Hellow folks, i just bought a zx 300 had the believe that its not as powerful as i expected it to be, so i took it for someone to have alook at it for me.He ran a diagnostic test for me and said that it is not pushing the right amount of bhp, its doing about 190bhp at the moment and it should do about 220bhp,he also said that might be due to beceuse of a knock sensor so it thats the case how much will it cost to change the sensor ? and what else might it to lost soo much power? :headvswal

I'm guessing it's a NA (non-turbo)

 

How was it tested? Was that 190bhp at the wheels or crank?

 

Age / wear can casue a power loss. Or basic service things like the air filter, plugs etc.

It was tested at the rear,didnt know that can cause powe lost

i mean at the weels

I think the 220-230bhp is a crank figure for a new car.

 

190bhp at the wheels isn't bad considering it's probably about 15 years old.

Okay cool! so whats a knock sensor then and do i need to change it?

I heard its a big job!!

its a engine out job for the knock sensor

 

http://zhome.com/ZCMnL/PICS/detonationSensor/detonationSensor.html

 

Look here for a veritible bible of z knowledge

 

http://www.aus300zx.com/tech/a-z.html

its a engine out job for the knock sensor

 

http://zhome.com/ZCMnL/PICS/detonationSensor/detonationSensor.html

 

Look here for a veritible bible of z knowledge

 

http://www.aus300zx.com/tech/a-z.html

 

hey!!! thank you very much.cheers mate :dance:

hey!!! thank you very much.cheers mate :dance:

or you could by-pass it for 20 pence :)

edit--just seen its a n/a, wrong advice :headvswal

so i see that you from penzance, if you fancy hooking up some time dude that will be cool..i live in hayle...cheers mate..

Yeah mate no probs with hooking up , just let me know when , I will bring datascan with me and we will see if your car has any real probs, who did the diagnostic for you as the error codes would of shown a knock sensor fault if he was using datascan or conzult.

190bhp @ wheels is ok, therefore I wouldn't go taking the engine out.

Another one from Cornwall. I think we are definately going to have to arrange a meet. Anyone up for one this month? Nothing special, just an evening get together in a local pub or something. Get back from the Bulldog Bash next Monday so will give everyone a call if they are up for it. I think there must be about 5 or 6 of us down here now.

yeah im up for that shelton

maybe post in the meets section

Knock sensor is NOT engine out, but it is a fair amount of work. Upper and lower Plenums needs to come off. 4-6 hours work at a guess.

from what ive heard its easier to take the engine out than do it in situ, would it be easier to just resite a good one than do the old one?

Just to give you my penneth for what it's worth......I'm certainly no expert.

I've had a N/A manual for just a few weeks and it has seemed sluggish to me for a 3000cc car. I took it in to ZTech today and Greg looked it over, checked the timing and said it was retarded (a bit like me) and reset it by 4 degrees. The performance improvement was significant and I am now a happy Zedster.......just in case it helps.

 

Dave

Yeah mate that will be good! am always off work on monday nite and tuesdays and also sundays.i had the rechards brothers in redruth, strange enough!! he didnt say that they saw it on his machine and you are the second person said that to me,If the knock sensor in playing, he should be able to see it on the machine...It will be great if you can have a look for...cool

It is definately sluggish mate! thanks for the tip..cheers mate!

good to know that...cheers mate

yeah am up for tht too.. mate..!!let us know when

Yeah mate no probs with hooking up , just let me know when , I will bring datascan with me and we will see if your car has any real probs, who did the diagnostic for you as the error codes would of shown a knock sensor fault if he was using datascan or conzult.

 

Hi mate,how are yo? will definately like to hook up if thats okay with you and maybe you can have alook at my car if you want to, so just ley me know when it is okay for you, i dont believe that it is performing properly at all. :confused: cheers mate

from what ive heard its easier to take the engine out than do it in situ, would it be easier to just resite a good one than do the old one?

was nice to meet you you today, very fast car you have you have there anyway will catch up soon. take care