Bain Member 827 Member For: 21y 7m 13d Gender: Male Location: Melbourne Posted 18/09/07 11:31 PM Posted 18/09/07 11:31 PM Hi All,Just wondering what could be causing the following issue? Ive had my car tuned and the spark plugs replaced - since the tune though, sometimes my car will drop below 500rpm when slowing down then kick itself in the guts and take it up to 1000rpm, then back down to 500rpm and so on and so on until the car is standing still.Some days it doesnt do it at all.. Im just wondering if this could be a spark plug issue?The other query I have is in regards to valve springs.. How do I know when these are being pushed harder than they should?The car seems to struggle once it gets to around 4k rpm onwards, almost like it plateau's...Its a 6 speed manual if that will help.Thanks for any info you may have.Bain
XR06T Legacy Donating Member 4,146 Member For: 21y 3m 19d Gender: Male Posted 20/09/07 01:09 AM Posted 20/09/07 01:09 AM no help but I had the same idle problem with the capa generic 10psi. sometimes uneven, other times ok. I am using the 8psi now and it has no problems so im guessing its a tune related problem.was yours a custom tune?
Bain Member 827 Member For: 21y 7m 13d Gender: Male Location: Melbourne Posted 20/09/07 02:45 AM Author Posted 20/09/07 02:45 AM no help but I had the same idle problem with the capa generic 10psi. sometimes uneven, other times ok. I am using the 8psi now and it has no problems so im guessing its a tune related problem.was yours a custom tune?Yeah, mine was a custom tune. I have returned the car to stock and it still happens, which I guess is pointing to the spark plags being gapped to much? or arent all the same..
The NUT Member 163 Member For: 20y 6m 3d Location: Townsville Posted 20/09/07 03:39 AM Posted 20/09/07 03:39 AM I have the same problem mate, the revs bounce up and down between 500 and 1200rpm when slowing down and then usually level out once at rest. I originally thought it was the TPS so I had that changed which did help but the car still continues to do it, the only thing left which I can think of is that the valve springs are on their way out...... Ill keep a close eye on this threadCheers
fnp Member 38 Member For: 20y 2m 5d Location: Perth Posted 20/09/07 08:22 AM Posted 20/09/07 08:22 AM I had this slightly till I cleaned out my throttle body.
Bain Member 827 Member For: 21y 7m 13d Gender: Male Location: Melbourne Posted 20/09/07 10:27 PM Author Posted 20/09/07 10:27 PM Throttlebody is clean as a whistle I cleaned that out thinking the butterfly was getting stuck.I'll be sticking the stock tune for the car back in and replacing the spark plugs to see if this is the cause. (90% sure it is)Ill reply here at the end of next week with what I find.
MiKa Legacy Donating Member 4,243 Member For: 20y 1m 21d Gender: Male Location: Melbourne, VIC Posted 01/10/07 08:19 AM Posted 01/10/07 08:19 AM Mine was doin the exact same thing Bain... but I gave my throttle body a clean and it hasnt happend since...Mike....
FPV TRANNY Im the one and only Legacy Donating Member 3,557 Member For: 21y 9m 5d Gender: Male Location: In my house Posted 01/10/07 08:32 AM Posted 01/10/07 08:32 AM Had the same thing with the 10 psi tune.Load it to factory and all was sweet.
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