Went to get my car tuned the other day, said it can't be tuned due to the the voltage being at 15. Most evos are running around 14ish, is that little extra really that big of deal?

 

bump

 

Yeah, thats overcharging.

Hard to dial it in with voltage that fluctuates that much.

Eventually your alt would give out, and when you change it the tune would be off.

 

What would be the solution for the op? To hard wire right ?

 

try a new alternator

 

Did that, still over charging. Any other suggestions?

 

yea apparently its been like this for roughly 2 and a half years, because ive had the battery break light on for about that long. Ive been tuned before with it on, but this is a different person im dealing with now, first person to actually bring this to my attention.

 

What points were used to see 15 volts? IE: Did you measure it with both leeds on the battery terminals?

 

yes right on the battery terminal.. i did it for him

 

Is it a OEM or Denso rebuilt alt?
I have heard of parts store rebuilds overcharging.
I just created a thread last week when mine finally crapped out at 307,000.

I went OEM mitsu due to reliability.

To me it sounds like a regulator problem or at least a wiring prob. I'll look at the schematics and see what voltage is on what pin at the connector at the back of the alt.

Also, if you guys are in Westchester, your not far from my dealer.

 

thanks for the help... where is your dealership we do live in westchester

 

http://www.wideworldferrarimaserati.com/

Exit 14 off the Thruway across TZ.

You guys should come to the BBQ on my sig...

Also: check:

STEP 7.
• Engine: 2,500 r/min
• Headlight: ON (high beam)
• Voltage between generator "B" terminal and the positive
battery terminal
OK: 0.5 V or less
• Voltage between the negative battery terminal and genera-
tor body
OK: 0.5 V or less
Q: Are the generator output line and ground line in good
condition?
YES : Go to Step 8.
NO : • Check the generator output line.
• Check the generator ground line.

"B" terminal is Post at back of alternator

 

^awesome thanks.. what days do you work so we can bring it by?

 

I work M-F, and next week sat. if anything PM me and we can try and arrange Sat, we are repainting the shop this weekend so we are closed. plus i'm putting an EvoX together at home so a little busy, LOL

 

awesome will do