REV Counter gone mad!

[bean]

I've been having a few running problem with the car recently since swapping ECU's, the REV counter has now starting flicking madly and doesn't read at all at idle.

What should I check? :?

 

[purplemonster]

try the old ecu back on there ans see if the fault gose ?


maybe a faulty ecu ? or not compatible with ur car ?


ROB

 

[zia]

the rev counter works off the pulses on the coil.probably has different connection on the ecu

zia

 

[bean]

Tried the old ECU, fault still there.

Hmm.... best get the multimeter out. :?

 

[Anonymous]

No the fault lies in the wire running from the gearbox to the tachometer, i had similar problem, i think yours is the same, just check this little black wire. Remember on the R the gearbox sends the revs to the tachometer which then sends this info to the ecu, so i think ecu is a red herring.

 

[bean]

Thanks, I'll try and trace wires but I'm gonna check ECU end first cos it died shortly after I was feckin around with it.

 

[bean]

No the fault lies in the wire running from the gearbox to the tachometer, i had similar problem, i think yours is the same, just check this little black wire. Remember on the R the gearbox sends the revs to the tachometer which then sends this info to the ecu, so i think ecu is a red herring.

Which little black wire do you mean?