Question about 2001 Hyundai XG300

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Sorry if I upset you, it's not what I meant. The

Sorry if I upset you, it's not what I meant. The car is suffering from a P1191 and P1193 code. It won't idle or even drive. Give it gas, and it sputters to 3k max. When I wiggled conntectors and unplugged the MAF, it made this odd pop pop pop sound like 5-6 through the intake when I pushed on the brake pedal. The ONLY way I can get the car to move at all is unplugging the battery to reset the ECU, leave the MAF unplugged, then put the battery back on. It'll start, but it idles at like 2k, will still only let me rev it to 3k, and if I push the brake pedal, it drops to a normal idle. It's definately running rich this way because I can smell the gas at the muffler. Ive been told to replace everything from the TPS, APPS, to input/output speed sensors on the transmission. I just need to know for sure instead of throwing parts at it. I've read plenty of threads on the forums using 1191 and 1193 as keywords, but people either start the thread and never reply what the fix was, or after spending a few thousand at the dealership, the problem returns a week or two later. Any suggestions?

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  • m5james Jun 17, 2009

    The vac port is below and to the left of the MAF connector, correct? The car I believe is already in limp mode, the 1191 and 1193 are limp mode codes for low idle/stall. Even after resetting the codes via a code reader, it still won't rev past 3k, so something is still making the car go into limp mode. When it's doing the hi idle thing, if I plug the MAF back in, it goes to a super lumpy idle around 500-600rpms and won't rev at all anymore. Its so weird how it'll rev w/ no MAF connected, and won't rev w/ it connected. That's where it started throwing me off and made me wonder if it's the TPS or the APPS, but everything has weird associations in this car to me now :) I have no idea where the charcoal canister is or how to check the purge valve, you have directions or pics you can email me? I'll try to find the EGR vavle and clean it.

    If something happens on these forums where it starts forcing me to pay, can you email me at m5james@yahoo.com instead?

  • m5james Jun 17, 2009

    No, I was talking to someone else about how I mentioned that it seems some people didn't have a clue, and the responder reacted like I meant it personally towards him. At 1st I thought the popping was the TB blade opening and closing super fast, but after removing the intake tubing and watching, it sounds like its coming from the sensor below the TB blade. It happens when I disconnect the MAF while the car is running, then pushing on the brake pedal. Once I reset the ECU, it stops doing it, so I know it's just a sensor/computer freaking out thing.

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The mass air flow sensor can cause this but you have to plug the vac. port when you disconnect it, then it should run in limp in mode and should not rev up. If it revs up you have a vacuum leak somewhere try starting fluid and spray it around the intake and the gas recover tank to see if there is a leak there. the other things that can cause this is a stuck open purge valve on the charcoal canister, a intake leak or the pipes for the intake loose or cracked, also the PVC valve hose may be cracked try these first then pull the egr valve and clean the pint al that will tell you if you have a problem. since it's running rich it's the egr valve or a bad mass air flow sensor.

Posted on Jun 17, 2009

  • Bruce Hathcock Jun 17, 2009

    I was not upset if you were talking to me, I eal with cars and it's black and white with some gray area's I try to sound like a text book it's how I read and fix problems, but if it's poping thew the valves then you have jumped time or have sticking valves or a bad rotor or moisture in it or a defective coil on the two cylinders you were talking about.

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