Ruby Red Rocket Posted November 13, 2012 Share Posted November 13, 2012 Greetings LGT owners. I have a 2005 LGT wagon 5 speed with 140K on the clock. Mostly stock except for up pipe and oil pick up pipe. Runs great with one exception. Set the cruise control at 65MPH or higher and it holds for a mile or two then releases for no apparent reason. It seems to be related to speed--the faster you're going when you set the cruise the sooner it disengages. It also seems related to whether the car is going up or down hill. It's much more likely to disengage going uphill (when the engine is working harder). SO...HELP!!! Anyone out there had this problem? My mechanic is stumped. I may be reduced to a visit to the dealer (ugh+ ) Many thanks in advance! John Link to comment Share on other sites More sharing options...
IRNChip Posted November 24, 2012 Share Posted November 24, 2012 I have 190K on my 2005 5MT Legacy GT wagon, with pretty much the same problem at slightly higher speeds. No idea why, trusted mechanics don't either. I would love to have it operate normally again - anyone? Link to comment Share on other sites More sharing options...
Max Capacity Posted November 24, 2012 Share Posted November 24, 2012 You may need to thin the washer on the neutral safety switch. It's the upper switch on the side of the tranny. That fixed mine when it would drop out of CC going down hill. I had to grind it thinner twice. Since then it works all the time for years 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
Ruby Red Rocket Posted November 28, 2012 Author Share Posted November 28, 2012 You may need to thin the washer on the neutral safety switch. It's the upper switch on the side of the tranny. That fixed mine when it would drop out of CC going down hill. I had to grind it thinner twice. Since then it works all the time for years Thank you for taking the time to post what worked for you. As it happens, I visit my mechanic tomorrow (on another matter). I'll share your suggestion with him. I'll post how this resolves. Link to comment Share on other sites More sharing options...
Evan Posted March 5, 2013 Share Posted March 5, 2013 I have a similar problem, but never noticed if it is speed dependant. Did you have any luck resolving this? Link to comment Share on other sites More sharing options...
Dujo Posted March 5, 2013 Share Posted March 5, 2013 Had the issue just a little bit between 25,000 and 50,000 miles but it hasn't happened to me in a few years. Generally when going uphill on the highway. Made no effort to remedy it because it was inconsistent. May have been inadvertently solved at my 60,000 major service interval without my knowledge. Car was totally stock during the time of the issue. Not much help on solving, but it's definitely not your imagination. The cruise control really does just switch off. I wonder if this is limited to 5 speed wagons. Wouldn't that be odd. Link to comment Share on other sites More sharing options...
Evan Posted March 5, 2013 Share Posted March 5, 2013 Okay, thanks for responding. There appears to be a lot of threads on it, I'll have to keep digging and try the washer fix. Link to comment Share on other sites More sharing options...
Dujo Posted March 5, 2013 Share Posted March 5, 2013 Something to do with the neutral switch does make a lot of logical sense. Sensor thinks the car has been put in neutral when it actually hasn't. Link to comment Share on other sites More sharing options...
Max Capacity Posted March 6, 2013 Share Posted March 6, 2013 Yes, this seems to be in just the 5mt's I seem to recall one 5eat years back but I think that was a TCU issue. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
robinlsb Posted March 6, 2013 Share Posted March 6, 2013 You may need to thin the washer on the neutral safety switch. It's the upper switch on the side of the tranny. That fixed mine when it would drop out of CC going down hill. I had to grind it thinner twice. Since then it works all the time for years The above is the only fix that works. "Belief does not make truth. Evidence makes truth. And belief does not make evidence." Link to comment Share on other sites More sharing options...
dride24 Posted May 22, 2017 Share Posted May 22, 2017 I have the cruise control issue. '05 LGT MT. I have been to the dealer a year ago. They reflashed ECM. Bit better but still bad in usual ways. I want to try the grinding of the neutral safety switch "washer". What is it made of? The factory manual describes it as a gasket and in a picture I found it is black like rubber. Thanks. Link to comment Share on other sites More sharing options...
Max Capacity Posted May 22, 2017 Share Posted May 22, 2017 Its a metal crush type washer. It looks like it has two ends when you look at the side of it. Just grind it down to about half the thickness. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
Holla Posted May 22, 2017 Share Posted May 22, 2017 Check the resistance of the switch while you're down there, my switch actually went bad. If I recall, the old switch was about 500ohm and a new one is closer to 5ohm when it's closed. Link to comment Share on other sites More sharing options...
WahooNo2 Posted May 26, 2017 Share Posted May 26, 2017 I noticed that mine does this when its really cold out down hills... i thought it was an annoying safety feature so people were not dying in the winter. Like if you think of what the engine is seeing its quickly seeing load to no load which could be you slipping on ice. Link to comment Share on other sites More sharing options...
dride24 Posted May 26, 2017 Share Posted May 26, 2017 The mystery deepens. I took it back to the dealer to try and get to the bottom of the cruise control issue. On the way to the dealer, I more accurately diagnosed the symptoms. The cruise would hold 60mph, 70 but no higher. Looking at the car, the dealer thought that the RR wheel bearing was bad and couldn't troubleshoot the cruise control further until that was replaced. I had had the RR WB replaced 24k ago. I went back to the shop that had done that but even though it was over a year and under new owners they helped me out by testing the RR WB (they didn't think it bad) and then driving the car hooked up to their testing computer. The mechanic found a CO108 code. ABS sensor LH front bad signal. He cleared that and the cruise control worked at all speeds. It went back the original malfunction the next day, but at least I know where the problem is and the dealer agreed to go deeper in the diagnosis without changing the bad (?) wheel bearing. Thanks for your help. Link to comment Share on other sites More sharing options...
Max Capacity Posted May 26, 2017 Share Posted May 26, 2017 So your going to replace the left front ABS sensor ? That should fix your problem. I hope you've learned lesson here...use that local repair shop more often. Just noticed your from Vail...lucky you, I assume you ski ? 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
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