Car is stalling, and also an oil pressure issue.

**TransAmcoupe98** · 10-09-2007, 02:58 PM

I just put a 222/224 cam along with hardened parts etc...My car will start but only when cold and when it runs for about 15 seconds it will stall. After that you have to keep throttle applied. I think it just needs to be tuned, since I haven't had it dialed in yet. But a more serious issue is I am getting low oil pressure. At idle right before it dies, it is at 20-25 psi, but when you get it up to about 1500rpm, it goes to 38 psi, then when more throttle applied, it continues to increase. I have the Texas-speed LS6 ported oil-pump. could this be a problem? Could it be in the tuning, A bad oil sending unit, or is the pump a dud. The Oil pressure doesn't dance around but it does move a significant bit when minor throttle is applied. Any thoughts???

**cam99** · 10-09-2007, 04:51 PM

Sounds like you need a tune.
The oil pressure is still within allowable levels.

**98formy** · 10-10-2007, 05:38 AM

Originally Posted by cam99

Sounds like you need a tune.
The oil pressure is still within allowable levels.

Did you use the new oil pickup seal? I know if it is not seated properly, it can leak some pressure around it. I also agree with cam, you need a tune.

**TransAmcoupe98** · 10-10-2007, 12:21 PM

That oil pressure still scares me. It should be putting out psi levels well over stock. I dont think its the oil sending unit because it is not dancing and of course it isnt broken where I can visibly see it. Another guy said I will also need a crank sensor learn when it gets tuned because it will throw misfire codes...Is this true??

**sic2001** · 01-25-2008, 08:04 PM

did you ever figure out what this was? My car is doing the exact same thing after the cam swap.

**2-bowties&abird** · 01-26-2008, 05:20 AM

Originally Posted by sic2001

did you ever figure out what this was? My car is doing the exact same thing after the cam swap.

mine is too, i'm interested in knowing what the hell is going on, i have almost the exact same thing going on. i'm throwing misire codes as well as some o2 codes and i had it tuned. oh well back to the shop.

**99Ls1fever** · 01-26-2008, 08:24 AM

Originally Posted by TransAmcoupe98

I just put a 222/224 cam along with hardened parts etc...My car will start but only when cold and when it runs for about 15 seconds it will stall. After that you have to keep throttle applied. I think it just needs to be tuned, since I haven't had it dialed in yet. But a more serious issue is I am getting low oil pressure. At idle right before it dies, it is at 20-25 psi, but when you get it up to about 1500rpm, it goes to 38 psi, then when more throttle applied, it continues to increase. I have the Texas-speed LS6 ported oil-pump. could this be a problem? Could it be in the tuning, A bad oil sending unit, or is the pump a dud. The Oil pressure doesn't dance around but it does move a significant bit when minor throttle is applied. Any thoughts???

sounds like you have a timing issue, Tune is probabley the best idea...

**2-bowties&abird** · 01-26-2008, 10:57 AM

mine were p0155-02 heater circuit-b2s1
p0300-random cylinder misfire
p1153-h02sb2s1 insufficient switching
these are the codes my car is throwing

**99Ls1fever** · 01-26-2008, 05:27 PM

Originally Posted by 2-bowties&abird

mine were p0155-02 heater circuit-b2s1
p0300-random cylinder misfire
p1153-h02sb2s1 insufficient switching
these are the codes my car is throwing

That means your timing is off...

**tylerdurden1** · 01-26-2008, 07:30 PM

I would have to agree with 98formy on the oil pump seal. Did you install a double roller chain? I would not drive it around if timming is off. Get it scanned to find timming first. When I installed my G5X2 112 cam in my stock engine it started up find and I held my foot on the gas pedal for and idle relearn, but after that it would idle fine at any temp.
I would just tear down the front of the motor and verify with new oil pump o-ring.
Put the motor on top dead center and the dots should line up. The cam gear at 12' and the crank at 6'.
You could also adjust your tps sensor by hogging the holes alittle. That is if everything checks out ok. There alot of varibles here.

**99Ls1fever** · 01-26-2008, 09:38 PM

Just be careful, its not worth destroying your engine. Find a good tune shope you trust and call them and tell them what you are experiancing and get their imput...

**Eddie 70** · 01-27-2008, 07:37 AM

Another thing about double roller timing chains, and I know this may be elementary, is to make sure the spacers that come in the kit are put in correctly. One side can be put in wrong and the oil flow will not be all going out of the pump into the motor where needed.

I also would check the o-ring as already mentioned. If I had put in a new o-ring the first time, I probably would not have had the problems we encountered on our cam swap.