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vn_commy_boy
Learner
5 Posts
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 Posted - 18 Jan 2007 : 9:17:38 PM
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hey guys i got a vn commodore now when i drive it it feels like it takes a while for the peedle respons to kick in...if u no what i mean...it revs up to about 1000 then it will start to move does any one no what that could have anythin to do with???also i was wondering if there are any mods that i can do without spending to much money...i used to be a mechanic so i will do most of the stuff my self
cheers
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mouce
National Driver
1525 Posts
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Posted - 18 Jan 2007 : 11:21:06 PM
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If it's an auto, then it could be your tranny playing up. Might be worth doing a fluid change on it, to see if that makes any difference.
It's also well worth cleaning out your throttle body and (if it's an auto) resetting your kickdown cable too. http://www.vncommodore.com/forum/topic.asp?TOPIC_ID=394
If however what it's doing is idling rougher than normal, and it takes its time getting to 1000-1500rpm then takes off like a rocket. Check the condition of your coil packs/leads and plugs. A sure fire sign that either a coil or plug or lead has died is that it's sluggish to about 1500rpm then you just FLY.
A quick and easy way to check the coil packs is to go for a short drive 5-10 minutes then pop the bonnet and feel each of the coil packs. If one is much hotter than the others then you can more or less rest assured that it's playing up.
Checking leads is nice and easy, especially if you've got a multimeter handy. Test the resistance of each lead, anything more than 17kOhms and you have a dud lead.
"checking" plugs is a bit of a nothing in my books, I don't believe in re-using spark plugs now-days. it's too easy to introduce micro-cracks into the ceramic insulator. They are fairly cheap, so I just replace them instead of cleaning them up and re-gapping them.
There's a whole stack of cheap mods that you can do to the mighty VN. Have a search on the forum for how to do a few of them.
Some easy ones include:
*Open t/b to 100%
*Hi-flow filter with cold air intake
*Pod Filter with cold air intake
*Remove bell-mouth (S2 engines only)
All of these have been covered time and again on this forum, have a bit of a look around and you'll find a few more. |
Bite off more than you can chew, and chew like hell - Peter Brock (1945-2006) |
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vn_commy_boy
Learner
5 Posts
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Posted - 19 Jan 2007 : 7:31:05 PM
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hey what are these 2??
*Open t/b to 100%
*Remove bell-mouth (S2 engines only) |
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trizo
Forum Moderator
3091 Posts
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Posted - 19 Jan 2007 : 8:25:01 PM
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M8 ONCE AGAIN HAVE A READ AROUND ... In the members section is a how 2 on the throttlebody....if u even clink on the link that mouse has so generously supplied then it should all become clear!!!!! ;)
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3 can keep a secret if 2 are dead |
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mouce
National Driver
1525 Posts
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Posted - 19 Jan 2007 : 8:29:42 PM
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Most VN throttle bodies do not open to 100%, even with your foot on the floor. Check out the 'how-to' thread on cleaning your throttle body out, it's all in there. Altering it so that it can open to 100% (if it doesn't already) makes a noticable difference, especially at WOT.
The Bell-mouth is a bit more of a sneaky one. To try to 'tame' the VN a tad, and to try to smoothen it out, when they released the Series 2 VN, there were a few alterations to the engine. Assuming that you've got a Series 2 engine (if your fuel rails are black and tubes then you've got an S1, if they are big and silver and chunky it's a S2), have a look at your inlet manifold (the thing with the 3800 on it). Out the back where the throttle body sits, is a nice little metal elbow which connects the t/b to the manifold. Between that elbow and the manifold there will be a thick chunk of plastic.
Yank out the throttle body, and the elbow then remove the large plastic bell-mouth. Replace it with a paper gasket for a S1 engine, and bolt it all back up. Reset the ecu to allow for the different mixtures that the engine will be getting and you'll find that you've got a bit more bottom end torque. The only downside to this is that idle will get a bit rougher, but who really cares about that? If we wanted a smooth idle, we'd all drive 1.5L 4cyl cars.  |
Bite off more than you can chew, and chew like hell - Peter Brock (1945-2006) |
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