solving electrical gremlines *now with added hope...(well..)

[Edcase 300]

Rightyo... few questions..

Firstly, my 1989 360 GLT (when it was working-hasnt been on road for almost a year ).. it had a two tone horn but for some reason the two tone horn became a Ferrari-esque wimpy one tone honk. Does anyone know what could have caused this to occur? All the fuses (checked) are fine.Im just wondering if its something to do with wiring or wires giving up the ghost?

Also, has anyone done a Twin Blade fuse upgrade on thier Vulva? Im co nsidering this as actually hate the 300s poor poor electrics and it seems cheap enough to do....

Oh and... i havent driven my car for over a yr (it failed to start and our RAC neighbour got it going with some WD40 etc) got it home..hve replaced Rotor Arm,Dizzy Cap,HT Leads (ignition system pretty much) She cranks but does not fire....got spark there but no fuel to injectors (and no smell of fuel-leakage obvious on car)... Im think possibly...Fuel Pump is dead,or Injectors? (fuelling issue-crud build up in tank?) Or could it be the ECU? Ive heard its mounted in wierd place-behind radio?

Is there anything else worth checking? Would a knackered MAF or Cold Start Injector Prevent starting?

Thanks in advance..just need your thoughts really..any advice is mega welcome (im still pretty new to car mechanics + ive posted something similar before but not so up to date) Sos for the long post btw

[SteveP]

Fuel pump fuse on the inner wing behind the battery? Or fuel pump relay? Doubt a tank would crud up within a year.

[Speedy88]

You could take the hose off your regulator and see if it primes on turning the key. If it does then your fuel pump is fine. Also after a year the petrol will be borderline questionable, get at least £10 of fresh fuel in there.

[Edcase 300]

by SteveP » 01 Apr 2010 05:07 pm
Fuel pump fuse on the inner wing behind the battery? Or fuel pump relay? Doubt a tank would crud up within a year.

Ahh good point I tested pretty much all the car's relays (including the big black one and the pump relay-plus ones in dash) They all seem to work (got my dad to help me out with the ammeter etc).

The fuses seem ok... i swapped them with new items (infact did tht for all fuses in both boxes -making sure the correct ones went in the right place)..unfortunatley the person who had my car before me... did a lot of poor/clumsy jobs on the car... i had a plank in the front left seat so i replaced my front seats with saggy but safer items from my parents old 340 (RIP G205 XPX).... I replaced quite a few things... Rear boot struts (where failing on 360)..Bonnet (from 340 less rusty), 340 Grill on 360 (360 grill is Work in Progress...) well to put it short..quite a few lil things.The guy had cut the cables from the centrl locking etc when removing his beloved CD player (got dad-he fixed the wires -Jobs a good 'un), Earthing issues in Back..(you know the score..got dad -sorted)....

Thing which really pissed me off was looking t fuses bck then and noticing that most were in worng place (ratings!) something had to go! Blown fuse..then found out and sorted them out-so no problems so far with them...I do wonder if damage has been done though to the electric system (it was crap to start with tbh)

Oh man sos for the essay-i love writing

[Edcase 300]

You could take the hose off your regulator and see if it primes on turning the key. If it does then your fuel pump is fine. Also after a year the petrol will be borderline questionable, get at least £10 of fresh fuel in there.

Ahh mate thanks Im going to try that at some point! I was looking online and I think I saw replacement regulators for not a lot..fuel pumps for the 360 on the other hand seem to be a bit more dear..

I actually took my bttery off the charger...plonked it in (bloody heavy thing!)...connected it up...turned le starter jive...hmmm started sounds nice and in working order sweet! but...do'h..i forgot i removed the blooming fuel filter for some reason or another! Needless to say.. cranking the starter..nothing came out from the hose which is originally connected to the filter...

I wouldnt mind at some point maybe checking out the regulator + cleaning out the fuel lines, rail etc. Just wondering (this probbly sounds dumb and i have a bad feeling bout it now starting to look like the pump being dead (money eeek)...but if there is no fuel getting to the pump then surely....or does it pass through the regultor then to the pump ) (lolz yes i know im quite nieve with these things)

Grrr want to get down to a 300 meet if im ever rolling

[Edcase 300]

sos to resurrect an old post...

i think ive been a bit dumb.. and i expect to be laughed at lolz

things have moved slow as ive only until now had any time...

I (with reluctant help of my dad) tested my fuel pump in situ. The fudging thing works ..squirt squirtlolz (i just hooked up a battery to where the fuel pump wires normaly go)..

after studying the V3M wiring guide..i noticed that my aux fuse numbers were wrong (v wrong) 2x25 amp blue wrong instead of 2x8 white.

now... questions...

im going to clean my fuse contacts & crimp/bend in if needed
failing this...(if its still being "$££"$"£$ lolz)..
do you think my fuel pump (red) wire might be beggered?

Alsodad mentioned that the dashboard lights were working intermitantly then were not working... (ive painstakingly removed the dash andcheck everything including relays-all seems fine this side).. im guessing my main fusebox contacts should get cleaned etc? just seems oddd (im crud at electrics)

any suggestions really welcome right now..cheers Ed.

[Chris_C]

just for amusment, check the plug mentioned in this thread http://www.volvo300mania.com/forum-uk/v ... f=5&t=9808

Directly above your accel pedal.

[Edcase 300]

lolz i bet that must have been annoying! Is she ok now? Problem fixed?

Oh righty then..im going to go and do a quick inspection of said connector..will update once its checked...

[Edcase 300]

Yo Chris just checked my brown plug and its neighbours -tbh i just had a quick at most of the connections in the region...everything looks fine to the naked eye (im a numpty with these things) but it all seems in good order.LOl the connector to the left (black plug-next to the brown one which is next to the white plug) was disconnected.Just as well I checked-thanks for the pointer though m8

After reading what you went through Its defo worth checking the brown plug just above the accelerator!

[Edcase 300]

Just to add... I think my front shocks are shot I applied pressure and she sublty rebounded a few times...I wonder if the MOT man will pick up on that come that time in the year....

however if it does fail on that (may well do) then I think some springs from classicswede are on the cards...

[Chris_C]

.LOl the connector to the left (black plug-next to the brown one which is next to the white plug) was disconnected.Just as well I checked-thanks for the pointer though m8

Are you sure thats how you found them? It should be Brown White Black from left to right as you sit in the car (I've still got a spare fusebox on the desk here to check )

Did you test the fuel pump with the key in the ignition and check to see if it was pumping then?

[Edcase 300]

oh shizzle sos my brain muddles messages up I meant to say Brown-White-Black lolz!

The main thing is my dad had a mechanice look at my car when it stopped working then it really wouldnt start... (i guess the white lead beign unplugged didnt help either) What does the white one feed to? (Im slowly learning the diagrams im just slow )

The fuel pump is working didnt work initially with using ignition. It worked the other day when i connected the battery (with some wires & croc clips) to where the red & brown normally connect to it.

[Chris_C]

Right, get a multimeter and start at the fuel pump work towards the battery. The green book will show which path the wires take. Somewhere it must be disconnected or have corroded.

[Edcase 300]

Cheers man I'll report back (hopefully with success)

[SteveP]

Just thought I'd point this out... the fuel pump will only have power when the engine is cranking, it wont come on with the ignition in the first position