Rb20 running on 5 cylinders?

[krystalized_jdm]

Hi

On my way to the saskatoon car show I noticed an issue I thought I had fixed.

Basically what happens is my car runs really really rough. It makes a rumblyish sound and almost sound like it has a stroker kit. In my opinion, I think one of the cylinders isn't firing.

At first I thought it was bad fuel, which I put in 3 weeks ago. I have went thro about 3 tanks of 91 shell premium 0% ethanol and I still have the issue. Ill post a video about how it sounds and maybe someone will pinpoint whats going on.

Another issue, I was trying to hook up a obd reader to my car w/ my buddies laptop. I couldn't seem to find the plug for it. Anyone know were? Its a hcr32 four door


cheers
- Stephen

[GTS-James]

obd1 is by the fuse panel under the steering wheel, pull ur coil packs and check them, also pull ur spark plugs and check the gap on them

[nelsonmxmarc]

You'll know off the bat if one cylinder isn't firing as soon as you pull the plugs. Rather than using an OBD logger to check for issues, just do a simple diagnostic on the car itself by grounding the 2 pins on the connector itself. There are a dozen DIY write up's lingering around on that topic.

[krystalized_jdm]

Okay, I'll be sure to check that.

I also noticed something fairly.... ODD.

My car used to ONLY do this when it was cold, and when I mean cold, I mean dead cold after sitting a day. It'd make a.....metal shimmying sound if you can call it that.
It does it at about 3k revs, either speeding up SLOWLY or slowing down SLOWLY. ONLY DOES IT SLOWLY. If I throttle up past 3k, ti doesn't do it (or maybe i dont hear it?)

Any clues on this? Is it relevant?