Question about 1999 Jeep Wrangler

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Won't go past 40 miles per hour

My 1998 Jeep Grand Cherokee will not accelerate past 40 miles per hour. Changed the spark plugs, added fuel injector cleaner. There is a crack in my muffler pipe. Could that be the problem?

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  • johannamari2 Dec 01, 2008

    210,000

    i had the muffler replaced. my catalitic converter is messed up too. mechanic said to fix whatever is clogging these up first before getting a new converter. and i had them both replaced two years ago. i bought a tps sensor but haven't put it in. can it be my oxygen sensor too?

  • Anonymous Jan 01, 2009

    I have 1999 jeep wrangler at 58000 miles ihad muffler and catalitic converter installed since then every eight to twelve months i have to replace muffler because it rust out

  • Anonymous Mar 13, 2014

    Why won't my car go past 40 miles per hour?

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No not muffler problem could be bad gas or TPS sensor how many miles you have on it?

Posted on Nov 30, 2008

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