Engine Trouble

**Pursell1911** · 01-13-2017

Hey all, I'm new to this forum and I need some guidance regarding my 2007 Grand Prix GT. I purchased the car a few months ago from a family friend. There is an issue with my engine (I think). Here's what's happening...

When I'm in gear and reach right about 4000rpm, I hear a loud clicking noise, and lose all power. If I let off the gas a little, the transmission will shift and all is well. But I can't get over 4000rpm. Aside from that issue, everything seems to work well with the car. I've searched all over the place for answers for this problem I'm having, but I can't find any other cases of this issue...Don't know the first thing about SC's so thought it could possibly be related to that, but don't know.

Thanks all!

**Pursell1911** · 01-13-2017

I believe I tried that, and the issue occurred. The car is in the shop right now for an unrelated issue, so I will check when I pick it up later this afternoon. But I'm pretty sure the answer to your question is no, it will not go above 4k while in 1st gear.

**Bronco Boy** · 01-13-2017

Can you rev past 4000 rpm in neutral?

**Pursell1911** · 01-13-2017

I'm probably wrong here, but doesn't the computer limit past 4k rpm in P or N? I can try that when I get the car back later today.

**Bronco Boy** · 01-13-2017

Originally Posted by Pursell1911

I'm probably wrong here, but doesn't the computer limit past 4k rpm in P or N? I can try that when I get the car back later today.

Not on any car I've ever owned or worked on.

**Pursell1911** · 01-13-2017

ok, I guess I shouldn't believe everything I see on the net lol. I will check and post the result.

**Scottydoggs** · 01-13-2017

Originally Posted by Bronco Boy

Not on any car I've ever owned or worked on.

you have a rpm limiter in park and neutral, 4,000 rpm it is.

is the check engine light on, or does it flash when you floor it?

**GTPpower** · 01-13-2017

Sounds to me like your cat is clogged.

**Bronco Boy** · 01-13-2017

Originally Posted by Scottydoggs

you have a rpm limiter in park and neutral, 4,000 rpm it is.

Really? Could have sworn I've revved her over 4K in park. Now I must go try. LOL

**Scottydoggs** · 01-13-2017

floor it and hold it there, it will do the famous ricer limiter rpm cut out gayness.

**Pursell1911** · 01-13-2017

Yes, my check engine light is on, but the mechanic just told me it's no longer on, but he may have just reset it? Not sure. I will check to see if it flashes when I floor it. I will test and post the results.

**markpa** · 01-13-2017

Originally Posted by Bronco Boy

Really? Could have sworn I've revved her over 4K in park. Now I must go try. LOL

Yep it cuts out. Scottys right again.

Sent from my iPhone using Tapatalk

**Pursell1911** · 01-13-2017

So I got my car back and tested. When locked in 1st gear, I can go above 4K rpm. When in drive, there is fast and loud clicking. Note - the transmission shifts very smooth under 3500 rpm. Not sure if that helps or not. Check engine light is not on anymore.

**markpa** · 01-13-2017

Take a video and post.

Sent from my iPhone using Tapatalk

**Bronco Boy** · 01-14-2017

Originally Posted by Scottydoggs

floor it and hold it there, it will do the famous ricer limiter rpm cut out gayness.

OMG, that was gay. I hate that! LOL

**Pursell1911** · 01-15-2017

https://youtu.be/0wK_2aF-LKI

so here is the link to the video I just uploaded. Also, my previous comment was not accurate. This is still occurring when in 1st only. From what I can tell, this is happening when the SC gauge is all the way up. Hope this helps.

**Scottydoggs** · 01-15-2017

wow, no idea wtf that is. being under the bridge made it sound pretty bad. you feel that in any way? your cel on there? looks like it, but im not up on the gp dash. if its on, get it scanned at a parts store. its free. if it turns off when you restart it, dont turn the car off, scan it running. tranny codes can some times clear themselves when restarted.

**Pursell1911** · 01-15-2017

I did it under the bridge so the noise would be more distinct. No I don't feel anything, CEL is on, I'll go get it checked.

**markpa** · 01-15-2017

Crazy noise. No idea. I don't know how a flex plate works but it would seem like it would always make noise if related to that.

Sent from my iPhone using Tapatalk