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Car running rough, no check engine light

Tiny
DMGRAFFFX
  • MEMBER
  • 2001 MITSUBISHI GALANT
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 143,267 MILES
Can’t figure out my problem. It was running decent after I put in new plugs, wire set and VC gasket. But a few days ago it started to run like really badly. Here are my live scan results:
fuel sys 1 cl
fuel sys 2 n/a
calc load 22.0(%)
ECT 167 (f)
stft b1 -1.6(%)
ltft b1 3.1(%)
eng rpm 707
veh speed 0(mph)
iat 102(f)
maf 0.37 (lb/min)
tps 0.0 (%)
o2s b1s2 .0840 (v)
stft b1s1 -0.8 (%)
02s b1s2 0.120 (v)
stft b1s2 -1.6 (%)
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Friday, September 6th, 2019 AT 5:58 PM

1 Reply

Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello,

You probably want to double check the valve cover gasket and the Positive Crankcase Ventilation (PCV) and make sure everything is hooked up. Confirm that the check ball in the PCV valve operates freely. Also check to see if you have a vacuum leak anywhere. Here is a link below for you to go to explaining how to properly check for vacuum leaks:

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Please go through this guide and get back to us with what you are able to find out. We can go from there if needed.

Thanks,
Alex
2CarPros
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Sunday, September 8th, 2019 AT 10:37 PM

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