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The mkiv Supra Owners Club

Hesitation.....


Suprash

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Hi guys, How the fuck are you all, good I hope. I will get to post a bit more on here soon, promise - miss you all......like the plague lol.......only messing.

 

Right anyway been forced to post on here as my baby is getting bad hesitation, now this only happens on the motorway usually after 15mins or so. I can be sat there trundling along at 80, go to give her a little squeeze or even plant the right foot, and boost gauge reads more boost, but she gets really hesitant for a few seconds, like a good couple of seconds, then its normal service resumed and we're getting the power I requested 200 yards behind me........

 

So you lovelly knowledgable peeps, whats your verdict, spark ?? Fueling ???

 

Why does it only seem to happen on the motorway, is it heat related....???

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changing to a colder grade plug will help, especially if you are running more than stock boost pressure.

 

Ive recently upped the power on my supe and can definately notice a slight hesitation around 4000rpm (when no. 2 tubby kicks in). Thing is, in my auto, it feels like the gearbox is going to drop out and hit the floor when the hesitation happens.

 

J

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Well its probably more around the 3k rev range as thats what 80mph sits at, but Im not thinking plugs, have been told it might be a lazy pump, so am going to do the 12v pump mod.

 

Suprastevo, yeah mate, that sounds like a plan, pop round mine and we'll swap, lol.... :D I had a funny feeling it was the bumper.......

 

EDIT: and also already have IK24's or whatever, grade colder then standard.

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  • 1 month later...
  • 3 weeks later...

Cheers Ash. TBH i think mine has cleared up now. If it's dry tonight may have a blast on the way home. I'm pretty sure the tank as 3/4 full or there about's when it last happened. I am though having my revs bounce up and down in top gear at around 100. Im thinking this may be the fuel filter and willtry and change it next week.

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Well its probably more around the 3k rev range as thats what 80mph sits at, but Im not thinking plugs, have been told it might be a lazy pump, so am going to do the 12v pump mod.

 

Suprastevo, yeah mate, that sounds like a plan, pop round mine and we'll swap, lol.... :D I had a funny feeling it was the bumper.......

 

EDIT: and also already have IK24's or whatever, grade colder then standard.

 

Hi Ashley, I had the exact same problem. Mines turned out to be sparkplugs as they were not gapped right.

What boost do you run at? Do you get any detonation? Maybe to do with the recent hot weather, the intake temperature being high?

Have you tried using lower boost - does the same thing happen?

 

Ro

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Ian might be onto something, with the fueling, mine looks like its heavily over fueled at times. When I had some 22's I think they were, when they was taken out they showed signs of detonation, but thats cause the plugs werent up to the job. It has to be either their not gapped right, or fueling, Im sure of it.........current 24's were taken out a few days after being put in and they looked good.

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  • 5 years later...

Did u find the cause ash? Fitted that clutch and can floor it for the first time, get really slight hesitation then clears then comes back then clears, can hardly feelnit but it's there, if I lift the boost it's worse.. Turned off the boost controller thinking it might not be set right as was set up with a fucked clutch.. Car boosting as low as it can, bout 1bar and still does it..

 

Car fully bpued with ik24s.. Might change the plugs anyway to see..

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Did u find the cause ash? Fitted that clutch and can floor it for the first time, get really slight hesitation then clears then comes back then clears, can hardly feelnit but it's there, if I lift the boost it's worse.. Turned off the boost controller thinking it might not be set right as was set up with a $#@!ed clutch.. Car boosting as low as it can, bout 1bar and still does it..

 

Car fully bpued with ik24s.. Might change the plugs anyway to see..

 

Sorry mate, only just seen this. Erm, I dont even remember posting this, I dont even the remember the symptons that I have posted about lol ???

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