My 2002 chevy trailblazer keeps loosing power in the gas petal?

Asked by Feb 08, 2017 at 11:06 AM about the 2002 Chevrolet TrailBlazer

Question type: Maintenance & Repair

My car will run good at least a week
straight, then it suddenly looses power in
the gas petal, I'm thinking like I can have
my feet on the gas and it doesn't
accelerate. I can be in traffic and it just
happens, I have to pull on side the
highway. I have changed the throttle body&
fuel filter & pump. What can be the
problem

4 Answers

75,515

There are a few things, first is the check engine light on? Possible causes, fuel pressure, the gas pedal itself as this is a drive by wire set-up, the Throttle Positioning Sensor, a plugged catalytic converter.

1 of 1 people found this helpful.

How would you know if it's the catalytic converter?? What can cause the fuel pressure to be too cool or high?? I just replaced the throttle body, so how can it be the throttle sensor My check engine light has always been on, but when I had it checked, the only code for it was dealing with coolant fan, (never had a problem with the temperature level)

75,515

I don't know these things, so I have to ask. To check the cat drive it and get it hot, park in a dark area with the engine still running, the cat would be glowing orange if it is plugged up. Also with the check engine light on all the time you don't know if you have another new code. I would suggest having it scanned and write down the codes in-case we need them to fix your problem. If you replaced the throttle body then the TPS is new also. But on these years the plugin to the TPS, the wires brake internally. At least where I live when I buy a TPS it comes with a new plugin. So we have to start somewhere. Fuel pressure is easy to check, just need a fuel pressure gauge.

1 of 1 people found this helpful.

Ok I'm gone go have it put on a machine & let you know what it says

Your Answer

TrailBlazer

Looking for a Used TrailBlazer in your area?

CarGurus has 42 nationwide TrailBlazer listings starting at $3,490.

Postal Code:

Chevrolet TrailBlazer Experts

  • #1
    bigdogracer
    Reputation
    970
  • #2
    Tom Demyan
    Reputation
    890
  • #3
    tennisshoes
    Reputation
    710
View All

Related Models For Sale

Used Chevrolet Tahoe
8 Great Deals out of 748 listings starting at $3,995
Used Jeep Grand Cherokee
116 Great Deals out of 3,470 listings starting at $2,500
Used Chevrolet Silverado 1500
192 Great Deals out of 9,738 listings starting at $1,700
Used GMC Envoy
8 Great Deals out of 40 listings starting at $2,495
Used Ford Explorer
40 Great Deals out of 1,504 listings starting at $1,799
Used Chevrolet TrailBlazer EXT
9 listings starting at $1,399
Used Chevrolet Impala
168 Great Deals out of 1,059 listings starting at $996
Used Chevrolet Camaro
863 listings starting at $12,000
Used Ford F-150
581 Great Deals out of 10,750 listings starting at $3,300
Used Dodge Durango
153 Great Deals out of 1,114 listings starting at $1,888
Used Chevrolet Blazer
15 listings starting at $1,700
Used GMC Yukon
11 Great Deals out of 895 listings starting at $2,500

Used Cars For Sale

2009 Chevrolet TrailBlazer For Sale
3 listings starting at $5,995
2008 Chevrolet TrailBlazer For Sale
8 listings starting at $4,888
2007 Chevrolet TrailBlazer For Sale
8 listings starting at $3,490
2006 Chevrolet TrailBlazer For Sale
4 listings starting at $5,995
2005 Chevrolet TrailBlazer For Sale
7 listings starting at $4,499

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.