Weired starting problem, just cranks when warm, starts after reflash
#1
Weired starting problem, just cranks when warm, starts after reflash
So I'm having a new starting issue that just popped up. I have recently done some mods to the car but the issue did not arise until I started tuning and then I haven't really changed anything that would affect the starting I would think.
Anyway here are the symptoms.
Car starts fine when cold, I think, I'm testing this now, but after driving around if I shut it off. often times it will not restart and will just crank. However if I reflash the ecu and change something on the map (example disable or enable the immobilizer periphery bit FAA bit 3) it will fire right up. It has nothing to do with the periphery bit because the next time the car is turned off I have the same problem and have to change the bit back. I figured the immob bit was a good example because it should have nothing to do with starting the car really. Yes I know what it does but my immobilizer is properly setup so the car starts with the bit set at 0 or 1.
Also if I shut the car off and then try to start it immediately it will start right up, the car has to sit for about 60 seconds before it will fail to start.
Currently I am using the Tephramod v7 recompile map with mods and maf 88590715, I have tried flashing to the tephramod v7 base map with no changes made to it and have the same problem. When I flash back to the stock map the car will turn over and fire but dies as soon as I let off the key.
I'm letting the car sit right now to see if the problem persists. Currently it is just cranking so I will see what happens after an hour or so.
Valet mode is not turned on, and also while in this state evoscan cannot connect to the car. Ecuflash has no issues connecting and reflashing and the car will start right afterwards. Also if I just flash it having made no changes to the rom the car will still not start.
Any ideas what could be wrong? or where to start looking? Please let me know if I can provide any more information.
Anyway here are the symptoms.
Car starts fine when cold, I think, I'm testing this now, but after driving around if I shut it off. often times it will not restart and will just crank. However if I reflash the ecu and change something on the map (example disable or enable the immobilizer periphery bit FAA bit 3) it will fire right up. It has nothing to do with the periphery bit because the next time the car is turned off I have the same problem and have to change the bit back. I figured the immob bit was a good example because it should have nothing to do with starting the car really. Yes I know what it does but my immobilizer is properly setup so the car starts with the bit set at 0 or 1.
Also if I shut the car off and then try to start it immediately it will start right up, the car has to sit for about 60 seconds before it will fail to start.
Currently I am using the Tephramod v7 recompile map with mods and maf 88590715, I have tried flashing to the tephramod v7 base map with no changes made to it and have the same problem. When I flash back to the stock map the car will turn over and fire but dies as soon as I let off the key.
I'm letting the car sit right now to see if the problem persists. Currently it is just cranking so I will see what happens after an hour or so.
Valet mode is not turned on, and also while in this state evoscan cannot connect to the car. Ecuflash has no issues connecting and reflashing and the car will start right afterwards. Also if I just flash it having made no changes to the rom the car will still not start.
Any ideas what could be wrong? or where to start looking? Please let me know if I can provide any more information.
Last edited by akeric; Jul 2, 2011 at 03:49 PM.
Trending Topics
Thread
Thread Starter
Forum
Replies
Last Post
scheides
ECU Flash
357
Oct 22, 2021 08:59 AM
Bewstzalot
General Engine Management / Tuning Forum
4
Jul 7, 2017 01:35 PM