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cannot redline car

bluegtp91 said:
For the record...I just watched your video...and ummm...it goes nearly to redline...I don't see the issue at all other than its a slow, bone stock, N/A 3800 trying to pull the Titanic with more weight added from the driver/passenger.
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Dont mean to sit here correcting everyone, but he said he found that video on youtube, then he later posted that he would get a vid in the morning.
 


What about me.. you guys know I'm supercharged and answer nearly every post correctly. Once in a while though...I totally miss.

This is that post. Book mark it so that when I fix a huge issue for cheap...you can say.. "Bill is only human". :th_biggrin2:

Which...I really am.
 


First gear is usually shifting at a lower RPM than redline anyway. I'm not by my tuner to see what WOT shift point is set at in 1st, but I know it's not near redline.

Another point is your computer can be set to shift at 5700rpms, but not actually shift until 6000rpms depending on the tranny.

Another point is if you actually look at the gauge in your car and then at the scanner to see what the pcm is seeing for rpms the dash guage is off.
 
BillBoost37 said:
What about me.. you guys know I'm supercharged and answer nearly every post correctly. Once in a while though...I totally miss.

This is that post. Book mark it so that when I fix a huge issue for cheap...you can say.. "Bill is only human". :th_biggrin2:

Which...I really am.
Click to expand...
Bill isn't human he's sent from the planet L67 in the gm galaxy. Your secret is out bill.
 
he has a 4t60 right because hes a 97 gt? isn't that vacuum powered and not electronically controlled like the 4t65? i dont know much about trannys so...
 


Probably would be handy to hook up a scanner. Clogged cat, clogged fuel filter, clogged air intake filter, mucky plugs, dying wires, enormous vacuum leak, throttle issue...
 
SlowNA06 said:
Probably would be handy to hook up a scanner. Clogged cat, clogged fuel filter, clogged air intake filter, mucky plugs, dying wires, enormous vacuum leak, throttle issue...
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i can eliminate the fuel and air filter, and the plugs and wires. no vacuum codes. so, now where are we?
 
It's funny...for all the times I hear and read people saying injectors..it's typically something else. Injectors maybe 1% of the time.

Let's see.. maf and tps have a lot to do with trans shifting. Only real difference between 4T60 and 4T65 shifting is the pcs vs vacuum controlled. This effects the shift pressure, not timing or gear. So we can rule that out.

Say his tps or maf are off or screwin up. That could do it.
 


BillBoost37 said:
It's funny...for all the times I hear and read people saying injectors..it's typically something else. Injectors maybe 1% of the time.

Let's see.. maf and tps have a lot to do with trans shifting. Only real difference between 4T60 and 4T65 shifting is the pcs vs vacuum controlled. This effects the shift pressure, not timing or gear. So we can rule that out.

Say his tps or maf are off or screwin up. That could do it.
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bad gas milage also. related to tps of maf?
 
99PGPGT said:
yeah that would be related. is it "jerky" at all when driving? act like it almost wants to stall idling? im with nick saying it might be a clogged cat.
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when it shifts it definetly feels like it boggs down, sluggs alittle. should i do the old 02 sensor trick to check the cat?
 
Fuel mileage and bad shifting, wrong shift points etc can be related to needing a tune up.

When was the last plug and wire change?
Last time you cleaned the TB/MAF?
 
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