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Topic Re: AOS failure on Sunday - Very helpful....Thanks so much, Marc! |
Checking in - still my daily driver at 207K miles - shuttering/lunging issue at slow speeds BarryL - 6 years ago |
Could be a number of things Boxsterra - 6 years ago |
What's the history of the car's service? How many miles on the plugs for instance? MarcW - 6 years ago |
AOS failure on Sunday BarryL - 6 years ago |
Re: AOS failure on Sunday MarcW - 6 years ago |
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BarryL
This will be my 4th AOS. Like in your case, my mechanic didn't expect there to be a problem in getting this cleared and back on the road. He said there is a lot of inaccurate hype on the internet that this type of event destroys engines. It came on so fast, without warning and I shut it down pretty soon, but not immediately as I was in on highway 1 coming up the coast and it took me 30 sec to find an place to safely pull over. Funny I was thinking it was about time to replace the AOS, but didn't act preemptively. He will be working on the car today.
BarryL
Back up and running...4th AOS and all! BarryL - 6 years ago |
Re: Back up and running...4th AOS and all! MarcW - 6 years ago |
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BarryL
Oil removed from cylinders, new AOS, sparkplugs and oil/filter. My indy said to expect burn off of oil for awhile, and when I drove home from the shop, particularly on startup, quite a burn off. My indy is going on vacation and didn't have time to check out the low speed shudder issue I was having on this visit. The new spark plug replacement did not fix this. I will be taking it back in a couple weeks to address this and a slight grinding sound that he said he had heard that he needed more time to locate. Nice to have my car back, but will be better when I find out what else is going on.
Re: Back up and running...4th AOS and all! BarryL - 6 years ago |
Re: Back up and running...4th AOS and all! MarcW - 6 years ago |
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BarryL
The tech did not have any thoughts about the shuddering, only that if it were a transmission, it would be around $3500 to get a used one installed. The shuddering is not that bad at this point, more an irritation. I have been waiting for it to get worse before garaging the car. It almost feels like when you are stalling out a car with low rpm's, so if I keep the rpms up, seems to not to be an issue. I ordered some techtron, but my tech advised against using and he just changed out the oil, so I am in a quandry of what to do.... put the techtron in and then have to pour out brand new oil or just wait to have the tech check it out when I get my next appointment with him when he is back from vacation in three weeks. Air filter was just changed out. I will definitely try the E-GAS calibration.
As always Marc, thanks so much.
Tried the E-GAS Calibration BarryL - 6 years ago |
Re: Tried the E-GAS Calibration MarcW - 6 years ago |
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BarryL
After performing the E-GAS Calibration, seemed like the car ran smoother and shuttering was reduced somewhat. It is hard to describe the shuttering/hesitation...but at low speeds accelerating and more noticeably when going up an incline, the hesitation, shuttering seems to fluctulate, but the real shuttering occurs when I go over a roughness in the road or bump while accelerating, Kind of feels like the tires are out of balance, then discontinues as speed is increased. Appt with my indy in two weeks.