transmaro93

iTrader: (4)

well tried to fire my car today for the first time since the rebuild.... had some trouble getting it going at first but giving it some gas while cranking got her going... but she wont idle very well... after it runs for a few it starts to idle but only at like 500 rpm (pcmforless tune is sopposed to be set around 900) we adjusted the TPS sensor and got it around .65 i think .67 is desired... i mean everything is new on this car as far as engine goes.... its running on ltcc also... but if i hold the idle with the throttle it holds... runs a little rough but its my first cammed car so this might be normal.... anybody have any imput on the subject... could it just be the pcm has to learn and run for a while... is there somthing else that im not doing... thanks for any help... ask questions is needed...

Wicked94Z

iTrader: (26)

specs on the motor?

transmaro93

iTrader: (4)

lt1 383 stoker, compstar rotating assem srp pistons (flat top), 200cc trickflow cnced heads, custom grind comp cams 236/242 580intake 541exhaust 110lsa, stock ported intake manifold...some things that may affect it if you or anybody wants to chime in on soem of these... trying to run it open headers (maybe o2 sensors are reading wrong?), i have o2 sims in the rear o2s but the pcm was tuned for rear o2 with out cats... maybe those are reading bad... im on my stock iac that seemed ok when i swapped it out to the 58mm... it just doesnt idle well at all.... i almost think its missfiring but again its so hard to tell with the cam... so im gonna do the only arc trick on the plug wires to see if every cyl is firing... or my ltcc harnesss is f-ed up and i got a coil wire crossed somewhere..

Wicked94Z

iTrader: (26)

you might have to crack the throttle blades, you need to take a look at your iac counts. o2s dont do anything at a cold startup so it rules that out. try disconnecting your MAF and see how it does.

transmaro93

iTrader: (4)

i think my iac counts on the scanner were somthing like 104... i dont know what they are sopposed to be at.... ill try disonecting the maf...

transmaro93

iTrader: (4)

disconnected maf sensor and it ran even worse... i could barely hold an idle with the throttle... i smell an awful amound of fuel though im thinking dead cyl maybe...

red-_-z28

if you smelt that fuel when the MAF was disconnected then that okay, that the computer just trying to get the proper Gas/Air readings, my smelt that way too..

transmaro93

iTrader: (4)

ok well checked spark... have spark going to all cyl... still wont idle... im stumped...

transmaro93

iTrader: (4)

i did the iac reset and it didnt do much... i just got it to idle outside around 750 for a while... but then dropped to 500 and eventually died... anybody think the gas can be bad... last fresh gas to be added was in july of this year... i put a bottle of dry gas in before i tried to start it... i dont know enough about gas to say if its bad or not... if so ill pull the line and hotwire the pump to drain it... i have spark to all cyl so ltcc is working.

transmaro93

iTrader: (4)

also do i have to keep the batt connected for it to hold the tune... iv been disconnecting the batt everynight just incase becuase everything is fresh and some things are newly wired and just playing it safe for fire safety... should i just leave that connected could that be my problem that its trying relearn everytime...? i havent had it running for than a minute or 2 does it need longer than that to learn itself??

RamAir95TA

iTrader: (2)

Sounds like you may have a plug wire crossed or a boot not pushed on completely. Check, double-check, and re-check your wires.

transmaro93

iTrader: (4)

well i know i dont have a plug wire crossed, only thing that can be crossed is the ltcc harness and that is labeled for cyl... as for the boots im pretty sure they are hooked up good... as you know its kind of hard to push them on, but im almost positive they are all on but like you said ill triple check them..

sweetbmxrider

iTrader: (13)

yeah its like the ls1 style now with the coils above each cyl on the valve covers. it seemed to run good in the mid rpms but won't hold an idle. i almost think the tune is wrong for the idle.

ADM

Hey buddy, did you log your car and send it to your tuner?

When I first started up my LT1, it would idle but if the MAF was connected, it would just die. I never get a cold idle even after my tune (neither did I get one before), and its because my IAC needs replacing.

I had my initial tune, it drove better, but traffic driving was difficult. Sent a log, got another tune back, improved driving. Send another log, and got another adjustment, and it runs great now. You need to be patient. My LT1 is also my 1st cammed car.

I need to replace my IAC and get some new connectors for the coil and ICM, and then get a final tune to get my car to start up without having to encourage it with some throttle.

kalebm22

iTrader: (2)

i am having the same problem after my Le2 setup. i am pnly pulling 3 to 5 inchs of vacuum and then it dies and wont idle.. im thinking my valves need to be readjusted. but im not sure.

transmaro93

iTrader: (4)

any of you other guys with aftermarket 58mm TB's have to drill a hole for the IAC to work better... i was just sent a link from a guy on local board explaining this... anybody else do this?

Badazz 97 TA

iTrader: (18)

what brand of throttle body? i didnt have to do it for my performance parts 58mm.

transmaro93

iTrader: (4)

its a summit brand which im almost postive is just a debadge trickflow peice...

Shownomercy

iTrader: (1)

Prob not running cause you don't have cats.

sweetbmxrider

iTrader: (13)

hahaha your such a dick matt