Back on the road

4 x new tyres, wheel alignment and the beast is back!

Better in every way to how it was before.

HUGE thanks to JtC!

There is no way I could have taken this photo, in this time frame, without his help.

Thanks again.

J

Swappin' Relays + Grit Blasting

---------- Forwarded message ----------
From: John
Date: Fri, Dec 2, 2016 at 12:56 PM
Subject: Verrry interesting...
To: JtC

Yo!

This morning I swapped the fuel pump relay with one of the thermo fan relays and gave it a start. Buzzing as usual. I thought I would check fault codes...

P0036

P0056

P0463 and

P0483

...are all usual suspects, no problems there.

The interesting one is P0480...

Cooling Fan Relay 1 Control Circuit

http://www.obd-codes.com/p0480

Extract:

"The causes for this DTC may include:

  - Faulty fan control relay 1"

Don't know B2aaa, but I think "B" is something to do with body control module (which is deleted). I know the low-speed thermo fan function is managed by the BCM, so there is every chance it is tied-in with P0480.

Video here...

https://www.youtube.com/watch?v=qjGA3Cb9O6k

After switching the car off I swapped the relays back again.

A few other things...

Coolant is below the top of the core.

Packed the bonnet hinges and bonnet latch into the Commodore in the hope that I can find some time this arvo to give them a grit blast.

< Edit... done! Photo below >

With all the starts I have been giving the Chev this week, I decided to disconnect the negative terminal and put the battery on trickle charge.

J

OBD2 Fault Codes

Entered a custom sensor ID for the oil pressure into the OBD2 scanner last night. Tried it this morning... no good. Will keep trying.

Read the fault code log. There were a few there. I cleared the log, then checked again and nothing resurfaced, so it looks like the sensors we are no longer using (e.g. post-cat O2 sensors) have been switch off. I'll keep an eye on it.

Log of fault codes...
P0036
P0054
P0056
P0060
P0123
P0223
P0463

Doing a bit of research (e.g. http://grego.ca/limp.htm), a TPS fault is treated REALLY seriously (which makes sense as the computer can't reliably know where the throttle blade is).

Remember how the throttle butterfly plug wasn't plugged in? This one caught my eye...
P0223 Throttle Position Sensor/Switch B Circuit High Input

And I quote...
"When this code is stored, the PCM will usually enter limp in mode. Engine acceleration will be severely limited (if not disabled) in this mode".

Here's hoping that clearing that fault will be the simple fix to the lack of power!

Itching to take this thing for a drive...

J