Steg33 Posted November 12, 2004 Share Posted November 12, 2004 My tacho has decided to play around (flickering) and then die on me. Funny thing is, once in a while on a hot day it works again. I've had the instrument cluster out and the wires seem to be fine between there and the ECU. I'm thinking it's the sender for the taco but not real sure where it is? can anyone tell me where this is or any other ideas what this problem could be? It's on an R33 GTS-T and starting to sh1t me because i don't want to be bouncing it off the rev limiter just to find out when my revs are up. I did a quick search and this dude had the same problem but to no avail: http://www.skylinesaustralia.com/forums/sh...&highlight=taco Any help would be appreciated guys. Thanks Link to comment https://www.sau.com.au/forums/topic/55682-wheres-the-taco-sender/ Share on other sites More sharing options...
Mr GTS4 Posted November 12, 2004 Share Posted November 12, 2004 same thing on my car... i got nothing. Link to comment https://www.sau.com.au/forums/topic/55682-wheres-the-taco-sender/#findComment-1084529 Share on other sites More sharing options...
red900ss Posted November 12, 2004 Share Posted November 12, 2004 I supersized my taco to a burrito and hotted it up with some jalapenos Link to comment https://www.sau.com.au/forums/topic/55682-wheres-the-taco-sender/#findComment-1084535 Share on other sites More sharing options...
nmcmahon83 Posted November 12, 2004 Share Posted November 12, 2004 lol, damn u beat me to it! Link to comment https://www.sau.com.au/forums/topic/55682-wheres-the-taco-sender/#findComment-1084551 Share on other sites More sharing options...
Guilt-Toy Posted November 12, 2004 Share Posted November 12, 2004 I have this problem tooo!!! My tacho likes to sit at 8000rpm even at idle!! every now and then it will change to another setting like 3000rpm or 1200rpm... Sometimes you can catch it moving slowly others it goes instantly fast... Link to comment https://www.sau.com.au/forums/topic/55682-wheres-the-taco-sender/#findComment-1084587 Share on other sites More sharing options...
Steg33 Posted November 12, 2004 Author Share Posted November 12, 2004 Fixed the taco now the problem with the tacho. A few others with the same problem but has anyone ever fixed it or worked out the cause? Still looking for where the sender is too. Link to comment https://www.sau.com.au/forums/topic/55682-wheres-the-taco-sender/#findComment-1084617 Share on other sites More sharing options...
fane Posted November 12, 2004 Share Posted November 12, 2004 Mate had same problem he fixed it with a new cluster 2nd hand from the forums.... must be something wrong with the cluster itself....its not wire related i dont think...or the sender.... Link to comment https://www.sau.com.au/forums/topic/55682-wheres-the-taco-sender/#findComment-1084628 Share on other sites More sharing options...
browny Posted November 12, 2004 Share Posted November 12, 2004 The "sender" actually a pin on the ECU. Link to comment https://www.sau.com.au/forums/topic/55682-wheres-the-taco-sender/#findComment-1084823 Share on other sites More sharing options...
predator Posted November 12, 2004 Share Posted November 12, 2004 yeah.. indeed it is.. but where is the ECU getting that reading? Its obviously somewhere off the engine loom. That is the important question.. Link to comment https://www.sau.com.au/forums/topic/55682-wheres-the-taco-sender/#findComment-1084881 Share on other sites More sharing options...
Steg33 Posted November 12, 2004 Author Share Posted November 12, 2004 The rest of the car runs fine so i guess it should only be a problem with the cluster because if the 'sender' from the motor was screwed then the ECU would have troubles aswell wouldn't it? should be able to get hold of a hand controller fairly soon for the power FC and narrow it down to the cluster if i get a correct reading from the ECU. Link to comment https://www.sau.com.au/forums/topic/55682-wheres-the-taco-sender/#findComment-1085076 Share on other sites More sharing options...
blind_elk Posted November 12, 2004 Share Posted November 12, 2004 yeah.. indeed it is.. but where is the ECU getting that reading? Its obviously somewhere off the engine loom. That is the important question.. The ECU is controlling the coilpacks, and it knows how many times it is telling the coils to fire in any given period of time.It's pin 7 on the ECU. Link to comment https://www.sau.com.au/forums/topic/55682-wheres-the-taco-sender/#findComment-1085130 Share on other sites More sharing options...
Steg33 Posted November 13, 2004 Author Share Posted November 13, 2004 The ECU is controlling the coilpacks, and it knows how many times it is telling the coils to fire in any given period of time.It's pin 7 on the ECU. That's more what i was looking for. Thanks heaps buddy. Link to comment https://www.sau.com.au/forums/topic/55682-wheres-the-taco-sender/#findComment-1085358 Share on other sites More sharing options...
Revhead Posted November 13, 2004 Share Posted November 13, 2004 I had exactly the same problem. The tacho output was fried on the stock ECU, which apparently is not that uncommon on the R33. I replaced the ECU and the tacho instantly worked again. I may be wrong, but I think the ECU works out engine RPM based on the CAS. From there, the ECU fires coils/injectors, and runs the tacho. Link to comment https://www.sau.com.au/forums/topic/55682-wheres-the-taco-sender/#findComment-1085375 Share on other sites More sharing options...
strutto Posted November 13, 2004 Share Posted November 13, 2004 I may be wrong, but I think the ECU works out engine RPM based on the CAS. Nope not wrong... That's spot on... Link to comment https://www.sau.com.au/forums/topic/55682-wheres-the-taco-sender/#findComment-1085380 Share on other sites More sharing options...
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