PDA

View Full Version : is this a vacuum problem?



Go_Fast
12-07-2010, 02:02 PM
my car usually idles at 1500 rpms, but everymorning when i start it, it revs itself up to 2500, sometimes 3000 rpms until its warmed up. also everymorning on the first start i have to punch the gas to start driving, i guess the pedal gets stuck somehow overnight. i noticed that my boost needle isn't directly on zero (it was before)(car is off in pic).
http://i56.tinypic.com/qq1m38.png
any ideas on what could be causing the high revving morning idle or sticking gas pedal?
any ideas or suggestions would be helpful.
thanks in advance.

RBS
12-07-2010, 02:23 PM
at idle, at running temp, is the car at full vacuum? -15 to -20?

STRteg
12-07-2010, 03:20 PM
your car usually idles at 1500rpm ? ..... I think that should be your main focus first

Go_Fast
12-07-2010, 03:52 PM
at idle, at running temp, is the car at full vacuum? -15 to -20?yeah usually around -20. when it starts to warm up it goes lower and lower until it sits at 1500

Go_Fast
12-07-2010, 04:00 PM
your car usually idles at 1500rpm ? ..... I think that should be your main focus first

well the idle hasnt had an issue before now, and i just got a job so getting to work is my main focus. thanks for your help.

RBS
12-08-2010, 08:48 AM
ok so let me get this straight, on idle it IS DEFINITELY at full vac right? or is it at 0, atmospheric pressure? the OP says "boost gauge is at 0". if you was nearby i would gladly look at the car for you.



aside from that, it could be a bad IACV and the sticking is a dirty throttlebody plate, or someone stuck some bubblegum in there

Go_Fast
12-08-2010, 08:57 AM
ok so let me get this straight, on idle it IS DEFINITELY at full vac right? or is it at 0, atmospheric pressure? the OP says "boost gauge is at 0". if you was nearby i would gladly look at the car for you.



aside from that, it could be a bad IACV and the sticking is a dirty throttlebody plate, or someone stuck some bubblegum in there

its at full vac when its warming up. after a few minutes everythings perfectly normal again. i just want to get it fixed because it wastes alot of gas and is ridiculously loud.

where are you located?

RBS
12-08-2010, 09:27 AM
forest park, this weekend im leaving town sadly. so the most help i can offer now is through IA

Black4DrEK
12-08-2010, 10:00 AM
Shit.. When I had a Bad IACV.. my car just wouldnt even idle at first start up.. until it warmed up.

and yea it sounds like you should clean your Throttle body... Also Make sure the TB gasket it good, and the bolts are ALL tight.

Go_Fast
12-08-2010, 11:24 AM
thanks for the help guys.

any idea about the boost needle? or is it just broken?:thinking:

Black4DrEK
12-08-2010, 11:37 AM
It works doesnt it?

Go_Fast
12-08-2010, 11:50 AM
It works doesnt it?

yeah

Black4DrEK
12-08-2010, 12:00 PM
If it aint broke, dont 'fix' it.

Go_Fast
12-08-2010, 10:15 PM
alright what about this? i know this should be at 0, the car is off

http://i56.tinypic.com/24uvpmx.jpg

RBS
12-09-2010, 08:36 AM
thats your fuel pressure, the reading it gives when the car is on is what matters

Go_Fast
12-09-2010, 11:46 AM
thats your fuel pressure, the reading it gives when the car is on is what matters

i know its for the fuel pressure i just thought it should say zero. i havent moved the car since saturday i think, and last time i looked it was a 0.

i appreciate the help. i'm pretty new to this stuff

RBS
12-09-2010, 12:53 PM
all good, we all start somewhere.