Question about 1992 Chevrolet Suburban

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Suburban loses power when driven over 50mph, it CHUGS!!

Everytime I go over 50mph the truck seems to lose power and "chugs" like its not getting gas or something. runs fine in town only have problem when getting on interstate! doesnt matter if gas is full or half since its done it both ways.

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  • mytigjmc Feb 23, 2009

    We have the same problem at 20-30 mph, we believe it is the throttle position sensor. Haven't gotten it fixed yet, we have bigger fish to worry about! If you change yours, let us know if it solves the problem!



    Thanks

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Try the fuel filter on the inside of the frame rail on the drivers side , i had the same problem and it worked for me , takes about 30 mins and is worth trying before resorting to replacing more expensive components.

Posted on Apr 03, 2009

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The second poster is right it may very well be the throttle position sensor. I had the same issue but it turned out to be an oxygen sensor that had been detecting a too rich fuel mixture in one of the cylinders and eventually failed. I would take the vehicle to a shop and have the codes read off the vehicle. In the US Autozone will do this for you for free and print out a list of codes found.Either way it should help pinpoint the issue a bit better.

Posted on Mar 08, 2009

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