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Car not running right after tune-up?
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Corey
Feb 14, 2013, 12:18:01 AM2/14/13
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I replaced my plugs, wires, and intake gasket. After doing this my car runs
rough, i know i have a leak on my throttle body gasket. now my car has very
slow acceleration, and it shakes more then usual and is louder. Any ideas?
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rough, i know i have a leak on my throttle body gasket. now my car has very
slow acceleration, and it shakes more then usual and is louder. Any ideas?
--
posted from
http://www.motorsforum.com/mitsubishi/car-not-running-right-after-tune-up-8832-.htm
using MotorsForum's Web, RSS and Social Media Interface to
alt.autos.mitsubishi and other automotive groups
Guv Bob
Apr 28, 2013, 2:19:17 PM4/28/13
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"Corey" <065b0505594b06f549...@example.com> wrote in message news:3a7cd$511c7389$42bb6765$18...@news.flashnewsgroups.com...
Just noticed your posting and may too late - did you get this problem solved? If not....
If you already checked everything that was replaced, check all of the 5 million sensor and vacuum connections. My regular mechanic could not troubleshoot my 90 Eclipse' electrical problem so I spent several weekends learning about smog sensors, etc. Turns out for me, the O2 sensor wire insulation had come in contact with the heat shield and was shorting out. Fixing that made some difference. Last thing was the ECU (computer), (located inside the car, under the gear shift cover. Access is from the passenger side.) I could see 2 burnt Rubycon brand capacitors, replaced them and runs like new again.
Searching online, I saw that the Rubycon capacitors were known to have a problem, so I'm not a happy camper that I spent weeks checking all the wrong things when this should have been a recall item. I wonder how many people have bought a $600-1200 replacement computer when this should have been a factory recall.
Replacing the capacitors is not that big a deal. Don't try to unsolder the leads from the circuit board, though. Just snip them off and solder new leads onto the old leads. My leads ended up longer than I wanted and I had to wrap good with electrical tape to avoid any shorts.
Below is from http://members.shaw.ca/costall/1000Q/answers-ECU.htm#105degreecaps:
"Several 1G owners have found that the electrolytic capacitors in their ECUs leak after roughly seven years. This problem is not limited to DSMs, engine computers or even the automobile world - many types of equipment suffer from similar problems, as electrolytic capacitors are commonly used in electronic equipment.
"Excessive leakage can cause very troublesome damage to the printed circuit board (PCB) inside the ECU. This is very difficult to fix unless you have access to professional soldering equipment and tools. For those that do, they will find the repair difficulty on a par with any typical conformally-coated through-hole PCB repair. "
If you already checked everything that was replaced, check all of the 5 million sensor and vacuum connections. My regular mechanic could not troubleshoot my 90 Eclipse' electrical problem so I spent several weekends learning about smog sensors, etc. Turns out for me, the O2 sensor wire insulation had come in contact with the heat shield and was shorting out. Fixing that made some difference. Last thing was the ECU (computer), (located inside the car, under the gear shift cover. Access is from the passenger side.) I could see 2 burnt Rubycon brand capacitors, replaced them and runs like new again.
Searching online, I saw that the Rubycon capacitors were known to have a problem, so I'm not a happy camper that I spent weeks checking all the wrong things when this should have been a recall item. I wonder how many people have bought a $600-1200 replacement computer when this should have been a factory recall.
Replacing the capacitors is not that big a deal. Don't try to unsolder the leads from the circuit board, though. Just snip them off and solder new leads onto the old leads. My leads ended up longer than I wanted and I had to wrap good with electrical tape to avoid any shorts.
Below is from http://members.shaw.ca/costall/1000Q/answers-ECU.htm#105degreecaps:
"Several 1G owners have found that the electrolytic capacitors in their ECUs leak after roughly seven years. This problem is not limited to DSMs, engine computers or even the automobile world - many types of equipment suffer from similar problems, as electrolytic capacitors are commonly used in electronic equipment.
"Excessive leakage can cause very troublesome damage to the printed circuit board (PCB) inside the ECU. This is very difficult to fix unless you have access to professional soldering equipment and tools. For those that do, they will find the repair difficulty on a par with any typical conformally-coated through-hole PCB repair. "
Guv Bob
Apr 28, 2013, 2:22:16 PM4/28/13
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"Guv Bob" <guvbo...@yahooooooooooooooo.com> wrote in message news:2dOdnXnBILO99eDM...@earthlink.com...
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