Toyota Corolla Runs Bad When start it cold

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  • #11165 Reply


    My Toyota Corolla is running bad but not all the time. When I start it cold, engine runs great. When it warms up, there is a bad hesitation when i hit the gas. It goes away after a while of driving on the highway, but them comes back after driving around town. If my Toyota Corolla sits for like 10 minutes and try to start again, it is had to start. Just keeps cranking and cranking. Tested the ignition coils and replaced the spark plugs. going to change out the fuel filter next. Any other ideas of what the problem on my Toyota is anyone. HELP. Have read on other auto forums is could be the modulator. Does that sound like it is my problem. If it is I can buy it and replace it myself.

  • #11184 Reply



    Changing the fuel filter would be a good idea, but does not sound like your problem. The ignition module does sound like the problem on your Toyota. We would need to know what year and engine size in your Corolla to give you an idea of how to replace it. Different years and engine sizes are in different locations.

  • #13853 Reply


    I had a similar problem with my Toyota. It was a problem with the ignition. The mechanic repaired my car in about a few hours and did not cost much in labor. My Toyota runs and starts great now.

  • #10961 Reply


    Just replaced Gasket Cover. Started up drove 5 miles and car died; went over everything again? Need help something is obviously not right.

  • #11159 Reply


    Just replaced Gasket Cover. Started up drove 5 miles and car died; went over everything again? Need help something is obviously not right. Obviously I did (or my son did) step by step; yes I asked too; everything. So what would be the most common thing….it started fine after replacing gasket cover, drove 5 miles and just died??? It’s not ‘firing’, not the starter something with the connections?

    RE: I’d recommend going over everything again and checking connections, etc. Without seeing what you did, this kind of problem is hard to fix over the internet. Good Luck!

  • #11161 Reply


    po171 shows this code what the problem? where to start to correct the problem thanks.

    RE: P0171 is a trouble code for a lean condition, meaning the engine is getting more air than fuel which leans the mixture too much for the computer to adjust to. Usually a code like this is due to a vacuum leak somewhere. Check vacuum lines, air filter housing and tubing, brake booster hose, intake manifold, valve cover, PCV system, etc. Anywhere that air may be getting sucked into the intake system. Once you find the problem and correct it, the problem will be fixed and the code will clear.

  • #15053 Reply

    jery archie

    2001 lexus es300 shifts late first to second, code p0330

  • #15078 Reply


    Code P0330 on your Lexus is a knock sensor circuit problem. Most likely a bad sensor, although have seen wire harness problems for knock sensors. A knock sensor coed will cause your shifting problems so get that fixed, clear the code, drive it to make sure the transmission is shifting good now.

  • #16114 Reply


    My Toyota camry 2015 with 40,000miles.
    Check engine light P219D obd11 code won’t go away. I have cleaned the fuel filter, fuel injectors, changed spark plugs, checked the catalyst converter. Still the code keeps coming on after clearing it. Please help.

  • #17013 Reply


    My 2006 Camry’s light went on intermittently several days ago then pretty solid the next day. Now it hasn’t been on at all the last few days. Its only the ABS light and not the regular break light. The car is running fine. Should I bring it in? The light has never gone on before now.

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