What have I done :-(
Discussion
After changing the ecu battery my t350 won't start, fuel pump primes, car turns over but that's it same with old battery in to. Is there any one near Hull that has ecu diagnostic cable I can borrow as I'm totally stuck. Spoke to dom at power and thinks the adaptive need resetting. Any other suggestion would be greatly appreciated.
Many thanks
Many thanks
Check your relays and fuses (use the list in the hand book for the relevent ones). fuse board may have been knocked whilst down in the footwell.
If it primes and turns over then it should fire/start unless there is no spark? can you smell petrol? is it flooded?
Try disconnecting the battery it might decide to work again you might be supprised what dropping the power away can do.
Shep
If it primes and turns over then it should fire/start unless there is no spark? can you smell petrol? is it flooded?
Try disconnecting the battery it might decide to work again you might be supprised what dropping the power away can do.
Shep
Edited by shep1001 on Friday 17th June 22:55
Fusion1 said:
Hi shep that's the same as what dom told me. Could I have blown a fuse or relay disconnecting the ecu, left the car for about 3 hours and tried it again and still the same everything else seems ok power wise. Do you know which fuse/relay I should look at. Thanks again
No I am out and don't have access to my info, will look for the morning for youShep
Try 2nd fuse down from the top of the fuse board (where the rows of fuses meet) #17 20A for the ignition coils. Also have a look at the 5th fuse down #20 7.5A dash & EFI ecu units. Fuse #12 is the 20A ignition switch 4th along the top row of fuses would be worth a look whilst you are down there.
Might also be worth checking the connections on the EFI ECU to make sure the cables have not come loose (assuming this is located in the area you have been working).
Fuel cut off switch is a good shout too, under the dash in the PS footwell, has a push button re-set on the top of it.
Shep
Put the old battery back in and still the same. I have read that the battery won't activate until service is reset in the software, does this sound correct? So just ordered a lead and will try that out. Will double check the fuses again tomorrow and the other bits. You don't think I could have damaged the ecu? Thanks for all the replys guys :-)
Fusion1 said:
Put the old battery back in and still the same. I have read that the battery won't activate until service is reset in the software, does this sound correct? So just ordered a lead and will try that out. Will double check the fuses again tomorrow and the other bits. You don't think I could have damaged the ecu? Thanks for all the replys guys :-)
Might be but seems an odd thing to have to do. The dash ECU is not the main ECU so if you damaged it I would expect it to be the dash that failed to function not the car. My money is on not enough spark or not enough arab juice. The devil is in the detail as to which and why. Don't forget to check and push the reset on the fuel cut off switch. Have you tried it without the dash ECU connected?
It was the battery ram in the main ecu I changed it says on racing green website: Memory chip for TVR MBE engine management ECUs. This is the memory chip for all the MBE engine management ECUs as fitted to many TVRs. There are 2 replaceable chips within these ECUs, one is the ROM with the tuning program and this one, the memory chip. This non volatile SRAM carries the "service tune" settings and other variable information and this information is maintained by the internal battery within this memory chip. This battery can and does fail eventually and causes this stored information to be lost which can cause many varying symptoms with the management and running of the engine. Replacing this chip and resetting the "service" tuning parameters restores the basic settings and brings the chip into operation.
What do you think
What do you think
Can any one confirm the above can be reset in the software, also doom said I could have blown a censor re connecting the ecu, which engine censor would stop the car running if monitored by the main ecu? Don't fancy buying anew ecu anyone know who can repair these now as well as the dash ecu as milage need putting back which is where this all started.
Fusion1 said:
Can any one confirm the above can be reset in the software, also doom said I could have blown a censor re connecting the ecu, which engine censor would stop the car running if monitored by the main ecu? Don't fancy buying anew ecu anyone know who can repair these now as well as the dash ecu as milage need putting back which is where this all started.
It sounds plausible, slightly different to what you first said, its not so much activating the battery but performing a reset/reboot of the ECU. If it needs repair I believe this can be don through Dom or you can go direct to the likes of Paul Smith or Cath Mason who repair the electronics for TVR.Electrics can be temperamental things, its possible you damaged it, less likely I guess if you disconnected the battery to the car first and took precautions against static damage.
I wonder if it’s a software issue and having had it disconnected it has corrupted or lost the data on the memory chip?
Update tried to connect to the ecu and it's not having it just won't connect, all settings are right port etc 2 laptops and an old pc so it's going to selby tvr. Its like the ecu is is not getting power. Wife is giving me the Evil eye lol and don't suppose my customer protect warranty gold will do much good :-(
Thanks for all your help though
Thanks for all your help though
Fusion1 said:
Forgot to ask. Where is the fuel cut of switch in passenger footwell - sorry
Your immobiliser needs to be deactivated first (so the fuel pump primes) then click ‘re-connect to the ECU’ took me a while to work this out, not sure if you were aware.Fuel cut off switch is up under the dash closer to the radio side.
Shep
Gassing Station | Tamora, T350 & Sagaris | Top of Page | What's New | My Stuff