I/m readiness test and cel reading

Asked by Beau May 23, 2019 at 06:00 PM about the 1997 Mercury Grand Marquis

Question type: Maintenance & Repair

My grand marquis was running poorly and had a cel on so i
went and bought the noxwell nt201 to check it. It had 4
codes, tps, iac, egr and this p0430. I had shop change the
tps, iac, egr, maf and cleaned throttle body and egr ports. I
drove it after resetting it and only p0430 came back. Took it
back to shop and then they changed both o2 behind the
catalytic converters. Drove it home to get the same code?
So after spending 1800$ it still has something wrong. I
hooked up the scanner and used the i/m readiness and the
abbreviation mil had a light bulb, hcat had a red circle with
line through it, and the same with air had the circle with line
through it? Thank you for any insight or information

2 Answers

I also looked under freeze frame and it reaf load pct 23.5, ect 176, shortft1 0.8%, shortft2 100% longft 0.8, longft 100%...thanks

Car runs great besides when i slow down and turn it will bog down everyonce in a while, and about once a month it will stall turning into parking lot

Your Answer:

Mercury Grand Marquis Experts

  • #1
    Tracy Hooks
  • #2
  • #3
View All

Find great deals from top-rated dealers


Related Models For Sale

Used Lincoln Town Car
12 listings starting at $5,899
Used Ford Crown Victoria
24 listings starting at $6,300
Used Chevrolet Impala
38 Great Deals out of 962 listings starting at $2,495
Used Ford F-150
264 Great Deals out of 12,426 listings starting at $3,695
Used Ford Mustang
40 Great Deals out of 1,804 listings starting at $5,750
Used Toyota Camry
62 Great Deals out of 1,703 listings starting at $2,888
Used Honda Accord
52 Great Deals out of 1,939 listings starting at $1,495
Used Chevrolet Tahoe
23 Great Deals out of 766 listings starting at $6,871
Used Lincoln Continental
33 listings starting at $37,000
Used Ford Taurus
10 Great Deals out of 357 listings starting at $3,500

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.