problems with idle after cam install and tune

[Dijm8]

hey guys

just got my car back today after installing a cam package

the cam i got is a 226/231 .542

after a few dyno runs n tuning i only managed to make 262.7rwkw running a stock t/b and manifold....

now i after the tuning the car im still having problems @ idle....as it keeps stalling on me, when selecting gears u gotta keep the foot on the pedel to keep it going...even when comin to a stop at the lights it just stalls

now i havent put a high stall in yet...but ppl have said that it wont affect the idle then others say it will

now im kinda confuzed so i thought id come to you guys :)

oh and also i have no brakes... when goin under 20kms u gotta put the peddle the the floor to stop...tuner says its cause of the low vaccum that the idle is causing??

is this all the tuners fault? shudnt he be able to get the idle correct without the high stall or does he need it to get it correct

cheerz guys

[gezz]

i would say ya need a high stall

temporaley drill a small hole in the throttle blade and turn the idle up by ajusting the stop screw see if this helps dont worry bout the hole in throtle ya can always solder it up later with solder iron

[KeenGolfer]

Take it back to your tuner and take them for a drive and show them all the problems and ask them to fix it.

[TAKEITEZ]

it needs to be fixed... and it should be fixed for free...

you didn't ask for a car that stalls at traffic lights, won't idle without needing to be pedalled, and just generally behaves like a dog...

a stall might help by making the engine not labour as hard at idle due to it being a little more lose... but i'd say that if you went down to a 9.5" dia one you'd find if its stalling now it'll be worse then, specially when you are on the gas then shut it down straight away... the car won't catch the revs as they come down and it'll be too slow to react once it gets close to idle speed, then it'll just shut off...

get it fixed for free, or take it to someone else who knows better what they're doing...

[macca33]

Yep, I'd say if they cannot fix it, then you need to see someone who can.

Cheers and good luck,

Macca

[fastestls7]

thats bullshit. take it back to the orig tuner. if they dont/wont/cant fix it take it someone else like STREETUNA or KPM. They may be simpathetic of yo9ur dilema and help you out with a cheap tweak $200/$300.

[BLACKVE]

Sounds like pretty poor service there wouldn't be very happy:vpo:

If they can't tune it right take it else were(forum sponsors) Ls 1 EDIT or ENHANCED AUTO for good results, and ask for a little $$$$ back for the hassle

Hope it works out

Cheers Paul

[whitels1ss]

temporaley drill a small hole in the throttle blade and turn the idle up by ajusting the stop screw see if this helps dont worry bout the hole in throtle ya can always solder it up later with solder iron

That is a joke.....??? :rofl:

Get the tuner you paid to fix it, if he can't take it to someone who can like Street Tuna.
By the way, who is the original tuner?

[Grommz]

I had similar idle issues with mine when the cam first went in but it was sorted out by the tuner..


swingtan :bow:

[Dijm8]

cheerz for the comments guys....i got it tuned at southern hi tech dyno )near melrose park for those guys in S.A) will be taking it bk to the engine builder l8er 2day and see what he thinks on wot to do....if i take it bk to the same tuner or get a new 1.

will be gettin sum prices on high stalls 2day... but yeh i didnt think i wud need a stall to get the idle right ay

[DaveHAT]

A CAM that size is going to be pushing the stock stall pretty hard. The limit on a stock stall would generally be around the 220/220 cam size mark so a CAM the size of that would probably be causing noticable hunting with the stock stall ... and that'd be if it's tuned WELL.

The issues you describe do sound tune related and I can't honestly believe that they let the car out of the workshop knowing that the brakes were suspect and it idles like a busted arse.

Pretty piss poor. If they spin you BS or say it can't be fixed, demand your money back and go to someone like Enhanced Automotive and get it sorted.

You don't need to put up with drivability like that in this day and age.

Good luck with it :goodjob:

[smokiebbear]

turn the idle up by ajusting the stop screw

Very good advice. This will fix the problem straight away. You are having issues with the "vacumn" and the "throttle adjustment sensor" cant keep up as the amount of vacumn is too great. Therefore adjusting the butterfly open a smidge it will be getting more air and will work fine and not stall at all. I had this problem with mine but i have a 230's cam with 600 lift so you will not need to adjust yours as far open as i did. This will make your car idle around 1400rpm and you will notice the revs will surge slightly between gear changes (ie when selecting D or R) but that is normal as you will have increased the amount of air the engine will take in at idle greatly. Then take it back for a retune but leave the throttle body as you have adjusted it and your tuner should be able to adjust the tune and get your car to idle around 750-850rpm's and no issues with the car stalling etc. 100% confident this will work otherwise i will eat my hat! When doing this make sure you disconnect the sensor on the right hand side of the butterfly for 30 seconds and key on the ignition but do not start it (this will enable to pcm to relearn the new idle settings for the throttle position). You will need TORX T15 size { http://en.wikipedia.org/wiki/Torx }to adjust the screw on the bottom left (as your looking at the engine from the front of the car). Anyhow hope this helps :D

