My 2008 Chevrolet Express 1500 is indicating Engine Power Reduced and Service TPS System, can a faulty tps system and or a really bad catalytic converter be the culprit?

20

Asked by Jan 30, 2016 at 05:32 AM about the 2008 Chevrolet Express Cargo 1500

Question type: Maintenance & Repair

I should have replace it at least a year ago, the catalytic converter has been bad, can it or the service tps system, or needing an oil change bad, (oil shows 0 %  for being effective and I know that I am not using the correct term for oil life), be the cause for my 2008 Chevrolet Express going into Engine Power Reduced mode? Also, when I am on the highway and I have gotten past an incline I can get it up to about 50 mph, but once I slow down or stop it has really low power taking off and won't pull any hill or slight incline. When it is idling, it is running and sounding like a tractor, vibrating and engine seems to rattle the whole front end. If I give it a little gas, it quite down a little and doesn't vibrate as much. I was told by someone that one of the sensors in the Catalytic Converter, or in the emission system has to do with the throttle, (throttle position sensor?), and because it is bad, the system doesn't know how much gas to give or how fast the car may be going because of not knowing how much the throttle is open then the engine power is reduced as a safety.

2 Answers

75,585

Something like that. The root of the problem would be the catalytic converter being plugged up, and the 02 sensor reading out of range, so the computer is just trying to adjust air fuel mixture the best it can, causing either a rich or lean condition. I would start by replacing the catalytic converter, getting an oil change, oil light would need to be reset, and clear all the codes. Then drive it to see if the check engine light comes back on, if it does, then you will have a more true sense of any more problems. The code or codes would tell the story at this time.

Best Answer Mark helpful
20

I believe that would definitely be the best thing to do and it is where we will start.

Your Answer

Chevrolet Express Cargo Experts

  • #1
    Tom Demyan
    Reputation
    190
  • #2
    Rowefast
    Reputation
    160
  • #3
    DONCHAUMPSR
    Reputation
    130
View All

Related Models For Sale

Used Ford E-Series Cargo
78 Great Deals out of 3,161 listings starting at $2,495
Used Chevrolet Express
65 Great Deals out of 5,489 listings starting at $3,500
Used GMC Savana Cargo
41 Great Deals out of 3,505 listings starting at $2,399
Used Ford E-Series Wagon
35 Great Deals out of 1,127 listings starting at $3,900
Used Ford Transit Cargo
121 Great Deals out of 19,300 listings starting at $13,500
Used Chevrolet Silverado 2500HD
344 Great Deals out of 31,010 listings starting at $2,499
Used Chevrolet Silverado 1500
2,496 Great Deals out of 177,872 listings starting at $699
Used Ford F-150
2,933 Great Deals out of 215,840 listings starting at $1,295
Used GMC Savana
3 Great Deals out of 1,127 listings starting at $7,300
Used Dodge Sprinter Cargo
206 listings starting at $4,999

Used Cars For Sale

2013 Chevrolet Express Cargo 1500 For Sale
83 listings starting at $7,500

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.