Trouble codes 49 and 96. I'm all ears.

FurryWrecker911

SCCoA Member
I've been adding to the off-topic thread on Operation Replace Fuel Injectors for a while, but I feel like this is more technically driven and needs its own thread. I have two trouble codes pulled now from a starts, runs, but runs like molasses in December:
  1. 49: SPOUT signal problem
  2. 96: Fuel Pump secondary circuit fault / high speed fuel pump relay open
49 is generic as all can be, and disconnecting the existing spout connector changes how the car behaves, so it seems like it's a problem elsewhere in the circuit to my untrained eyes. I had someone say "replace the SPOUT jumper with a real jumper" but I don't know what that means. 96 seems like a "replace the relay" problem at face value. I've already replaced the turn signal relay of all things, so that only seems natural that other relays are to fail soon too.

Anyone here have these trouble codes before and have any input on "do this and don't do this" before I get started on tearing bits and pieces out?
 
96 is just the ECM is not receiving the return signal (secondary circuit) that the fuel pump relay has turned on.
Most likely there is northing wrong with relay. It is a circuit fault as stated-not a relay fault. Pin 19 of ECM is not
getting confirmation that fuel pump has been energized. Somewhere between fuel pump relay & ECM there is a break (open circuit)
This fault will not effect how engine runs that I'm aware of.
 
49 is generated when spark output (SPOUT) circuit is open. This can be from the connector missing, internal fault in the DIS module or any of the associated wiring from DIS to ECM. With Code 49, the ECM no longer controls engine timing & it defaults to 10 deg BTDC & stays there regardless of air temp, coolant temp, RPM or engine load. This code is also exclusive to 3.8 S/C's & 3.0 SHO's.
 
96 is just the ECM is not receiving the return signal (secondary circuit) that the fuel pump relay has turned on.
Most likely there is northing wrong with relay. It is a circuit fault as stated-not a relay fault. Pin 19 of ECM is not
getting confirmation that fuel pump has been energized. Somewhere between fuel pump relay & ECM there is a break (open circuit)
This fault will not effect how engine runs that I'm aware of.
Darn. That is the opposite of what I had hoped to hear, but it's a direction I will heed an alert to. Where do I even begin to do diag for this? I have a volt meter with two basic prods with short wires I've used to test for continuity in small examples, but that's really all the more experience I have with testing wires. I don't know what voltage, or ohms, or any of that to look for, nor what pins to test, but I REALLY want to start learning.

49 is generated when spark output (SPOUT) circuit is open. This can be from the connector missing, internal fault in the DIS module or any of the associated wiring from DIS to ECM. With Code 49, the ECM no longer controls engine timing & it defaults to 10 deg BTDC & stays there regardless of air temp, coolant temp, RPM or engine load. This code is also exclusive to 3.8 S/C's & 3.0 SHO's.

Disconnecting the SPOUT did put it in a rhytmic holding pattern + misfires, backfires, and a strong gas smell, so I'm guessing that's the default 10 deg setup. Plugging it back in, the car jostles RPMS all over the place and oscillates between trying to die to trying to idle with some normalcy with the same misfires and backfires. Makes me wonder if it's a stored (and thus moot) code from be fiddling with the SPOUT.
 
Yes, the 49 code could just be a stored code from you conecting/disconnecting the SPOUT. Clear the codes & see if it returns. I can look at my schematic to see what terminal or pin of the fuel pump relay sends the 12 volt signal to the ECM confirming the relay is energized. It goes to pin 19 of the ECM. As I said though I'm reasonabbly sure this code/issue wont effect how the engine runs.
 
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