Please note i have no idea what the bloody throttle sensor thingy is actually called :D

[gezz]

temporaley drill a small hole in the throttle blade and turn the idle up by ajusting the stop screw see if this helps dont worry bout the hole in throtle ya can always solder it up later with solder iron






That is a joke.....??? :rofl:

Get the tuner you paid to fix it, if he can't take it to someone who can like Street Tuna.
By the way, who is the original tuner?

NOTICE I SAID TEMPORY SO THE GUY CAN ACTUALLY DRIVE THE CAR

[Dijm8]

cheerz for the help guys....im goin bk the engine builder to talk about the tune n what to do....(if to go bk to him or not) goin ther in about 30 mins or so

[Daves8]

i recently had a 224/228 110lsa cam installed on my auto with standard stall, and it idles well, unless first start up in morning, or on full lock in gear when parking, but that is expected.....

Get the tuner to redo it!

Has a thread been posted on the TB adjustment before?

[smokiebbear]

The idle screw is in the very middle of the pic, with the blue dot above it. You will need to adjust it from underneath with the following tools ....

http://i191.photobucket.com/albums/z93/smokiebbear/P1020563.jpg

Here is what you need to adjust. A T15 Torx and something to grip it with. You will need to put the T15 on a 45 degree angle slanted back to get in and adjust it

http://i191.photobucket.com/albums/z93/smokiebbear/P1020564.jpg

After you have disconnect the idle for 30 seconds and keyed on your idle will relearn to this. Slightly higher than it should be maybe but a quick retune will see it come down another 50-100rpms :D

http://i191.photobucket.com/albums/z93/smokiebbear/P1020566.jpg

Hope this helps :D

This will stop your car stalling when cold and all the other issues you have said you are having with it!

[Dijm8]

yeh cheerz m8....got the engine builder to play with the screw...but sum reason he cudnt get it to idle right....made it worse at starters...then told him to put it bk.. then with further adjustment still cudnt get it right....

i gotta say these guys are fukn usless..i gotta find sum1 new

[smokiebbear]

Did he disconnect the TPS and key on for 30 seconds then reconnect prior to start up? If you don't do this then i gather the engine will try and run with settings that wont work. When this is done properly it will idle slightly higher on startup yes, may even idle up to 1400rpm but give it 20-30 seconds and it will relearn to idle, you will notice its doing this as the revs will drop ever so slowly as its happening until it comes back down to about 850rpm. In all fairness the guy thats building/tuning your engine sounds like he has NFI :confused: The screw should only need a few turns per each test until you find it idles as it should. It shouldnt need the tune adjusted until you get this part right first. This will solve your problems you just need to persist until you get it right or as close to as possible. I have adjusted mine probably 8-10 times over 4 seperate occasions in the last month and today when i gave it a tinker i think got it spot on:D

[Dijm8]

well no he didnt disconnect it...im surprized he didnt knw that...it shows he knws fuk all lol....i'll let him knw wen i talk to him next

thanks m8 for that

[smokiebbear]

Tell him .....

Step 1 - Adjust the screw so that it opens up the butterfly (try a few turns at a time)

Step 2 - Disconnect the TPS (bottom one as there are two connections close by)

Step 3 - Whilst disconnected key on for 30 seconds

Step 4 - Reconnect the TPS

Step 5 - Start the car and it will then relearn idle settings based on what you have done

Step 6 - If its still not working go back to step 1

This will mean your engine is getting more air at all time and will stop it stalling and all that crap. To be honest my tuner is great at what he does and this had him stumped for a whole day. He ended up calling me the next day and said he can't believe how simple it was and that he couldn't work it out. As soon as we did this we were in business! What made him realise was the following day he was working on another cammed car similar to mine and he loaded in the my tune as a base and it idled perfectly. He couldn't work out why it wasn't working in my car. Until he noticed the butterfly had an extra hole drilled in it. He remembered that is how some people adjust them to overcome the vacumn issue and lack of air the engine is getting at idle. The other way is the way he suggested to myself and the way i'm suggesting to you as this does not involve drilling holes that don't need to be drilled.

[Dijm8]

thank you very much m8....when i get the chance to see him i'll pass this on :)