uLs1a

iTrader: (22)

Well I just finished up my heads/cam swap after starting it 2 and half months ago. When I got her started, she was running great but notice my temp really wasnt moving. Looking around the car I saw my drivers side cat and piping glowing bright orange. I know this is not normal, any ideas?

uLs1a

iTrader: (22)

A little background. I tried to start it and the volts on my battery were low, so I kept on trying to start it just to see if it would catch and eventually fire, which it did not. I took it to Kragen and they tested it and put charged it up. I got back and put it back in the car and it took a few times of trying to start it before it eventually started. When it started it felt acting like it was going to die so I gave it some gas and I heard a loud backfire. Im thinking that might have casue damage to my cat? After it started getting fuel it was idling fine with no issues.

WS6 Rampage

iTrader: (3)

Do
You smell more exhaust fumes ever since this happened?

trans_am7935

iTrader: (15)

did you ever get the car tuned after the Heads/cam swap?

O2Form

Glowing red cat=rich, might have a leaking injector etc.

uLs1a

iTrader: (22)

No, that was the first time I started the car since the swap.

uLs1a

iTrader: (22)

Yes I do

uLs1a

iTrader: (22)

I started it today and tried to drive it just around my apartment complex and I wasnt even two feet out of my parking spot before it stalled on me. I started it again, back it into my parking spot and turned it off, but the ignition wouldnt turn all the way off, the two lines were maybe an 1/8th in apart and I had to force turn it to get the key out and now when I put the key in it wont turn

AnnivSS

Its either running really really rich or you have a clogged up cat. Is it a factory cat?

uLs1a

iTrader: (22)

Yeah its stock exhaust manifold and cats. I was gonna wait till this summer to do LTs after I smogged. I did get a code though P1635.

I went with stock LS2 243 heads
EPS 222/226 .596/.598 114

davidws6

iTrader: (36)

If your key won't turn in the ignition switch, the cylinder prolly needs replaced.

Not unless somehow your park/neutral cable got out of adjustment somehow,

If you r car is an Automatic ? If it is an auto, try pushing up the shifter handle a little, maybe the key will turn easier then.

uLs1a

iTrader: (22)

Yes it is an auto

omarrakeen

iTrader: (2)

yea what he said. i had the same thing once, go under the car and try to move the cable of the auto shifter..wt a bad luck ur having lol

senicalj4579

iTrader: (41)

Iv only seen a cat glowing orange one time before. It was on an Audi, a4 I think. Anyway, turns out those cars have problems with coil packs and a bad coilpack was the cause. Could it be a coil pack on our cars? hmmmm

AnnivSS

With a bad coilpack youd more than likely be throwing misfire codes.

O2Form

You prolly have a spark plug wire off, it causes that cylinder to misfire and loads the cat with fuel.

Undertow74

iTrader: (45)

well, since you said you did a H/C swap and still have stock exhaust on the car, my first guess is that You are dumping way to much fuel and running too rich, that is usually the #1 cause of a cat getting that hot. Now like stated earlier, could be a clogged cat also. But since you said it was not doing that before the H/C swap most likely your fuel trims. Hook it up to a scan tool and read your data streams and see where your A/F ratios are at.

1998Z28LOADED

Spray a little WD40 in the key hole and wiggle the key in and out like your having sex with it. Seriously it will work. These GM cylinders get jammed up when they get older and haven't been used in awhile.

uLs1a

iTrader: (22)

Im gonna take em off and check em all out. Im also gonna take that cat off and see if its clogged and if it is, try and gut it

99Bluz28

iTrader: (35)

if you got the cat glowing orange it's most like melted inside, so you'll need a new cat.