Question about 2002 Saturn VUE
Power steering ,tac and speedometer quit working. Brake and security lights are on all the time. Some times it will quit running but start right back up run for about 5 seconds and shut off again. Will do this several times before it will stay running. Slowed way down a couple of times with gas feed clear down and Reduced power light came on on dash Had it checked at 2 places and is showing CODE # U2107 No one seems to be able to tell me what this code is or how to fix it.
"U" codes indicate a network communications problem
could be in the wiring and harness connections between the sensor and the ECM or CPU program
2107 concerns the throttle actuator control (TAC) module --processor fault ===causes --TAC control module
check wiring and all connections
Posted on Jun 04, 2017
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Posted on Jan 02, 2017
One question, have you replaced the ECTS (Electronic Cooling Temperature Sensor)? These cause no end of different seemingly unrelated problems on Saturns. Peice is about ten bucks and is an easy install. Just search on youtube for a how-to video. Even if that's not the problem it is reccommended to replace this peice just the same as they ALL end up going bad at some point.
If that's not a fix, start pulling plugs. Check to see if they're correctly gapped and if they have any damage/corrosion. If you're running Platinum plugs, immediatly change to a copper plug as Platinums have no place in these motors. Most people have the best luck with NGK copper.
Check to make sure that your plug wires haven't been crossed. This sounds like a plug or wire issue most likely so it has to be in that family, if the plugs are good, wires good and not crossed, sensors are fine, then time to replace your coil packs. If you've replaced everything up to the coil packs then that is most likely the cause of your dillema.
Posted on Oct 25, 2008
SOME TIME PCM GET A VOLTAGE SPIKE.OR ELECTRICAL INTERFERENCE WILL CAUSE SERVICE LIGHT TO COME ON WITH NO CODES.IF IT KEEP HAPPENING TAKE IT TO DEALERSHIP TO CHECK IT OUT.
Posted on Aug 12, 2009
usually when it gets colder outside the car will misfire and run rough because the ignition module/coil pack goes bad and makes it misfire,youre gonna have to replace the coil and module,,its the black long piece that sits on top of the spark plugs,1 wire connector and 4 10mm bolts remove them and pull up hard to pop the plug boots off the spark plugs,then install the new parts and you should be ok
Posted on Oct 20, 2009
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It is possible for the Speedometer and Tac gauge not to work but will not affect the way the transmission works. If the problem is in the interment cluster the transmission can still receive the input from the speed sensor. Does the check engine light come on? If the transmission isn't receiving the signal the check engine light will come on and set code. If the check engine light isn't coming on or doesn't set code for speed sensor signal you problem is more likely to be in the interment cluster. The RPM would be the same.
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