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ls1 wont throttle on
started the cobra on the weekend to clean out the garage
it wont idle ,then it would then it wouldn't run other than idle it only back fires at full throttle then dies ,but restarts straight away as I did change the battery out & left it out for a couple of days so is it learning again or has the computer gone in to limp mod it has the standard computer for the motor or do I needed to find someone with tec 2 to check it out any help will be great rob :CRY::CRY::CRY: |
It's a Holden that's how they run
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Nice try Dave ;) Where is your first drive video?? :eek: Tony |
Rob, I often disconnect my battery and it starts and runs perfectly after reconnecting.
My L98 originally ran rough and we traced it to a misfire due to a badly wired injector plug. This showed up as an error code when it was scanned. So that's where I'd be starting - check for fault codes. |
Have you disconnected anything?
MAF or TPS sensor? If not, power off the PCM and try again. It might just be feeling unloved :) |
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My money is on the MAF sensor. Check the plug connection, make sure the MAF is seated properly and also clean the MAF. See if that helps.
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Rob, I would probably watch Welcome to The NEW EricTheCarGuy! - Eric The Car Guy- Stay Dirty! and look at rough idle for your issues. He goes through everything step by step. Perhaps not 100% accurate but he seems very logically in his approach and at least explains things in detail i.e. "I do this because of this" at limits his opinion.
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well to day I pulled every sensor & connector off , cleaned &refitted ...found a almost broken wire at the connector cleaned out the throttle body & idle step motor
now we have idle GAV ..cleaned all plugs with contact cleaner seams ok PAINTWORKS cleaned the mafs with carbie / throttle body cleaner ..so tomorrow ill take it for a run up the street PIGSEAR did clean all then watched his video it now idling SO NOW JUST TO GIVE IT A RUN & see what happens ?????????? thanks for all the in put ROB |
How did it go?
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he is still standing on his head
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BOX HEAD its rained every day since I last posted
DAMAGE my head hurts fired it up & now have fuel smell & a white ish plume around it while running rob |
The white plume is probably hazy eyes from too much blood in your brain from standing on your head mate
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Rob that's great news. The car's not yet finished and it's already going supersonic. Impressive! Pilots have nothing on you... http://static.fjcdn.com/large/pictur...1a_3662198.jpg |
Rob that's great news. The car's not yet finished and it's already going supersonic. Impressive! Pilots have nothing on you...
Craig I wish but I found that I was turning the alternator to slow [ belt slipping ] the belt tensioner stripped its thread [tucker made so new one being made but now the alternator shows 16 amps out put then turn it off & restart & its back to 14 then 12 so alternator might have a regulator fault causing me problems going to get it tested tomorrow rob |
still have some issuesnow it seems to be over fueling
does anyone have a dbo11 scanner that I might borrow or buy as the repco / super cheap ones seam abit dear for them as $240 & I have seen them on ebay for less rob |
just an up date ... problem solved
took the cobra to POWER TORQUE PERFORMANCE brendale to see if it was a tune problem ,, well & behold it was a maf sensor at the back of the manifold that had no power so no signal rang the harness supplier , he explained that some harness that were done by his employees they switched the plugs on the blue side of the ecu plug 48should be in position 47 & a feed [orange ] 4amp was to be in 48 position so we did this & found that the sensor had 12 volts to it so it was buggered & replaced then refired up as if ti was just out of the box now dyno tuned & maffless as well yehhaa starts like a cobra should ,,, thanks to all .. now lane change test then rego cant wait till Wednesday at lakeside rob |
Rob, that is great news - its often the little things that cause these problems. (You'll luv the LS1 its a great unit) :-)
What sort of Rear Wheel KWs did you end up with? My stock unopened LS1 does 235RWKW Cheers Gregg |
Gregg did a just abit better but not much
yep haven't driven it much yet but cant wait till Wednesday for the lane & adrive around at lakeside raceway they did a power pull on it as well to 197km /h it did first run at 15.9 with maf & standard tune then mafless tune 13.9 this is done at idle to 197km/h as per 1/4mile run .iwas told |
awesome stuff, get some video from Lakeside!
I don't know what meth that dyno software is using, but with 230+rwkw in a Cobra you will pull a low 12 easy and if you can get traction then elevenses! |
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