weird idle in cammed 98 camaro
weird idle in cammed 98 camaro ok so on going idle problem first the tps sensor went bad wouldnt start bought new one its start! had it running pretty good open headers then out of nowhere it starts going from 1000rpms to 2000rms just random an does it off an on what else is wrong this the only problem i have wtf. only stuff that anit hooked up are rear 02s cause need y pipe but when hooked up did same but i have rear 02 delete an i also have the evap on fast 90mm off is that why? its just the random high idle then back down myb iac? an i also gota re adjusting my screw pin on my fast 90mm tb
maybe a vacuum leak?? need to start spraying around the intake with starting fluid and anywhere air could get in behind the throttle blade and if the car tries to die then you found a leak.
My ta did something similar and it turrned out to be the Maf itself....idle kept jumping up and down...unplugged maf and had consistent idle....plug it backedv up...same story...bought another one and never looked back....could buy some maf cleaner and see if that helps
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Verdad Gallardo If a car is running lean it would be the exact opposite of rich like if it was backfiring and what not but a few other things can cause popping I'm sure but obviously u said its running rich ....I'm not real sure what it would be but I'd start cheap and buy some Maf sensor cleaner....let it dry for at least 15 mind and put the Maf back on and see if that helps at all
i will have to look it looks the exact same an im also gonna look for vacum leak also would the hose from valve cover to tb cause this but i also hav tape on the hole on tb untill i can find the hose
I don't think it would cause the idle to ramp...normally when a car is having problems holding vacuum it will just idle a little higher to create more vacuum depending on size of leak....most of the time u can hear if its sucking air from somewhere it shouldn't be....now I'm not saying its definitely the maf but due to me having a similar situation that would be my guess.....is it throwing any codes?
With that said I would definitely still check for leaks like stroked nova suggested
With that said I would definitely still check for leaks like stroked nova suggested
I put the gto maf on runs lil better today put maf on filter unplugged iac an ran better no engine light then I reset tps light came on didnt wanna start so I redid it an plugged iac on it started but light stayed on so then I unplugged iac reset tps again an I put on the evap hose behind tb runs better I think engine light on again an I still have it open header no rear 02s hooked up so that might Be the idle jump after all this today it jumps from 1000 to 1500 still has a lil pop no crackling
An as for the PVC hose in back I have gm performance valve covers an it runs from driver side across to my catch can then into intake an there's a hose from valve cover to tb but I don't have that hose so I blocked it off Myb that's y it's running this way?
video with full exhaust when it was running pretty good but almost dieing this was froma month ago http://www.youtube.com/watch?v=SURB2...G4286bN42jxcP8
Couldn't watch second video....how I checked my maf is had it running plugged up....ran like crap...unplugged connector...idle stopped jumping plugged back up car died but Idk if they always die when u plug it in while running but every time it was plugged in it ran terrible and every time it wasn't the idle was consistent but if u say it ran better with a different one that could be part of the problem but I would definitely get the hose first and see what it does as its obviously the cheaper route