Automotive_Buff

Apologies in advance for the long text.



Hi guys, several problems which I think stem from the battery regulator.

I've incorrectly jumped the car several times a few weeks ago when the battery died. I jumped it using the spare battery and connected the the negative clamp to the negative terminal and not the metal ground rod. I think I've shagged the battery regulator. I then left the car sitting for a few days until I was able to buff and polish the new headlight I had received before installing it into the car.

Monday morning I tried to go to school, but the battery had died. Switched out the batteries and that's when the problem began.

The electronics went haywire for a second and the rear passenger side speaker started constantly emitting a tone and popping. The car finally turned over with the new battery and it was misfiring and the RPMs bounced between 600 and 1200 RPMs. Cylinders 2 and 5 were misfiring and I limped over to my indy mechanic. He kept it a day and fixed the issues. Cylinders 1-5 had the electric coils popped out. For some reason the rubber had warped and popped the coils out of the sparks.

The misfiring has been fixed but the RPMs will continue to bounce. The mechanic told me he would clean out the throttle body and relearn the throttle.

He couldn't clean out the throttle body because he didn't want to start tearing the car down just to get to it. So he did a relearn on it. It seemed fine at first but still had the same issues when I drove it back home. The RPMs would bounce between 600 and 1200; the car would keep the RPMs at 1200 when downshifting and slowing down... effectively preventing me from slowing down properly so I had to constantly put it in neutral to slow down.

In neutral the car seems fine. It's when it's in gear that the erratic behaviour shows. I made a sharp right turn and it stalled in the middle of the turn. If I keep it in manual mode, it's not so bad. If I let the car decide which gear to be in, it will bog down as it tries to keep it coasting in 6th gear.

When I came home the RPM bounces became a bit more erratic and violent so I coasted into the driveway in neutral. When I was slowing down nearing my garage door, the car decided to rev to 2100 RPM and hold it there. I thought maybe the throttle got stuck on the weather mat. Pressed it and pulled and it jumped to 2400 and looked like it was gonna rise. I quickly turned the car off in neutral and put it into park.

Battery has been at 1 bar the entire time. Did not increase, did not decrease. When it stalled I got the Battery Energy Management display on the dash which is normal at low battery levels.

Any help would be appreciated.

Thank you in advance, guys,



Here's the DTCs from the Engine and Battery Regulator:


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Address 01: Engine Labels: 077-910-560-BFM.LBL
Control Module Part Number: 4E0 910 560 A HW: 4E0 907 560
Component and/or Version: 4.2L V8/5V G 0070
Software Coding: 0007773
Work Shop Code: WSC 02313 785 00200
VCID: 1F59C5E357BD29FA065A8D1-804A
11 Faults Found:

18284 - Valve for Torque Support Mount
P1876 - 004 - Open Circuit
17979 - Left Engine Mount Solenoid Valve (N144)
P1571 - 001 - Short to Plus
17544 - Fuel Trim: Bank 1 (Add)
P1136 - 001 - System too Lean
17546 - Fuel Trim: Bank 2 (Add)
P1138 - 001 - System too Lean
17538 - Fuel Trim; Bank 2 (Mult)
P1130 - 001 - System too Lean - Intermittent
17536 - Fuel Trim; Bank 1 (Mult)
P1128 - 001 - System too Lean - Intermittent
16523 - Oxygen (Lambda) Sensor B1 S2
P0139 - 004 - Response too Slow - Intermittent
16891 - Idle Control System RPM
P0507 - 001 - Higher than Expected.
17987 - Throttle Actuator (J338)
P1579 - 001 - Adaptation Not Started
17519 - Oxygen (Lambda) Sensor Regulation: Bank 1
P1111 - 001 - System too Lean
17555 - Oxygen (Lambda) Regulation Bank 2
P1147 - 001 - System too Lean

Readiness: 0010 1101

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Address 61: Battery Regul. Labels: 4E0-910-181.lbl
Control Module Part Number: 4E0 910 181 B HW: 4E0 915 181
Component and/or Version: ENERGIEMANAGER H02 0240
Software Coding:
Work Shop Code: WSC 00711 711 60452
Additional Info: 000915105AK von VA0 1234567890
Additional Info: Geraet 60452
VCID: 1F59C5E357BD29FA065A8D1-804A
5 Faults Found:

02276 - Quiescent Current Stage 5
000 - - - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 7
Fault Frequency: 87
Reset counter: 255
Mileage: 104061 km
Time Indication: 0
Date: 2002.11.14
Time: 05:51:29

02273 - Quiescent Current Stage 2
000 - - - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 7
Fault Frequency: 23
Reset counter: 255
Mileage: 266953 km
Time Indication: 0
Date: 2018.01.17
Time: 07:37:53

02277 - Quiescent Current Stage 6
000 - - - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 7
Fault Frequency: 1
Reset counter: 255
Mileage: 269166 km
Time Indication: 0
Date: 2018.03.14
Time: 14:02:57

02255 - Voltage Measuring Lead from Vbat
009 - Open or Short to Ground - Intermittent
Freeze Frame:
Fault Status: 00101001
Fault Priority: 4
Fault Frequency: 1
Reset counter: 92
Mileage: 269138 km
Time Indication: 0
Date: 2003.06.18
Time: 00:06:23

00532 - Supply Voltage B+
002 - Lower Limit Exceeded - Intermittent
Freeze Frame:
Fault Status: 00100010
Fault Priority: 1
Fault Frequency: 2
Reset counter: 96
Mileage: 268987 km
Time Indication: 0
Date: 2018.03.03
Time: 13:41:22







EDIT

Soldered the fragile red wire connected to the positive terminal. Switched out batteries. Still reads battery level at 1 bar.

Both batteries were measured at 12.90V and 12.95V respectively.

ltooz_a6_a8_q7

Clear all failures. The battery level should come up after a few miles driving. The PMS should take care of everything.
If the idle is good, acceleration is bad, only a few things I can think of are: throttle body, MAF and speed sensor, but if it was good before, then some electrical modules are walking wounded.
Cheers,
Louis

Automotive_Buff

I'l try it, but I definitely think the power management module needs to be replaced. Fingers crossed that's not the case.