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View Full Version : does this sound like a earthing problem?



Shaun92
03-11-2011, 12:21 PM
ive got no rpm, my fuel gauge does not work and my isc has no power to it? or is it just a shit load of problems at onec?

magna buff
03-11-2011, 04:13 PM
rpm is from the dissy
isc and tps is from ignition on

fuel guage might be that diode at the back of the dash
or wire contacts at the sender under the back of the car(sedan)

Shaun92
03-11-2011, 05:25 PM
had a bit of a look and moved the harness around and the thermo fans kicked in :S so defentaly wireing, but this is in the car that ive put the efi from a tr in so ill have to nutt it out.

Shaun92
03-11-2011, 05:37 PM
with the fule gagues is there any differents between ones off an anolog dash and a digital?

magna buff
03-11-2011, 05:43 PM
post up if you start blowing fuses
under the bonnet

the interior ones should be ok

old magna
05-11-2011, 08:56 AM
yes lots of difference. the senders and gauges are totally different. but considering 2 of the 3 problems are coming from the ECU ide look at the feeds and earthing on it. if not then might be a cse of trying another ecu because the rpm gauge and isc are both controlled by it.
you also may have missed out on an earthing strap. do you have the thick one on the throttle body?

Shaun92
06-11-2011, 06:40 PM
yer all the earths are fine, got the error coads and went through and checked all of them and all the tests end up saying replace ecu, but in saying that the rpm signle does not come from the ecu directley so it coulb the harness, but all the contivity checks prove its not. so im in 2 minds cheap aftermarked or ome, have u heard of the Megasquirt ecus?