once it's warmed up, the problem is that once it hits open loop the car forgets the exaust is on the car and it starts to sputter, and is undrivable for a about 20 seconds. I've been just leeting to car pass this stage before I drive it by holding the reves up until it starts coughing, then rev it a few times until it comes out of it, but thats getting old. Anyone know if I can re-flash the ECU for the exaust, or if there's a trick to fix this. Also, my check engine light NEVER comes on, and once the car adjusts itself, it runs exeptionally well, I just don't get why the ECM can't remember the exaust is on the car. I'm pretty sure it has something to do the the Oxygen sensor reading wrong when I first start the car.
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I'm pretty sure it has something to do the the Oxygen sensor reading wrong when I first start the car.
O2 sensors dont work correctly until they're up to a certain temprature. Try getting a heated O2 sensor (there should be a post somewhere around on the board on how to install one) and that should correct the problem.
I've never heard of anything like that, I don't suppose thats something you can pick up at autozone or napa.
My cav runs like crap when cold. I might try the heated 02, that was mentioned before.
PRND321 Till I DIE
Old Motor: 160whp & 152ft/lbs, 1/4 Mile 15.4 @88.2
M45 + LD9 + 4T40-E, GO GO GO
Weebel wrote:I've never heard of anything like that, I don't suppose thats something you can pick up at autozone or napa.
You can, some cars have a heated O2 stock. So they're readily available. In fact, the O2 sensor behind the cat on the J-body is a heated sensor. You'll probably have to pull a pigtail from somewhere to hook it up, or just splice in the wires for the heated O2 (not as pretty looking).
Hopfully the wires are long enough, my headder places the O2 sensor so far down that I was lucky to get it to reach. Do you really think a heated O2 sensor will really warm up faster than the exaust manifold can heat it? If it's not a big difference, I'm not sure it will be worth the trouble or not.
A heated sensor can get into closed loop in under a minute installed in a header, probably faster in an iron manifold.
Heated O2 sensor swap
I found the casper electronics page that has the adapter, that would be the way I wan't to go, but I'm having trouble with the web-page, It would be nice to find a phone # and order it that way.
