Tps sensor and mass air flow senspr low voltage. Help gurus.

10

Asked by May 18, 2015 at 08:20 PM about the 2002 Pontiac Grand Prix SE

Question type: Maintenance & Repair

So I did a cat delete replaced all spark plugs
and wires now have a tps sensor low
voltage and mass air flow sensor low
voltage and random multiple misfires.
Could it be something simple or am I
tearing into the firewall to find the break? I
can unplug both sensors and the car stays
running plus two others idle sensor maybe
and another. 2002 grand prix 3100 series

3 Answers

565

Unplug Both o2 sensors upstream and down stream One at a time. While you monitor the mass air, and Tps signal voltage you will find that one of them, the heater circuit is shorted.

10

How do I fix that? Disable sensor 2?

1 people found this helpful.
565

Just unplug them one at a time

Your Answer

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 1,805 nationwide Grand Prix listings starting at $2,008.

ZIP:

Pontiac Grand Prix Experts

  • #1
    Js08016
    Reputation
    4,650
  • #2
    Tom Demyan
    Reputation
    3,220
  • #3
    munron
    Reputation
    2,690
View All

Related Models For Sale

Used Chevrolet Impala
397 Great Deals out of 25,595 listings starting at $799
Used Chevrolet Monte Carlo
3 Great Deals out of 937 listings starting at $3,900
Used Pontiac Bonneville
316 listings starting at $3,395
Used Chevrolet Camaro
224 Great Deals out of 28,922 listings starting at $3,900
Used Ford Mustang
270 Great Deals out of 37,081 listings starting at $2,150
Used Pontiac Grand Am
723 listings starting at $1,700
Used Chevrolet Malibu
480 Great Deals out of 49,315 listings starting at $2,000
Used Pontiac Firebird
7 Great Deals out of 674 listings starting at $3,695
Used Nissan Maxima
200 Great Deals out of 17,499 listings starting at $1,900

Used Cars For Sale

2008 Pontiac Grand Prix For Sale
304 listings starting at $3,995
2007 Pontiac Grand Prix For Sale
276 listings starting at $2,725
2006 Pontiac Grand Prix For Sale
290 listings starting at $2,008
2005 Pontiac Grand Prix For Sale
244 listings starting at $4,500

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.