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3.4L DOHC rev problem


willsboattail

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I have a 1993 Cutlass Convertible with a 3.4L V6 DOHC engine in storage for the winter. Started it yesterday for a mid-winter warmup and revved it a few times after several minutes of running. Engine would not rev past 3000rpm. Pushing gas steady to get higher than 3000rpm, it began to rev cutting in/out, back/forth and didn't rev past 3000rpm.

:question: Is there a rev limiter on these things, or do I have a problem coming? :question:

I did not drive the car as it's snowed in the storage unit.

:willynilly: Kevin in ND :willynilly:

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depends on the stock chip. i have at least three 91-93 3.4 BINs that show a cutoff at 3000...

 

 

normal.

 

EDIT: the 3.1 cars are set to cut out at 4000 though...

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why rev it in park anyway?

:mrgreen: DUNNO...... guess I just wanted to create a bit more heat at 14 degrees above zero and warm it up faster.

:lol: Maybe the poor thing wanted to feel a bit more macho sitting next to my 72 Biuck Riviera 455? :lol:

:willynilly: Thanks to all for the replies/can't wait for spring and top down fun :willynilly:

:high5: Kevin in ND

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why rev it in park anyway?

:mrgreen: DUNNO...... guess I just wanted to create a bit more heat at 14 degrees above zero and warm it up faster.

:lol: Maybe the poor thing wanted to feel a bit more macho sitting next to my 72 Biuck Riviera 455? :lol:

:willynilly: Thanks to all for the replies/can't wait for spring and top down fun :willynilly:

:high5: Kevin in ND

 

Now, I'm not an expert, but isn't revving the engine real high when its cold about the last thing you want to do?

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Now, I'm not an expert, but isn't revving the engine real high when its cold about the last thing you want to do?

 

yes.

 

i consider it the same thing as neutral-dropping a tranny: nothing good will come of it and more often than not, you're causing damage that will eventually bite your ass hard later.

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depends on the stock chip. i have at least three 91-93 3.4 BINs that show a cutoff at 3000...

 

 

normal.

 

EDIT: the 3.1 cars are set to cut out at 4000 though...

 

My '93 3.1's park/neutral limiter is at 3,000.

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My '93 3.1's park/neutral limiter is at 3,000.

 

what is the BCC? it may be one i don't have to inspect... but of all of the BINs i do have, all of the 3.1s were set to cut at 4K, and all of the 3.4s set to cut at 3K.

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My '93 3.1's park/neutral limiter is at 3,000.

 

what is the BCC? it may be one i don't have to inspect... but of all of the BINs i do have, all of the 3.1s were set to cut at 4K, and all of the 3.4s set to cut at 3K.

 

Not sure Robert. I just remember it cutting at 3,000rpms. 3.1 MPFI/4T60-E in the car. Stock memcal.

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oh well, off topic anyway.

 

important thing is that it's something adjustable if need be and that it looks like it can vary within the same mask and engine and still be normal.

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Now, I'm not an expert, but isn't revving the engine real high when its cold about the last thing you want to do?

 

yes.

 

i consider it the same thing as neutral-dropping a tranny: nothing good will come of it and more often than not, you're causing damage that will eventually bite your ass hard later.

Thanks for the advice and I agree.

:twisted: After owning 15 cars in my 53 years of life, I haven't dropped an engine, or tranny since high school back in the early 1970's!!! :evil:

:willynilly: Kevin in ND :willynilly:

 

 

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