Starting problems some progress but PLEASE HELP !!

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grafi
Knows an Aerodeck isn't a 480
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Location: Budapest, Hungary

Re: Starting problems -- PLEASE HELP !!

Post by grafi » Sun Jun 05, 2011 8:21 pm

the maf connected to the rubber tube coming from the air filter housing.

you can check easily if its work, or not:
- start the engine.
- unplug the cable going into the maf.
- if the idle starts moving, or strugling, or something happens, then it works. (after a few seconds, the computer will correct the changes, so the idle will be normal again without maf connected.)
- if nothing happens, there is a problem.

remember, it is a simple check, only shows if the maf is dead, or not. Obviously, if you dont have smooth idle, you wont see if there is a change. :)

By the way, I asked around about your problem, but unfortunately I did not hear any new advices, just the ones wich were in the topic already. :/ Sorry.
2002 Volvo C70 Cabriolet B5204T4
1995 Volvo 480 'Modell 95' + B18FT + Richmod (sold)

r5b18ft
Knows where Volvo is from
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Re: Starting problems -- PLEASE HELP !!

Post by r5b18ft » Sun Jun 05, 2011 10:22 pm

grafi wrote:the maf connected to the rubber tube coming from the air filter housing.

you can check easily if its work, or not:
- start the engine.
- unplug the cable going into the maf.
- if the idle starts moving, or strugling, or something happens, then it works. (after a few seconds, the computer will correct the changes, so the idle will be normal again without maf connected.)
- if nothing happens, there is a problem.

remember, it is a simple check, only shows if the maf is dead, or not. Obviously, if you dont have smooth idle, you wont see if there is a change. :)

By the way, I asked around about your problem, but unfortunately I did not hear any new advices, just the ones wich were in the topic already. :/ Sorry.
yeah it idles fine.. so I should see a change.

Ok, thanks anyways mate :wink:

r5b18ft
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Starting problems

Post by r5b18ft » Mon Jul 25, 2011 1:24 pm

Hello mates,

Still having very strange starting problems.. :cry:

After a lot of fiddling this is the situation -- car will start when cold (but needs alot of cranking!) but will not start when warm ! Once the temperature sensor is unplugged it starts immediately but has a veryyy rough idle - plug it in again and runs very smooth. Even if the engine is completely cold, if the temperature sensor is unplugged it needs far less cranking to start. Once its running, its idles and runs very good!

Ignition is always OK, problem is fueling (only while starting -- once its running everything is OK)

Temperature sensor brand new, original BOSCH.

Wiring to & fro temperature sensor all correct.

Brand new MAF.

Brand new starter motor.

Any thoughts please ???

r5b18ft
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Re: Starting problems

Post by r5b18ft » Thu Jul 28, 2011 8:28 am

Nothing ? :(

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glasgowjim
480 Is my middle name
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Location: GLASGOW SCOTLAND

Re: Starting problems some progress but PLEASE HELP !!

Post by glasgowjim » Thu Jul 28, 2011 12:54 pm

Can anyone help here ?

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grafi
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Location: Budapest, Hungary

Re: Starting problems some progress but PLEASE HELP !!

Post by grafi » Thu Jul 28, 2011 10:15 pm

try another ecus. both plastik and metal.
2002 Volvo C70 Cabriolet B5204T4
1995 Volvo 480 'Modell 95' + B18FT + Richmod (sold)

r5b18ft
Knows where Volvo is from
Posts: 190
Joined: Wed Nov 05, 2008 10:04 am

Re: Starting problems some progress but PLEASE HELP !!

Post by r5b18ft » Fri Jul 29, 2011 9:01 am

grafi wrote:try another ecus. both plastik and metal.
Already done that .. same problem :(

r5b18ft
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Re: Starting problems some progress but PLEASE HELP !!

Post by r5b18ft » Thu Aug 04, 2011 5:44 pm

still with problem - now even worse!

Car will take a lot of cranking to start and if turned off once warm it will not start again ! Only will start if the temperature sensor in unplugged .. and then plug it back in once it is started.

Once started runs veryyyyy rich !!

List of stuff recently checked & replaced;
New MAF
New temperature sensor
New starter
New spark plugs
New coil
Leads, dizzy cap & rotor arm all good
New fuel pump
New fuel pressure regulator
Changed both ECU's - still same problem
inspected wiring loom - all good


Problem is fuel related - ignition is OK


Please help meeeee !!!!!

dutmanjf
Started learning about 480
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Location: The Netherlands

Re: Starting problems some progress but PLEASE HELP !!

Post by dutmanjf » Thu Sep 08, 2011 8:01 pm

Did you renew the fuelpump relay?
480 Turbo 1991 305

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grafi
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Joined: Wed Jun 17, 2009 9:12 am
Location: Budapest, Hungary

Re: Starting problems some progress but PLEASE HELP !!

Post by grafi » Sat Sep 17, 2011 7:27 am

dutmanjf wrote:Did you renew the fuelpump relay?
Would you be so kind as to explain? This is new to me, and I have some fuel related problems as well. :)
Thanks!
2002 Volvo C70 Cabriolet B5204T4
1995 Volvo 480 'Modell 95' + B18FT + Richmod (sold)

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glasgowjim
480 Is my middle name
Posts: 4830
Joined: Sun Oct 01, 2006 5:28 pm
Location: GLASGOW SCOTLAND

Re: Starting problems some progress but PLEASE HELP !!

Post by glasgowjim » Sat Sep 17, 2011 3:29 pm

there are 2 relays clipped up underneath the dashboard in the lhd car as you sit at drivers seat it is up to the left of your instrument panel. Lie with head in drivers footwell and shine up , one is ignition relay the other the fuel pump relay.

go to 480 club europe home page select downloads then down load the fuse box relays by either myself / esta best do both as there is an ignition relay there as well as the 2 underneath , oh if you have aircon there could well be 3 relays. :lol:

http://volvo-480-europe.org/volvo480/downloads.php

or even better look at this thread as I have a photograph of the location posted dated Sun 14th Aug 2011

http://volvo-480-europe.org/forum/viewt ... 12&t=33043

dutmanjf
Started learning about 480
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Location: The Netherlands

Re: Starting problems some progress but PLEASE HELP !!

Post by dutmanjf » Sat Sep 17, 2011 10:07 pm

Thanks Jim :) And for the LHD it's much easyer to remove your glovebox for some workspace.
480 Turbo 1991 305

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