Mariak New Member 6 Member For: 4y 11m 9d Posted 20/12/19 07:58 AM Share Posted 20/12/19 07:58 AM Hi guys, have an ongoing problem with my stock xr6t which is driving everyone crazy and I'm about to stop it for parts!!!. Long story short, car starts and drives perfectly every morning but as soon as it gets hot the engine light will come on at startup, it will run as rough as guts and have no response from the accelerator. Turning it off then on again a few times has worked, runs fine once started. Parts replaced in the last 9 months: Ecu (trans limp mode problem) Radiator Pvc valve O2 sensor Crank angle sensor Cam angle sensor New (genuine coils) and plugs Cylinder head temp sensor Cvt phasers cleaned out and new rocker cover gasket New fuel pump and filter. Throttle body (2nd hand) Wiring behind the engine block has been replaced. Wiring from ecu to engine replaced the other day as workshop believed it had a high resistance connection problem. This did not fix the issue. It now happens even when it hasn't been driven but when weather is hot (I'm in SA) Current codes showing from workshop scan have shown these codes: P1270-63, P2100-65 - Throttle actuator control module and U1900-63 - can bus communication fault. If anyone could help out it would be friggin awesome, cheers. Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 28,276 Member For: 16y 6d Gender: Male Location: Melbourne Posted 20/12/19 02:33 PM Share Posted 20/12/19 02:33 PM that's going to be really hard to figure out if you've replaced all of that and haven't fixed it or even changed the symptoms... sounds sorta like it's been tuned and when it's in the "hot" settings it's got a bad tune in it that causes it to go into limp-home-mode. since you're in SA, you're best off pinging @JETURBO and getting him to have a look at it. Link to comment Share on other sites More sharing options...
Mariak New Member 6 Member For: 4y 11m 9d Posted 22/12/19 09:45 AM Author Share Posted 22/12/19 09:45 AM It hasn't been tuned since ECU was replaced, everything stock ☹. Link to comment Share on other sites More sharing options...
gaz097 Bronze Donating Members 1,751 Member For: 12y 8m 26d Posted 22/12/19 10:09 AM Share Posted 22/12/19 10:09 AM A had a early ba do weird sh*t when it would get hot. Tip a bucket of cold water over the ECU Link to comment Share on other sites More sharing options...
Mariak New Member 6 Member For: 4y 11m 9d Posted 28/12/19 04:43 AM Author Share Posted 28/12/19 04:43 AM Did an experiment, put it out in the sun yesterday. Left it there today (40 degrees), tried to start and friggin engine light on straight away (without it being driven). Poured cold water over ecu and started straight away with no engine light!! So would this now be an ecu issue or maybe map sensor? Link to comment Share on other sites More sharing options...
gaz097 Bronze Donating Members 1,751 Member For: 12y 8m 26d Posted 28/12/19 01:21 PM Share Posted 28/12/19 01:21 PM Sounds like a ecu. Test it the other way with a kettle. What is the number on the side of your ecu. Should look something like this but up the right way I sent the ecu to injectronics and they tested it in a oven, and vibration machine 1 Link to comment Share on other sites More sharing options...
Mariak New Member 6 Member For: 4y 11m 9d Posted 28/12/19 11:18 PM Author Share Posted 28/12/19 11:18 PM (edited) When the car starts it runs fine, no missing, stalling etc... it's just getting the bitch to start when it's hot (engine or direct sun). This is the replacement ecu numbers, I'm going to call injectronics tomorrow to have a chat with them. How long did it take for you to get your ecu back?? Cheers. Edited 28/12/19 11:19 PM by Mariak Link to comment Share on other sites More sharing options...
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