Car in Limp mode... No CEL - Page 5 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

naikaidriver · 03-14-2013, 05:01 PM

I think I may have to wipe the dust off of my multimeter and do some ohm measurements as well. I know that the LEDs have SIGNIFICANTLY less resistance than incandescent bulbs. Now I'm curious by just how much.

Scott

naikaidriver · 03-18-2013, 12:37 PM

Well everyone, here is my report...

I changed my switchbacks back to stock and my DRLs. Since apparently I didn't keep my reverse light stock bulbs I simply disconnected them. No change.

So I started talking through it with my wife and she noticed that my problems really started around the time I got gas from Sam's Club last week. Interesting she would recall that little detail but got me thinking.

Since I still had a little less than a half tank of that gas, I drove down to Autozone, picked up the STP octane booster and went to my usual Shell gas station. I put in the booster, topped it off with 93 and took it for a 75 mile drive.

Summary, the car is running noticeably better but will occasionally seem to lose power especially at around 1/3 throttle. I have noticed that my short term and long term fuel trims are all over the place while looking at them in real time. So far the only theories that fit are malfunctioning fuel pump, or bad gas that may have clogged a fuel filter. Still, like I said, the car is overall running better.

As soon as the weather improves, I will burn through the remainder of the tank on the highway and see how it goes. My hunch is telling me that it will be much better by the time this tank is empty and I refill it.

Scott

Toyota GT 86 · 08-15-2014, 03:23 PM

Hello guys.... i have the same problem in my GT86. I've read all what u wrote but i don't get what is the problem... i'm running Toms tailights (almost one year ago and the issue came 1 week ago), also installed the rear fog light. Nothing more back there please can you help me in what should I do or change. @Sportsguy83 @naikaidriver @F n' A Automotive

Sportsguy83 · 08-15-2014, 03:43 PM

Quote:

Originally Posted by Toyota GT 86

Hello guys.... i have the same problem in my GT86. I've read all what u wrote but i don't get what is the problem... i'm running Toms tailights (almost one year ago and the issue came 1 week ago), also installed the rear fog light. Nothing more back there please can you help me in what should I do or change. @Sportsguy83 @naikaidriver @F n' A Automotive

@marcoaferrer diodes?

shaynek · 08-20-2014, 03:35 AM

so today i finally figured out what causes this on my car at least. i noticed that if i jiggle the brake pedal with my hand my brake lights come on but are very dim. this is why the car goes into limp mode. what i did was i twisted the brake switch under the steering wheel column counter clockwise and pushed it in all the way. there is a tsp for the brake switch assembly. hope this solves everyones problem.
https://www.fareastautopart.com/2014...yota86frs-brz/

03-14-2013, 05:01 PM	#57
naikaidriver Senior Member Join Date: Aug 2012 Drives: 2013 Scion FR-S AT Asphalt Location: Lynnwood, WA Posts: 770 Thanks: 145 Thanked 673 Times in 289 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	I think I may have to wipe the dust off of my multimeter and do some ohm measurements as well. I know that the LEDs have SIGNIFICANTLY less resistance than incandescent bulbs. Now I'm curious by just how much. Scott __________________

03-18-2013, 12:37 PM	#58
naikaidriver Senior Member Join Date: Aug 2012 Drives: 2013 Scion FR-S AT Asphalt Location: Lynnwood, WA Posts: 770 Thanks: 145 Thanked 673 Times in 289 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	Well everyone, here is my report... I changed my switchbacks back to stock and my DRLs. Since apparently I didn't keep my reverse light stock bulbs I simply disconnected them. No change. So I started talking through it with my wife and she noticed that my problems really started around the time I got gas from Sam's Club last week. Interesting she would recall that little detail but got me thinking. Since I still had a little less than a half tank of that gas, I drove down to Autozone, picked up the STP octane booster and went to my usual Shell gas station. I put in the booster, topped it off with 93 and took it for a 75 mile drive. Summary, the car is running noticeably better but will occasionally seem to lose power especially at around 1/3 throttle. I have noticed that my short term and long term fuel trims are all over the place while looking at them in real time. So far the only theories that fit are malfunctioning fuel pump, or bad gas that may have clogged a fuel filter. Still, like I said, the car is overall running better. As soon as the weather improves, I will burn through the remainder of the tank on the highway and see how it goes. My hunch is telling me that it will be much better by the time this tank is empty and I refill it. Scott __________________

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08-15-2014, 03:23 PM	#59
Toyota GT 86 Member Join Date: Jan 2013 Drives: Toyota GT 86 Location: Peru Posts: 77 Thanks: 104 Thanked 5 Times in 5 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Hello guys.... i have the same problem in my GT86. I've read all what u wrote but i don't get what is the problem... i'm running Toms tailights (almost one year ago and the issue came 1 week ago), also installed the rear fog light. Nothing more back there please can you help me in what should I do or change. @Sportsguy83 @naikaidriver @F n' A Automotive

08-20-2014, 03:35 AM	#61
shaynek Senior Member Join Date: Oct 2013 Drives: BRZ Limited; GR86 Location: Nor cal Posts: 316 Thanks: 93 Thanked 81 Times in 59 Posts Mentioned: 10 Post(s) Tagged: 1 Thread(s)	so today i finally figured out what causes this on my car at least. i noticed that if i jiggle the brake pedal with my hand my brake lights come on but are very dim. this is why the car goes into limp mode. what i did was i twisted the brake switch under the steering wheel column counter clockwise and pushed it in all the way. there is a tsp for the brake switch assembly. hope this solves everyones problem. https://www.fareastautopart.com/2014...yota86frs-brz/

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