Help needed!!
Thread Starter
Teching In
Joined: Jan 2015
Posts: 36
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Help needed!! Just finished up swapping a 40k miles lq4 into a 99 formula and started the car up for the first time in over a year!!! Hooked up a diagnostic computer to the car while it idled to get some data and make sure there weren't any major issues. Here's the data collected.
Bank 1 o2 sensor readings: front 430 mv rear 90 mv
Bank 2 o2 sensor readings: front 120 mv rear 90 mv
Open loop on the computer cylinder #1 has about 2 misses every 2 minutes. Closed loop cylinder #1 misses 100 times in 2 minutes.
Also note: computer has not been tuned yet.
My questions are:
#1 what are normal o2 readings?
#2 the spark plugs and wires are all good, so what could be causing the miss fire in cylinder #1?
#3 will this be corrected with just a tune or are there bigger issues I should be trying to find?
Bank 1 o2 sensor readings: front 430 mv rear 90 mv
Bank 2 o2 sensor readings: front 120 mv rear 90 mv
Open loop on the computer cylinder #1 has about 2 misses every 2 minutes. Closed loop cylinder #1 misses 100 times in 2 minutes.
Also note: computer has not been tuned yet.
My questions are:
#1 what are normal o2 readings?
#2 the spark plugs and wires are all good, so what could be causing the miss fire in cylinder #1?
#3 will this be corrected with just a tune or are there bigger issues I should be trying to find?
