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slimecity
P Plater
20 Posts
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 Posted - 05 Aug 2010 : 1:26:03 PM
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Hi there - we have a 1989 VN - she stalls at any speed but more likely when the engine is warming up - the prob is worse in really cold days (ie: NZ cold days, not aussie cold days!)
The CPU has been replaced and the brake booster also - this fixed a pre-existing vacuum leak. The problem is totally random and can spring from no where. Plugs just replaced. I reckon this is a fuel-feed problem. I have read on checking the fuel filter - do i also need to check the throttle body? Where do i find this?
Engine lite comes on when she does altho the garage reckons there's no memory kept so they cant ID the code????
cheers! si
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Simon |
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Mechknight73
National Driver
1001 Posts
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Posted - 05 Aug 2010 : 1:48:21 PM
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| Check your fuel line from the tank to the injectors. If all of that checks out, check the fuel pressure regulator; a tiny vacuum actuated valve towards the back of the intake maifold. If it still is a problem, then start checking the throttle body, and the idle air control valve. In diagnosing anything, go for the "stupid and blindingly obvious" first, then you start branching out into obscure things if all the obvious things are ok. |
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andrewpapa
Fully Licenced
122 Posts
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Posted - 05 Aug 2010 : 8:11:34 PM
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| id chek the (idle air control valve) first and give it a good cleen,and cleen the throttle body |
i am not a licenced mechanic but i do have years off experience fixing and restoring cars and doing them up ,i can even do-motors-up,panel betting,spray painting,electrical work. i know What i am doing when fixing my cars, i am not saying i know everything on how to fix cars but i can fix them with information and help off the internet and this site.vncommador.com |
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andrewpapa
Fully Licenced
122 Posts
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Posted - 07 Aug 2010 : 5:18:18 PM
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| and try 'Reseting the ECU ( Reset ECU ) |
i am not a licenced mechanic but i do have years off experience fixing and restoring cars and doing them up ,i can even do-motors-up,panel betting,spray painting,electrical work. i know What i am doing when fixing my cars, i am not saying i know everything on how to fix cars but i can fix them with information and help off the internet and this site.vncommador.com |
Edited by - andrewpapa on 07 Aug 2010 5:19:57 PM |
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slimecity
P Plater
20 Posts
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Posted - 13 Aug 2010 : 1:17:23 PM
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| Thanks guys, I'll try all suggestions - am starting by replacing the fuel filter ASAP. |
Simon |
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slimecity
P Plater
20 Posts
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Posted - 14 Sep 2010 : 10:43:43 AM
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| Hey there - cleaned the IACV and throttle body - It did make a bit of a difference. Also changed the fuel pump relay, and cleaned plug connector at fuel tank to the actual fuel pump - water had been getting into it and possibly dirtying up the connecting pins. Next is the fuel pressure regulator - how do you check that this is operating properly? Just squirt some WD40 into it? Or simply replace with another one if possible? Cheers! |
Simon |
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Mechknight73
National Driver
1001 Posts
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Posted - 14 Sep 2010 : 1:09:21 PM
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| A fuel pressure regulator valve should be easy to source, but the quickest way to check it would be take it off, connect a small length of vacuum tube to the vacuum fitting, and suck on the end. You should "feel" the valve moving. If it resists a lot, just replace it. |
Edited by - Mechknight73 on 14 Sep 2010 1:10:32 PM |
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