97 RS 420a NT Manual

Car just started cutting out upon acceleration. Misses like it's starving or flooding. It's worst from a dead start and at low RPM's, especially if I use any throttle.

At low (1500-1800)RPM if I quickly push the gas about 1/2 way down I get a backfire up front like in the headers. (that's what it sounds like anyway)

This happens only under a load. In neutral I can gun it from idle on up effortlessly. Also, after taking off, if I keep the tach over 3000 I can run WOT in between shifts if I want to.

Any help greatly appreciated. I'm going outside now to check out whatever I can. i.e. plugs, wires, CAI... Thanks guys!

Ok, the plugs, wires & coil pak are fine. I didn't think it was electrical. What should I check next?

Captain Caveman

96 RS Turbo 11.414 @ 119.62 MSNS, Crower 2 NA cams, BW366, 10.5 comp, UDP, 60mm TB, W/A intercooler, 3.55 tranny 567.9whp 430tq
97 RS NA 13.188 @ 103.87 MSnS powered 12.5 comp, Crower 3's and 219.4whp with 175tq
98 RS DD 12.5 comp on stock ECU, LTH, Crower 2's, Koni, GC, Hypercoil, DG hats
99 OZ 5sp Stocker 15.856 @ 85.97
99 GS stocker auto 17.7@77mph!

wiki home page:http://www.2gnt.com/index.php?d=bullettdsm

I have a scan gauge, I'll check. Thanks

2gnt: '99 RS-T, killed by a toyota, pending rebuild...
Daily: Volt
Daily #2: '99 EVG ebike- STOLEN by PEDRO

Backfire in exhaust means your too rich.....backfire in intake means your lean

That sounds right. Thanks. I still think it's in the exhaust. What might be the cause of running rich?

BTW, I'm not throwing any codes, the upstream sensor is new too.

Thanks, Erik. I'll get a meter tomorow and check them again.

Ok, I want to order a coil pak. An OBX is $52 shipped. Makes the same claim as MSD which I couldn't find for under $60+shppg. Is there any preference?

OBX also has wires for about $55 shipped. That's the biggest coppers I can find.

I want to put a ground kit on. Just seems like a good idea. I'll most likely buy one. Starting school soon.... I'll post what I can soon too.

Thanks.

Hell, I prefer stock.

Captain Caveman

96 RS Turbo 11.414 @ 119.62 MSNS, Crower 2 NA cams, BW366, 10.5 comp, UDP, 60mm TB, W/A intercooler, 3.55 tranny 567.9whp 430tq
97 RS NA 13.188 @ 103.87 MSnS powered 12.5 comp, Crower 3's and 219.4whp with 175tq
98 RS DD 12.5 comp on stock ECU, LTH, Crower 2's, Koni, GC, Hypercoil, DG hats
99 OZ 5sp Stocker 15.856 @ 85.97
99 GS stocker auto 17.7@77mph!

wiki home page:http://www.2gnt.com/index.php?d=bullettdsm

Lol, I just ordered a MSD. It'll be here Thur. It ended up being cheaper than Duralast, OBX, Signal,(never heard of Signal before), and satan.

My car's getting worse. I'm not driving it more then necessary now. I noticed one terminal on the coil shows signs of arcing/burning. Geez I sure hope it's the coil and not the ECU.

Mine had a arced/burnt terminal on it too. It never caused me a problem physically but i do think it manifested itself in an uber choppy dyno graph, so i wouldn't worry about it too much. I think it had something to do with a torn boot in the spark plug wires...that reminds me i need to change them...

95 RS sold...

I'm replacing the coil and wires tomorow. I have a fuel pump on the way and will do the filter while I'm at it. I wander hundreds of miles from home in this thing ocasionally.

You should check your catalytic converter. If you can get a back pressure tester (its really a pressure gauge and a special tool that threads into your pre-cat O2 sensor hole) you would be able to figure out if its plugged. If you stab the throttle from idle till 6500rpms and your readings are 1 to 1.5 psi you might want to get a new one.

Just a thought.

"Treat a human being like a human being, you'll be suprised what happens".

Thank for the tip Yo. I'll certainly put that in my what next list.

The problem was the coil all along. I replaced it with an MSD one along with the plug wires.

Good thing you decided on MSD. I wont buy OBX anymore after my experience with their fuel rail.

Yeah, I'm happy with it already. Put on their wires too. OBX coils are round pin only and I had a flat pin connector. That caused my decision, lol.