My camaro 5.7 tpi won't start. I wrote another thread yesterday about my car idling rough while coming to a stop. It's 1:00am right now, so yesterday morning I took my wife to work a few hours later when car cooled down I whent to check the firing order, everything was fine there. I cleaned out the IAC and it was very dirty so I was hopping that would fix my idling problem, but when I put everything together to go for a test drive it wouldn't turn on. I checked all wires I moved and made sure all sensors I messed with were good, but still it wouldn't turn on.
Things I did after it wouldn't turn on; I replaced fuel filter and nothing, I installed a new fuel pump and nothing. The only way it stays on is if I idle it with the gas pedal, but it doesn't idle on it's own I have to give it gas. I dont understand whats the problem and hopping my friends here on this forum could help me out. Any suggestions will be greatly appreciated. Thanks in advance : )

 

Start by pulling the codes and report back any you find

https://www.thirdgen.org/forums/tech...s-dumbies.html

 

The SEL light is not on, but scanned it anyway and code 36 comes out.

 

Have you adjusted your idle position sensor?

 

I'm thinking you may have two problems. The code 36 and low fuel pressure (wrong pump) or bad injectors. I would start with solving the code 36 unless this is a old stored code.
https://www.thirdgen.org/forums/tech...code-36-a.html

 

36 is an old stored code. I'm thinking it might be injectors. Still not sure. I would appreciate any other advise buddy thanks.

 

The tps? Yes I have adjusted it.

 

Sorry I didn't read carefully enough. If the iac wasn't sent in far enough it can be damaged and destroyed apron reassembly . Koeo with with the iac commanded in can you hear it bottoming out and ratcheting ?

 

It was a damaged IAC, turned on right away after I installed the new one. But I still have that rough idle when I come to a stop and my foot is on the brake and car is on drive. But when I shift to neutral it calms down alot but could still here a misfire.

 

Start with your tuneup items, cap rotor condition , ohm your spark plug wires, spark plug condition to narrow the miss down to a cylinder.

 

Changed cap, rotor, spark plugs gapt at 35, coil, spark plug wires. Do you think the IAC could had messed with my timing?

 

The iac job is to control idle speed and to act as a engine brake on deceleration. To determine what cylinder has the miss you can unplug each injector with the engine running.
If you can narrow it down to one cylinder you have eliminated the ignition system so its either a mechanical issue low compression burnt valve. Or a fuel related issue a lean miss caused bye a injector not spraying properly or its filter baskets is severely restricted. Or that cylinder is running rich caused bye a leaky injector.

 

What am I looking for when I unplug each injector?

How would I check if A injector is not spraying properly?

 

You say the engine is running bad.

If you disconnect a good injector it will run worse.
If you disconnect a bad injector nothing will change

 

I finally got to check the injectors but couldn't really tell difference, maybe the 7th one had a mis. I put some seafoam and vibration whent away for the rest of gas I had in tank, I noticed when I was running out it would start to vibrate again so im thinking it could be injectors. Gonna try another seafoam, what do you think?

 

how did you check the injectors? Did you check the ohm? Do it when they are hot and cold