What could cause this power problem?

S

Synned

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Mar 31, 2005

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Philly

Apr 17, 2006

#1

• Apr 17, 2006

• #1

Sometimes when my car is running...it has absolutely NO power. I floor it and it feels like its on 4 cylinders. I think it does pick up a little in the power band but still not good.
I always notice this happens in warmer weather...but it is NOT just because of the hotter air. Something definetally goes wrong.
I'm wondering what the first steps I should take in trying to diagnose this problem.
I do have a slight misfire at idle as well...but I don't think the two are related.
I have new o2's, new ect and new plugs, wires, cap and rotor.

Thanks guys
Joe

 

S

Synned

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Philly

Apr 18, 2006

#2

• Apr 18, 2006

• #2

 

urban96

bubb rubb says:"woo woooooo"

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69

Syracuse, NY

Apr 18, 2006

#3

• Apr 18, 2006

• #3

im fightingthat same battle, you getting the spitting/poping too?

 

95Vert

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Aug 19, 2004

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Apr 18, 2006

#4

• Apr 18, 2006

• #4

I'd say to check all your plugs and wires. Check your cap and rotor. It could be that simple. If that's not it, get a test done to your injectors. Clean your MAF and check your TPS along with the IAC. A friend of mine had the same problem and after changing all of that, the problem was the fuel pump. After the car warmed up, the fuel pump would lose pressure and make the car feel like a semi truck.

 

S

Synned

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Mar 31, 2005

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Philly

Apr 18, 2006

#5

• Apr 18, 2006

• #5

urban96 said:

im fightingthat same battle, you getting the spitting/poping too?

Click to expand...

Yes!

 

S

Synned

took tubgirl on a date and got banned

Mar 31, 2005

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Philly

Apr 18, 2006

#6

• Apr 18, 2006

• #6

So does anyone know what FP should be at idle?

 

HISSIN50

"How long does it take to get help in here?

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Nov 29, 1999

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Apr 18, 2006

#7

• Apr 18, 2006

• #7

Synned said:

So does anyone know what FP should be at idle?

Click to expand...

Anything over 30 PSI with the FPR vac line attached is acceptable. WIth the vac line detached, look for 38-39 PSI.

Good luck.

 

Skoobie

Damn...Tyler65's hot!

May 25, 2003

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Vancouver, WA

Apr 18, 2006

#8

• Apr 18, 2006

• #8

HISSIN50 said:

Anything over 30 PSI with the FPR vac line attached is acceptable. WIth the vac line detached, look for 38-39 PSI.

Good luck.

Click to expand...

What would be the symptoms if your FP was below 30PSI?

 

HISSIN50

"How long does it take to get help in here?

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Apr 19, 2006

#9

• Apr 19, 2006

• #9

Skoobie said:

What would be the symptoms if your FP was below 30PSI?

Click to expand...

It depends upon what is causing the low pressure.

In general if one has low pressure across the board, I would expect pinging under load.

 

urban96

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Syracuse, NY

Apr 19, 2006

#10

• Apr 19, 2006

• #10

hmm.. i think mine is from running super rich with no tune yet. im running 25degrees total advanced (timing locked out) with no pinging. upper RPM's seem decent so im guessing its from the cam/injectors