Stalling issues - Code 31 (Camshaft Position Sensor)

[MuRCieLaGo]

Oh and quick updates...

-SES light doesn't come on if I put my key on for 5 seconds before starting the engine.

-Runs perfect when cold.

-WOT at Full Power is perfect at all time (I don't think the LT5 is supposed to be faster).

[-=Jeff=-]

Did you check to see if the SES bulb is there and not removed?

if you have no active SES light, when are you seeing the stalling?

[MuRCieLaGo]

Hi Jeff,

The SES lights up sometimes, the bulb is there and works fine. I think it lights up easier if I start the engine without leaving the key on for a few seconds. On or off, it has no effect on my stalling issue.

[-=Jeff=-]

How did you check codes? simple way is a paper clip across ALDL A&B turn the key to on.. SES will flash each code 3 times.. Code 12 is normal.

There is another way to get it on the LCD display and it will show current and history codes.

Okay Stalling

When does it stall? slowing down? cruising along? A/C On or off?

I have an intermittent stall and i know it is IAC based and I need to adjust the Minimum Air to get it to run a bit better, I will do that this winter.. right now that is my main gripe, every once in a while the car just stalls

[MuRCieLaGo]

Codes have been checked with "the big expensive scanner", when I was there with the seller.

Should I retrieve the codes again?

A/C is always off. It stalls at the red lights. It has a hard time finding its idle but when it finds it, it is OK.

Seller told me IAC has been cleaned not long ago. To me it sounded like it needs an adjustement, but everybody agree I should look into the injectors, even if they have been changed in the last year (not even 1,000 miles).

[MuRCieLaGo]

Since yesterday, here is what I've been told to test. I'm trying to pinpoint what I should look into first. I don't like to look at that list.

-Cam sensor - Tested, working fine
-Injectors
-Spark plugs
-Spark plugs wires
-Coil packs
-Fuel pumps
-IAC
-VSS
-Map sensor
-PCV valve
-TPS
-ECM
-Fuel pressure regulator

These guys on this thread have the same problem I got, and it seems they never managed to fix it...

http://www.corvetteforum.com/forums/...-stalling.html

[We Gone]

All the items you listed are fairly easy to check.

I would start with IAC check and reset, TPS easy check with a meter, Map, fuel pressure issues easy just need a FP gauge.

Most if not all this stuff can be found in Dynomite's sticky

This may be a bit out there but what chip is in the car?

http://www.zr1specialist.com/HAT%20W...librations.htm

Also slow down and get the FSM.

[MuRCieLaGo]

Originally Posted by We Gone

All the items you listed are fairly easy to check.

I would start with IAC check and reset, TPS easy check with a meter, Map, fuel pressure issues easy just need a FP gauge.

Most if not all this stuff can be found in Dynomite's sticky

This may be a bit out there but what chip is in the car?

http://www.zr1specialist.com/HAT%20W...librations.htm

Also slow down and get the FSM.

I'm sorry if I feel a bit lost, I've pretty much only worked on rotary engines in the past.

There's no chip in the car, but that will probably be the first mod (after I fix ALL the problems, of course).

Do you think this manual is OK? Not sure if it has info on ZR-1s.

http://www.ebay.ca/itm/311455908176?...%3AMEBIDX%3AIT

I'm actually searching hard on how to test the IAC. One thing at a time.

Thanks We_Gone for your help here and via PM!

[-=Jeff=-]

Yes that Manual is correct and what I use

[MuRCieLaGo]

Originally Posted by -=Jeff=-

Yes that Manual is correct and what I use

Thanks! Will buy it then.

Do you think Dynomite's ALDL Code reader is a must to read codes quickly? It seems to be pretty awesome.