Hesitation under load

Started by edgasket, August 08, 2008, 10:30:08 AM

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edgasket

August 08, 2008, 10:30:08 AM
hi all, quick question...

When the car\'s under load and on boost, there\'s something that feels like hesitation and the knock level on the PFC goes up to 130 (it\'s normally around 20), it\'s only happened a couple of times - as in, since it happened the second time, i haven\'t been on boost... I don\'t think it happens when there\'s smaller load, like driving down a hill, or if it\'s eased out, but not sure.

Any one got any suggestions or ideas on what I should check?

PS, car has PFC that was mapped in Jan 2007, I\'ve had no problems with it up till about a month ago when this started happening. Also has decat \\ blitz back section, HKS intake, air pump removed, intake elbow, fmic.

Thanks! :Thumbsup!

trevtubby

#1
August 12, 2008, 06:40:50 PM
have you checked your plugs recently?

When was the last time they were changed?

Always better to start with the smaller/cheaper things first :)
QuoteImpossible is just a big word thrown around by small men who find it easier to live in the world they’ve been given than to explore the power they have to change it. Impossible is not a fact. It’s an opinion. Impossible is not a declaration. It’s a dare. Impossible is potential. Impossible is temporary. Impossible is nothing.

Contact me on: trevisbest@hotmail.com :)

edgasket

#2
August 13, 2008, 09:21:01 AM
the plugs were done during a service in Jan so they\'re 8 months old, with about 3 or 4k Kms on them... I\'ll change them anyway, have been threatening to do that for a few weeks :)

trevtubby

#3
August 13, 2008, 01:59:17 PM
if that doesnt help check all you hoses for cracks or splits, check you intercooler pipes as well, they tend to split (mine did).

In fact check all the hoses/pipes anyways, before the plugs..as its free haha.
QuoteImpossible is just a big word thrown around by small men who find it easier to live in the world they’ve been given than to explore the power they have to change it. Impossible is not a fact. It’s an opinion. Impossible is not a declaration. It’s a dare. Impossible is potential. Impossible is temporary. Impossible is nothing.

Contact me on: trevisbest@hotmail.com :)

BlitzBoy

#4
August 13, 2008, 02:04:31 PM
it could be a failing fuel pump or reg
"Piston Killa" 3rd Gen\'94 \'Oldone Racing Full Bridge Ported REW 13b engine with SCR seals\'. HKS T51 KAI turbo BBM mapped Motec ECU

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AndyGen3

#5
August 13, 2008, 02:24:13 PM
Quote from: BlitzBoy;524081it could be a failing fuel pump or reg

Thats what i told him :)

Wudnt mind he has a BOSCH 044 sitting there nearly a year and hasnt put it in! Id say its that.. Dragon increased the flow by a good bit, id imagine and its just about to go belly up!

edgasket

#6
September 03, 2008, 03:29:11 PM
It\'s gone out of it since I changed the plugs and leads... I\'ll do the pump this weekend anyway, just to keep Andy happy :)
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