Post Reply 
Brave Sir Robin
Author Message
Coupe' de Tat Offline
bourbon the other foodgroup
****

Posts: 6,976
Joined: Aug 2010
Post: #26
RE: Brave Sir Robin
780 =/= 740 or 760, words of wisdom
(This post was last modified: 06-03-2011 10:50 AM by Coupe' de Tat.)
08-24-2010 12:31 PM
Find all posts by this user Quote this message in a reply
Coupe' de Tat Offline
bourbon the other foodgroup
****

Posts: 6,976
Joined: Aug 2010
Post: #27
RE: Brave Sir Robin
grinding away!
[Image: 90fun210.jpg]
(This post was last modified: 06-05-2011 01:39 PM by Coupe' de Tat.)
08-24-2010 04:03 PM
Find all posts by this user Quote this message in a reply
Orie Offline
Parked in the garage
****

Posts: 1,741
Joined: Aug 2010
Post: #28
RE: Brave Sir Robin
From the (admittedly little) i have been told about the 780, your RSR should be in front of the battery, along with the aux fan relay, not on the strut tower like it is with 740/760's. Have a look, maybe that's true?

Sounds like maybe your ignition module is failing. Does messing with the key when you turn it to kp3 create any different results?

RIP seaNM9

If you can't explain it simply, you don't understand it well enough.
-Albert Einstein
08-24-2010 05:43 PM
Find all posts by this user Quote this message in a reply
miguel.760ti Offline
say WWD again, I dare you!
***

Posts: 266
Joined: Aug 2010
Post: #29
RE: Brave Sir Robin
I thought the aux fan was controlled by a temp sensor + relay and not the ecu.

If you have 0 voltage at your starter while cranking, something is wrong with your neutral safety switch or the solenoid has gone bad.

Looking at the wires, it appears as though one of the previous owners creatively bypassed the nss using a relay, I think pink, blue and black wires are used going from the nss to the starter/battery.

'88 760ti - Rattley k-car
'89 240dl - Non-running 240 #3 in krisverde's shop
08-24-2010 07:27 PM
Visit this user's website Find all posts by this user Quote this message in a reply
Coupe' de Tat Offline
bourbon the other foodgroup
****

Posts: 6,976
Joined: Aug 2010
Post: #30
RE: Brave Sir Robin
handy step by step directions expunged
(This post was last modified: 06-03-2011 10:51 AM by Coupe' de Tat.)
08-24-2010 09:13 PM
Find all posts by this user Quote this message in a reply
Coupe' de Tat Offline
bourbon the other foodgroup
****

Posts: 6,976
Joined: Aug 2010
Post: #31
RE: Brave Sir Robin
brand new ignition module and o2 sensor ordered, sack of relays on hand etc
08-26-2010 12:00 PM
Find all posts by this user Quote this message in a reply
Coupe' de Tat Offline
bourbon the other foodgroup
****

Posts: 6,976
Joined: Aug 2010
Post: #32
RE: Brave Sir Robin
still waiting for known good test components poast
08-28-2010 02:48 PM
Find all posts by this user Quote this message in a reply
Coupe' de Tat Offline
bourbon the other foodgroup
****

Posts: 6,976
Joined: Aug 2010
Post: #33
RE: Brave Sir Robin
orie, i found the relays where you said poast.
08-28-2010 04:34 PM
Find all posts by this user Quote this message in a reply
Coupe' de Tat Offline
bourbon the other foodgroup
****

Posts: 6,976
Joined: Aug 2010
Post: #34
RE: Brave Sir Robin
still no crank @ kp3, this is strange.

i am missing something major in the equation; half the fuse box dead in kp2... though i get instrument panel, chime, all accessories work. power door locks work.

i do spy some more "house" style wiring up by the ignition switch, this just keeps getting better.
08-28-2010 07:17 PM
Find all posts by this user Quote this message in a reply
timetrialman59 Offline
Junior Member
*

Posts: 37
Joined: Aug 2010
Post: #35
RE: Brave Sir Robin
Hey Scott I just bought a 91 780 and could come by, maybe?, and compare cars? Think yours is 2.4? I also found a separate wiring schematic book for these cars in the trunk from PO, thanks Tracy! I'm doing a 16 v swap, have 90% of parts so would like to compare notes. Looks good. timetrialman59
ps Still have my speedo???
08-29-2010 02:43 PM
Find all posts by this user Quote this message in a reply
Coupe' de Tat Offline
bourbon the other foodgroup
****

Posts: 6,976
Joined: Aug 2010
Post: #36
RE: Brave Sir Robin
sure, come on over, any help i could get troubleshooting would be stellar. i'd be happy to share what i have learned over the last ~18months of 700 series ownership.
[Image: Alien-face-plant-small.jpg]
08-29-2010 05:30 PM
Find all posts by this user Quote this message in a reply
Orie Offline
Parked in the garage
****

Posts: 1,741
Joined: Aug 2010
Post: #37
RE: Brave Sir Robin
(08-28-2010 04:34 PM)Coupe' de Tat Wrote:  orie, i found the relays where you said poast.

sweet, confirmation my brain still works sometimes.
08-30-2010 03:02 AM
Find all posts by this user Quote this message in a reply
Coupe' de Tat Offline
bourbon the other foodgroup
****

