Bruce Nunnally Posted February 14, 2020 Report Share Posted February 14, 2020 On the way to Zoomba today Ann's ATS Premium 2L showed Stabilitrak error, check engine, speed limited to 40 mph, and ran rough. She finished exercise, then took an Uber home. When I was available we went back; the ATS would not start, it just cranked over repeatedly. I called Crest and we discussed which tow service to use. I tried it one more time, and it started, so I crept toward Crest at 40mph. Along the way, along the highway, it died in an odd way -- the engine stopped but it was as if the car "didn't realize" the engine was dead. I rolled into an undeveloped exit along the highway, and Ann caught up in the ATS-V. After consulting with the dealer and waiting a while, the ATS restarted. I got to the very last hill before the dealership, and the engine died again. Luckily I had enough momentum to get up the hill, into the exit, and roll all the way down and into the service bay at Crest, all with the engine dead. It was an epic glide. We got an XT5 as a loaner, and Crest will need some time to diagnose and let us know what the story is. Quote Bruce 2023 Cadillac CT4-V Blackwing Follow me on: Twitter Instagram Youtube Link to comment Share on other sites More sharing options...
Bruce Nunnally Posted February 17, 2020 Author Report Share Posted February 17, 2020 High pressure fuel pump, replace lines to fuel pump (not reusable), sensor, hose $2190 fuel service (cleaning) $439 oil change So good that it is not an engine but pricey Quote Bruce 2023 Cadillac CT4-V Blackwing Follow me on: Twitter Instagram Youtube Link to comment Share on other sites More sharing options...
BodybyFisher Posted February 17, 2020 Report Share Posted February 17, 2020 WOW. Is it 5 model years old?, how many miles? Out of warranty? That is a big number, for a car coming off warranty. Quote Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
Bruce Nunnally Posted February 17, 2020 Author Report Share Posted February 17, 2020 This is the 2013 ATS 2L so no warranty. My guess is this is a side effect of direct injection. Quote Bruce 2023 Cadillac CT4-V Blackwing Follow me on: Twitter Instagram Youtube Link to comment Share on other sites More sharing options...
BodybyFisher Posted February 17, 2020 Report Share Posted February 17, 2020 Opps, I saw 2016 on your profile, I forgot you had 2. I guess it sounds expensive, but it was the dealer who did the work, and while they tend to be expensive, at least they know the car well, have done it before, pay attention to bulletins, and have the experience to fix it given the new DI high pressure design. Plus it sounds like they might have done the intake valve clean up. Does it run better than it did? Quote Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
Bruce Nunnally Posted February 17, 2020 Author Report Share Posted February 17, 2020 just into the shop today. My wife was already shopping newer cars so although pricey this repair is certainly less out of pocket than a lighly used XT4 Premium Luxury. She only has 25k miles or something on it so hopefully not a trend we see in high pressure fuel pump failures. Quote Bruce 2023 Cadillac CT4-V Blackwing Follow me on: Twitter Instagram Youtube Link to comment Share on other sites More sharing options...
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