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Naimanator September 30th, 2011 18:13

Odd limp mode encounter on road trip.
So, earlier this week I completed a cross country road trip from California to Michigan. While I was on the trip I had something strange happen and I'm wondering if anyone else has experienced the same...

I'm driving on the freeway at night with the cruise set at 80 mph. Out of nowhere, there's semi-tread on the road directly in front of me and I have no time to react before I hit it straight on. It made a hell of a thump under the car so I thought it would be a good idea to give the brakes a good test to make sure everything was still connected. I test the brakes, they work fine, so I try to accelerate back up to 80 but the car won't go any faster than 75. I pull into the next rest area, noticing at a stop sign along the way that the car has absolutely no torque and no turbo whine. I shut the car off, got underneath, looked around, expecting to find a cracked charge pipe or something. Nothing. I start the car back up, the turbo is back, and everything is fine.

The best I can figure is that hitting the semi tread freaked out one of the airbag collision sensors enough to put the car into limp mode but not deploy the airbags....

Anyone ever experienced anything like this before? Any input?

the*rogue September 30th, 2011 18:27

Any CEL?

What's your avatar, some kind of time, distance, shielding thing?

Naimanator September 30th, 2011 18:33

Well, if there was a CEL triggered it was hidden by the constant CEL telling me that I need to replace my GP harness....

I forget what the avatar is; some random photo I grabbed from the Internet at one point in time.

the*rogue September 30th, 2011 18:43

I have not experienced it, could be a somewhat loose connection on either the MAF or MAP sensors. (Both are used by the ECU to calculate whether or not to kick you into limp mode.)

Certainly not limited to these only. If no subsequent limp mode I'd say nothing to worry about. (except winter coming with a GP problem - ;)


harry3 October 1st, 2011 06:36

I wonder if the vacuum hose was knocked off the actuator.

Naimanator October 1st, 2011 11:33


Originally Posted by harry3 (Post 3556193)
I wonder if the vacuum hose was knocked off the actuator.

Nope. If you read my original post, I found nothing knocked off and everything was fine after cycling the ignition.

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