Wrench Light!!

[Tuffnuts23]

I have a Moroso catch can on my car. It's been on for a few weeks. Yesterday, I'm coming down an on ramp to the expressway and my car goes into limp mode and throws a check engine light. I pulled over to the shoulder immediately and popped the hood with the car still running. I don't see anything obviously wrong, so I open the drain valve at the bottom of the catch can just for shits. No oil came out, but it was sucking air like crazy. I put my finger next to it and it sucked my finger right to drain pipe. Good thing all the hoses are push lock. I was able to disconnect the catch can and return the PCV system to stock in a couple minutes. Anybody have any idea what is going on here?

I just hooked up my SCT to check for codes, none found

 

[charba951]

Wrench light isn't the check engine light. If you got a wrench light, it has something to do with your electronic throttle body, at least that's what the owner's manual said lol

 

[csb85]

Yeah it has to do with the throttle body. I had it happen to me once, hit the rev limiter and the wrench light came on car went into limp mode. I thought i blew my motor at first. Pulled over popped the hood found nothing wrong. Turned the car off restarted it and it hasn't happened since.

 

[Tuffnuts23]

Glad to hear its a throttle body thing and not something related to the PCV system. After thinking about it, it would make sense that my catch can would be sucking air with the motor running. I don't know why that freaked me out.

 

[Fabbed5.0]

take a pic of how you have the pcv hose routing

 

[99cobraUgotbit]

Your wrench light will also come on if you hold it in a high REV steadily.

 

[beefcake]

sometimes the light will come on every once in a while for what seems to be no reason,

shut the car off, then back on, and fine

 

[pohnjarker]

Your wrench light will also come on if you hold it in a high REV steadily.

i have had this happen a couple of times right after i installed the paxton. thought i broke something.

id rather not buy a new throttle body just to fix the issue though.

 

[slagburn]

I had a loose air intake tube throw a wrench light a few times.

 

[Tuffnuts23]

take a pic of how you have the pcv hose routing

I'm at work now, but this is how it's routed.
Passenger side PCV valve to rear most catch can elbow. Front most catch can elbow to male PCV fitting between intake manifold and throttle body.

 

[Quesplosive]

I had a loose air intake tube throw a wrench light a few times.

Just had this happen. Soon as I got the hood open I was like okay maybe this is one of or all of the problems Im having now. Had codes p0300 and p0304 being shown before I cleared them. Will try to ride around tomorrow to see if they go away for good.

 

[ah4449]

I seem to only get the wrench light when I'm going down hill and I throw the car into neutral. It's the strangest thing and almost happens consistently. I just leave it in 6th gear now and it never comes on. It's happened enough for me that I just turn the car off then back on real quick while still driving. Then it's fine of course.