Well i wired my dx to mpfi for my z6 and whne i try and start it, all it dose is make a really fast clicking noise coming from main relay area when the car is turn on, the when i try and turn over it sounds like the starter pops out but dosent spin, just a click, click. it not the battery because i put a jumper on it and tryed again. If anyone can give some info i would realy apreciate it.

 

ttt

 

check and make sure you ahve a ground cable between the body and the transmission. sounds like a ground problem.

 

ECU input signal is interrupted.

 

Definately a grounding problem. Check your grounds to the:

- Thermostat (often missed)

- Starter

- Valve Cover

- From battery to tranny casing

I think that's all of the grounds in the engine bay, which is most likely where the problem is.

dave

 

I'm not positive but might the Si have had a different Main Relay?

 

Thanks for the help, im on the right track so far. Their was a wire in the back coming from the wire harness that had one of those circle connector clamps so that you can hook it through a bolt , well im thinking that it grounds on the starter, but i just grounded it . dose that wire have to be grounded on the starter or anywhere? The main relay clicking stoped, but wen i try to turn it over all i get from the starter is a click also. Thanks again for any help!

 

One important ground connection is at the thermostat housing. Otherwise, overall, your description sounds like a weak battery, too.

 

please elaborateon the ecu input signal. fro some reason i think this is it b/c when it clicks the tach bounces real fast.
i have this same problem except it happens when the car is running and under load(%50+ throttle)

also i thought the starter only had the starter signal and 12v. regardless i dont have either of the two starter grounds.

 

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yo