Looks like it's injector related, probably in the harness as some have mentioned. I replaced the cam and crank sensors since they're relatively easy, which didn't make a difference (didn't think it would). I then hooked up a noid light on #5 cylinder and it was pulsing as expected, so I hooked...
O2 wires checked out good. Also disconnected both upstream and downstream on driver's side and didn't change in the slightest. As an update, the car does in fact have cats. They installed high flow cats just after the headers that I wasn't aware of until I pulled the sills today.
YouTube link. This was before replacing coils and wires, when it was at its worst. It has gotten better since this video but still sporadically misses while idling or revving and borderline undrivable under load
Pulled the side skirt off this morning. No O2 sim, they just zip tied the secondary O2 up out of the way. The primary O2 has been extended and routed out of the way but the wrap is brittle so I’m sure it has gotten hot. Once I get a free day I’ll unwrap/inspect and repair if necessary...
I'm going to try to did into the O2 sensors tomorrow if I can get some time. I went ahead and replaced the coils/wires due to a couple mismatched plug wires from the previous owner (assuming they burned up a few). The car ran great for about 1/4 mile then back to misfiring, and still only on...
53,000 miles. If I load the stock tune it’ll throw an 02 code, which I expected to see, but zero cel if I have the aftermarket tune. No cats, so shouldn’t be an issue there. I was thinking possibly O2 wires but haven’t had a chance to dig into their location and inspect. I’m assuming once I take...
I've been lurking the forums for some time now while in process of finding/purchasing my Viper. Now that I've had the car a few months, I've run into an issue that I'm hopeful you guys can help with. Sorry for the length, but I'm trying to give as much info as possible.
The car is an '03 with...
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