Help diagnose fuel/alternator issue

hasonic

New Member
Established Member
Joined
Aug 14, 2020
Messages
12
Location
miami, fl
Yeah, once I load up the car with the accessories it really comes down hard especially the high speed fan. But i was doing these test with everything off. Just the car idling and the low speed fan cycling on and off. I was seeing 13.5 volts all the way to the fpdm and after that was the boost a pump 18 volts so you have me a bit confused as to the low voltage ref.

I already have another alternator on it's way, gets here tomorrow. Let's see what that does.

Pin3 had the erratic voltage voltage and pin 10 had the solid 18v to the pump
 
Last edited:

MG0h3

Well-Known Member
Established Member
Joined
Jul 23, 2014
Messages
13,685
Location
El Paso, TX
Ah Ok. Thought this was with new Alt in there.

Wish I knew more about FPDM operation but I went return shortly after getting my car.

I read a couple threads but haven’t stumbled onto what kind of voltage you should see leaving the FPDM


Sent from my iPhone using svtperformance.com
 

hasonic

New Member
Established Member
Joined
Aug 14, 2020
Messages
12
Location
miami, fl
Ah Ok. Thought this was with new Alt in there.

Wish I knew more about FPDM operation but I went return shortly after getting my car.

I read a couple threads but haven’t stumbled onto what kind of voltage you should see leaving the FPDM


Sent from my iPhone using svtperformance.com

Lol it is the new alternator lol
My car had a kenneth 3g with the 3.2 pulley and I ordered a new one and it started doing the same thing. So im doingba warranty claim with kenneth just to be on the safe side, in case the one he sent me happened to be a defective one from the manufacture.

Btw anyone out there can tell me what voltage they are getting on pin 3 red/blk wire on the fpdm?
 

MG0h3

Well-Known Member
Established Member
Joined
Jul 23, 2014
Messages
13,685
Location
El Paso, TX
I’d help you out but 1. I’m on blocks for repairs and 2. I’m return.

Get with black306. Hell know. Just not sure how active he is on here anymore


Sent from my iPhone using svtperformance.com
 

hasonic

New Member
Established Member
Joined
Aug 14, 2020
Messages
12
Location
miami, fl
I’d help you out but 1. I’m on blocks for repairs and 2. I’m return.

Get with black306. Hell know. Just not sure how active he is on here anymore


Sent from my iPhone using svtperformance.com

Thanks I sent him a message already, waiting on a response
 

Users who are viewing this thread



Top