kahmann Posted June 5, 2009 Report Share Posted June 5, 2009 My brother's GT500 just shut down for the 2nd time in a week due to 'Fail Safe Mode'. WTH is this? He's running a ton of mods and a custom tune, but it's run fine for months on the tune he has. The only thing that he mentioned was that his JLT carbon fiber intake had caved in at the throttle body about 1/2 inch and was just replaced yesterday with a new one. So basically, his engine was drawing in some unfiltered air for a bit. The confusing part to me is why would it go to "Fail Safe Mode" before AND after this problem? Thanks for any help. Ken Link to comment Share on other sites More sharing options...
COBRA SCOTTY Posted June 5, 2009 Report Share Posted June 5, 2009 IT HAS BEEN REPORTED BY OTHER TS MEMBERS THAT THEIR JLT INTAKE TUBE HAS EITHER COME LOOSE OR HAS BEEN CRACK WHERE IT CONNECTS TO THE THROTTLEBODY THIS CAN CHANGE INLET FLOW , TEMPERATURE AND CAUSE THE CAR TO GO INTO FAIL SAFE MODE. IT MIGHT BE WISE TO DOUBLE CHECK THE INLET TUBE TO MAKE SURE IT IS ATTACHED PROPERLY. ADDITIONALLY, IT MIGHT BE REQUIRED THAT YOU CLEAR ANY CODES FROM THE ECM. I WOULD TALK WITH THE GUYS FROM JLT OR WHOMEVER DID YOUR BROTHERS TUNE FOR ADDITIONAL SUPPORT. JUST MY $.02 SCOTTY Link to comment Share on other sites More sharing options...
blkGT500nCA Posted June 5, 2009 Report Share Posted June 5, 2009 Does he have any cooling mods? I know it'll pull timing if it gets hot but I didn't think it would go into Failsafe. Link to comment Share on other sites More sharing options...
skyhighsd Posted June 5, 2009 Report Share Posted June 5, 2009 Most of the time it is from unmetered air so check that intake again all of it Link to comment Share on other sites More sharing options...
sprint200 Posted June 5, 2009 Report Share Posted June 5, 2009 Does he have any cooling mods? I know it'll pull timing if it gets hot but I didn't think it would go into Failsafe. It will enter Failsafe mode if either the water or oil temps get too high. I've done it twice while on track with ambient temps in the upper 90's. I've learned to short shift to manage the engine temps in summer conditions. maybe someday I'll buy one of Van's puller fan H/E's, but I had just installed the AFCO when he announced his piece If the airflow isn't the problem, then it may be temperature............ Link to comment Share on other sites More sharing options...
MY500SS Posted June 5, 2009 Report Share Posted June 5, 2009 It will enter Failsafe mode if either the water or oil temps get too high. I've done it twice while on track with ambient temps in the upper 90's. I've learned to short shift to manage the engine temps in summer conditions. maybe someday I'll buy one of Van's puller fan H/E's, but I had just installed the AFCO when he announced his piece If the airflow isn't the problem, then it may be temperature............ +1 Mine went into "Fail Safe" at a HOT California Speedway once. Link to comment Share on other sites More sharing options...
flyinghigh217 Posted June 5, 2009 Report Share Posted June 5, 2009 Hmmm, mine went into 'Fail Safe Mode' during a 90 minute traffic jam in FL, outside temp about 90. After i got out of the traffic jam with an engine restart it did fine. It has done it once while in cruise on the interstate ambient about 70. And once when the hose clamp holding the air filter on came loose and it was sucking some unfiltered air (luckily i fixed that problem quickly). No problems the last 2000 miles driven. Link to comment Share on other sites More sharing options...
kahmann Posted June 5, 2009 Author Report Share Posted June 5, 2009 Thanks a lot for the help guys. He's got at it at a shop in Simi today. He checked the intake last night and said it was snug all around. Both times it's happened, he's able to kill the key, keep it rolling, fire it back up, and everything goes back to normal. I'll try to get an update later today. Ken Link to comment Share on other sites More sharing options...
MY500SS Posted June 5, 2009 Report Share Posted June 5, 2009 Thanks a lot for the help guys. He's got at it at a shop in Simi today. He checked the intake last night and said it was snug all around.Both times it's happened, he's able to kill the key, keep it rolling, fire it back up, and everything goes back to normal. I'll try to get an update later today. Ken Hey Ken, What shop does your brother use in Simi? Thanks, Dan Link to comment Share on other sites More sharing options...
kahmann Posted June 5, 2009 Author Report Share Posted June 5, 2009 Hey Ken, What shop does your brother use in Simi? Thanks, Dan My bad, he brought it to B&D Racing in Van Nuys today. He said they fixed it up in 10 minutes. I thought he was using a shop in Simi this whole time, but I guess it was B&D that did the Griggs install and just about everything else he's had done. Ken Link to comment Share on other sites More sharing options...
phildeez010 Posted June 6, 2009 Report Share Posted June 6, 2009 Band D racing are great. They work on my car all the time. Not to change the subject but do any of you go to the test and tune days at California speed way? Link to comment Share on other sites More sharing options...
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