Question about 2003 Mitsubishi Lancer

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Can not communicate with PCM via diagnostic scanner

Car started smelling like rotten eggs and started bogging down. Was losing power, changed cat conv, also found that alt was bad putting out 18v, changed that and put in new battery also. Now the charging system still not working and can't communicate with PCM.

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Check for power on pin 16 of the connector.Can not communicate with PCM via diagnostic scanne - 0ff5536b-47c0-4d21-a6b6-52e5ced78256.jpg

Posted on Jan 03, 2014


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SOURCE: '93 Mitsubishi Mirage Still Not Starting

Hi there are few things that you have not check that can cause this problem,cap and rotor , pick up coil regular coil ,fuse (start with the less expensives) good luck

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SOURCE: I have a 1995 Mitsubishi Montero, new battery and

You need to check the charging system. Take a volt OHM meter and go to the positive and then the negative posts. It will tell you how many volts it is putting out. If it is not charging at least 13.9 volts, then you bought a faulty alternator. If the alternator is good then check the belts to make sure they are tight enough. When you push on the belt at about 3 inches from the alternator it should not give more than 1/4 to 1/2 inch. If it does move more, then tighten the belts. If it is a V belt, just tighten the alternator. If a serpentine belt, check the belt tensioner and belt routing to make sure it is on right. The diagram should be under the hood.

Posted on Nov 16, 2010

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My 1995 cadillac eldorado was losing power like the car was running out of gas and now smell exhaust

When you say smell like exhaust, does it smell like rotten eggs (sulfur)? If so, could be catalytic converter clogged up.

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Whats the problem smells like rotten eggs,no power, car chugs and bogs down ?

Sounds to me like the catalytic converter is shot. The "rotten egg" smell and stalling out is a dead giveaway. The converter is plugged up and cannot let the exhaust out of the tail pipe like it should. The exhaust is building up back pressure in the exhaust system, causing the engine to lose power and stall. Take it to a qualified shop and have the catalytic converter replaced.

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Depends. A five gas analyser can tell the amount of NOX, CO, CO2 which will let you know based on what the values are. You can do a visual test at night if the car is running. Just look underneath. If it is glowing hot it is plugged. If you smell rotten eggs coming from the exhaust it is a good sign its bad. You can beat on it with your hand and if you hear debri inside being moved by the beating it needs replaced. A dianostic like a cheap scanner will tell you your downstream O2 sensor or bank 1 sensor 2 or bank 2 sensor 2 has a fault code but that isn't exactly going to tell you the Cat is bad. If your scanner has the ability to give you data you can see if the value is high or low depending on what the vehicle is supposed to read. If your upstream sensor 1 is reading good and your down stream sensor is reading bad there is most likely a hole between them. The sure sign of a bad Cat is lose of power, the smell of rotten eggs, its glowing under the car from heat caused by blockage, your O2 sensors are acting up or throwing codes, you can hear a leak coming from it or see one. Some Cats don't stink when they go bad because of the type of catalyst used inside. So if you know what your doing you can use a dianostic test to detect a bad catalytic converter.

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Not sure if engine coolant smells like rotten egs when it burns inside the cylinders , but it sounds like you may have blown a head gasket. Coolant and/or oil could be getting inside combustion chamber. Another possibility is that the catyletic converter might have broken up and colapsed onto the screen where it goes into the exhaust. Might give the rotten egg smell and block the exhaust enough to cause backpressure sufficient to cause the engine to run poorly too.
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does our trasmission change harder or kick when changing or have smell or hissind sound of something getting hot you might have a block catalytic convertor exhaust is not comming out that why the engine dont sound the same and no power . hope it a fixya thanks pierre

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