Posts: 6,976
Joined: Aug 2010
Post: #38
RE: Brave Sir Robin
still in a holding pattern and my car is lh2.2 poast.

i am beginning to suspect i need new ignition switch electrical portion.
08-30-2010 09:25 AM
Find all posts by this user Quote this message in a reply
timetrialman59 Offline
Junior Member
*

Posts: 37
Joined: Aug 2010
Post: #39
RE: Brave Sir Robin
Sunday let me know in pm with your address, was by once a couple years ago, so let me know, tj
08-31-2010 02:38 PM
Find all posts by this user Quote this message in a reply
Coupe' de Tat Offline
bourbon the other foodgroup
****

Posts: 6,976
Joined: Aug 2010
Post: #40
RE: Brave Sir Robin
(This post was last modified: 06-03-2011 10:52 AM by Coupe' de Tat.)
09-02-2010 02:17 AM
Find all posts by this user Quote this message in a reply
miguel.760ti Offline
say WWD again, I dare you!
***

Posts: 266
Joined: Aug 2010
Post: #41
RE: Brave Sir Robin
Did you ever figure out where the wires lead to on that odd relay?

'88 760ti - Rattley k-car
'89 240dl - Non-running 240 #3 in krisverde's shop
09-02-2010 09:31 PM
Visit this user's website Find all posts by this user Quote this message in a reply
Coupe' de Tat Offline
bourbon the other foodgroup
****

Posts: 6,976
Joined: Aug 2010
Post: #42
RE: Brave Sir Robin
i am fairly certain that it is the stock NSS/starter inhibitor circuit. it still has half a finger pointed at it for the no-crank.
09-02-2010 10:15 PM
Find all posts by this user Quote this message in a reply
WolfDK Offline
Boost addicted Volvo freak
*****

Posts: 2,264
Joined: Aug 2010
Post: #43
RE: Brave Sir Robin
I don't have much time right now, but see attached image please :
   
You can zoom by clicking image (opens in a new window)

- Enough boost is a fine balance between fun and flying parts
(This post was last modified: 09-03-2010 05:04 AM by WolfDK.)
09-03-2010 05:03 AM
Find all posts by this user Quote this message in a reply
Coupe' de Tat Offline
bourbon the other foodgroup
****

Posts: 6,976
Joined: Aug 2010
Post: #44
RE: Brave Sir Robin
awesome, this is exactly what i needed to see
09-03-2010 11:26 AM
Find all posts by this user Quote this message in a reply
WolfDK Offline
Boost addicted Volvo freak
*****

Posts: 2,264
Joined: Aug 2010
Post: #45
RE: Brave Sir Robin
You are welcome, hope it helps you finding the alien, if not then PM me and i will dig a bit more Smile

- Enough boost is a fine balance between fun and flying parts
09-03-2010 12:08 PM
Find all posts by this user Quote this message in a reply
Coupe' de Tat Offline
bourbon the other foodgroup
****

Posts: 6,976
Joined: Aug 2010
Post: #46
RE: Brave Sir Robin
the only other thing i would need to reference is how the "hot when kp2 or 3" side of the fuse box is energized by the ign switch., but sketched out like the starter circuit above. i am printing these materials and adding them to my stack of stuff.

the alien is hiding in the air ducts and using them to move about the ship. it only appears when the ship's engines are producing thrust, thus making it difficult to catch while piloting the ship.DodgyTongue
(This post was last modified: 09-03-2010 12:17 PM by Coupe' de Tat.)
09-03-2010 12:17 PM
Find all posts by this user Quote this message in a reply
WolfDK Offline
Boost addicted Volvo freak
*****

Posts: 2,264
Joined: Aug 2010
Post: #47
RE: Brave Sir Robin
I think i have what you need, will have a look Smile

No aliens in my air ducts, booast up and they flee like rats Tongue


   
   

- Enough boost is a fine balance between fun and flying parts
(This post was last modified: 09-03-2010 12:38 PM by WolfDK.)
09-03-2010 12:24 PM
Find all posts by this user Quote this message in a reply
Coupe' de Tat Offline
bourbon the other foodgroup
****

Posts: 6,976
Joined: Aug 2010
Post: #48
RE: Brave Sir Robin
HOLY SHIT tyvm!!!! as a result i suspect this weekend will be rather productive.
09-03-2010 01:58 PM
Find all posts by this user Quote this message in a reply
WolfDK Offline
Boost addicted Volvo freak
*****

Posts: 2,264
Joined: Aug 2010
Post: #49
RE: Brave Sir Robin
You are welcome Smile

Dunno how your approach is, but use a simple test lamp to trace the wires, its much faster and easier than using a DVM (they are high impedance input, around 1-100 Mohm). When you use a DVM to fault trace on a car, they can show incorrect reading as they dont load the circuit.

- Enough boost is a fine balance between fun and flying parts
09-03-2010 02:39 PM
Find all posts by this user Quote this message in a reply
Coupe' de Tat Offline
bourbon the other foodgroup
****

Posts: 6,976
Joined: Aug 2010
Post: #50
RE: Brave Sir Robin
thanks for reminding me, i need to go buy new test leads for my meter and also locate my test light; i accidentally tore the rt angle banana out of the black lead during my last session of derfingerpokin.
09-03-2010 03:49 PM
Find all posts by this user Quote this message in a reply
Post Reply 


Forum Jump:


User(s) browsing this thread: 3 Guest(s)