Lack of power through 4000rpm
Lack of power through 4000rpm
Author
Discussion

seasider

Original Poster:

12,728 posts

277 months

Monday 24th November 2003
quotequote all
500 Serpentine....
As i hit 4000rpm the power drop off is very evident athough it will still rev all the way, it just stops kicking me in the ae

I'm sure it's not mechanical as in cam as no nasty noises and happened almost overnight.

I suspect:-
Coil... anyone know the Bosch part nr?
sensor...any clues which one?
Fueling/injection... i really hope not!!!

Podie

46,649 posts

303 months

Monday 24th November 2003
quotequote all
Might be running lean following your exhaust job... bit like mine was...

seasider

Original Poster:

12,728 posts

277 months

Monday 24th November 2003
quotequote all
Only started last week so i dont think it's related..
It really hits a barrier almost a misfire.

>> Edited by seasider on Monday 24th November 11:28

joospeed

4,473 posts

306 months

Monday 24th November 2003
quotequote all
Or your suspension is making the car so much more controlled that it just seems slower ??????

seasider

Original Poster:

12,728 posts

277 months

Monday 24th November 2003
quotequote all
joospeed said:
Or your suspension is making the car so much more controlled that it just seems slower ??????


Morning Joolz

Not on yet mate.... to busy/pd at the weekend...

Podie

46,649 posts

303 months

Monday 24th November 2003
quotequote all
If you need someone to kick you up the ar*e... then I'm happy to volunteer..

seasider

Original Poster:

12,728 posts

277 months

Monday 24th November 2003
quotequote all
Podie said:
If you need someone to kick you up the ar*e... then I'm happy to volunteer..


OI leave my thread alone ... well at least until i get a few ideas ;

N17 TVR

2,937 posts

299 months

Monday 24th November 2003
quotequote all
Maybe your Power Steering is draining power ?

Have you tried doing some weights and switching it off ?

HarryW

15,998 posts

297 months

Monday 24th November 2003
quotequote all
Could one of a thousand things, [guess mode on] could be the mechanical advance mechanism on the dizzy stuck[guess mode off] this would give similar symptoms, including a loss of power lower down that you've not noiticed yet, AIMHO
If its not simple then a quick run on the rollers will help if you are near a set and probaly cheaper in the long run than changing the engine piece-meal(sp?).

Harry

david beer

3,982 posts

295 months

Monday 24th November 2003
quotequote all
Mine had a real bad point at 4k, it was the tune resistor broken in two. I have a code reader so it was quite painless to find what was wrong, otherwise i would never of looked at it.

seasider

Original Poster:

12,728 posts

277 months

Monday 24th November 2003
quotequote all
N17 TVR said:
Maybe your Power Steering is draining power ?

Have you tried doing some weights and switching it off ?

Go away and play with your


david beer said:
Mine had a real bad point at 4k, it was the tune resistor broken in two. I have a code reader so it was quite painless to find what was wrong, otherwise i would never of looked at it.


Hi David... No Bible at work! whats a tune resistor.. you know how good i am when it comes to elec's ;

gerjo

1,627 posts

310 months

Monday 24th November 2003
quotequote all
I had the same problem after an engine out job. Took almost a year to find the problem: a worn cam. Strange as it happened almost overnight, but it was indeed the case. You can check by measuring the valve lift (should be somewhere around 12 mm). New cam and now it won't stop until well over 6.000 rpm.

Could also be: collapsed inlet hose, coil/sparks, timing advance changed.

seasider

Original Poster:

12,728 posts

277 months

Monday 24th November 2003
quotequote all
I can only hope it's a
gerjo said:
Could also be: collapsed inlet hose, coil/sparks, timing advance changed.

david beer

3,982 posts

295 months

Monday 24th November 2003
quotequote all
Hi Derek
the tune resistor is hanging around the ECU bundle of wires ! Its in a clear plastic cover, its colour coded and has just two wires to it. It tells the ECU, cat or not. Maybe the code reader is to be sent ?

seasider

Original Poster:

12,728 posts

277 months

Tuesday 25th November 2003
quotequote all
Many tks for all the useful suggestions Harry,David,Gerjo....

It was a badly connecting plug lead onto the dizzy cap...
Very painful to find as the it was only braking down when at considerable rev's and being wiggled about...

Strange that it was so bad at 4000rpm+!!!!



joospeed said:
Or your suspension is making the car so much more controlled that it just seems slower ??????



Feels so much quicker now i'd better get it on sooner rather than later!!! makes me wonder if it's been bad for sometime....



Podie said:
If you need someone to kick you up the ar*e... then I'm happy to volunteer..



Catch me if you can!!!!



N17 TVR said:
Maybe your Power Steering is draining power ?


Dont think the power steering uses 1.6 cylinders worth of power.... at least i now know what yours is like to drive ;


>> Edited by seasider on Tuesday 25th November 09:19

evo

3,462 posts

282 months

Tuesday 25th November 2003
quotequote all
I agree with what Podie said "Might be running lean following your exhaust job... bit like mine was..."

I've only had my Chim for a month now. Mine too has the rear cans chopped off,smells like it's running a bit rich and also has that lack of mid range pants down torque, or am I just getting used to it

N17 TVR

2,937 posts

299 months

Tuesday 25th November 2003
quotequote all
seasider said:


N17 TVR said:
Maybe your Power Steering is draining power ?




[quote=Seasider]Dont think the power steering uses 1.6 cylinders worth of power.... at least i now know what yours is like to drive ;


Oooohhhhh, you vicious bitch !


>> Edited by N17 TVR on Tuesday 25th November 10:51

Podie

46,649 posts

303 months

Tuesday 25th November 2003
quotequote all
N17 TVR said:

seasider said:



N17 TVR said:
Maybe your Power Steering is draining power ?





[quote=Seasider]Dont think the power steering uses 1.6 cylinders worth of power.... at least i now know what yours is like to drive ;



Oooohhhhh, you vicious bitch !


>> Edited by N17 TVR on Tuesday 25th November 10:51


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