i think a miss?
09-10-2006, 09:44 PM
#1
i think a miss?
when i first crank up my car it will idle then it goes up and down and then kills if i dont give it gas, i know my idles set low but it seems like a miss my dad says its a miss anyways. i know i have some vac. leaks, so my question is: can a nice enough vac. leak seem like a miss? i changed wires & plugs. my next step is im putting a new tb, intake n some other new parts i have, and if that doesnt fix it ill probably change my idle air control and hopefully if that doesnt fix it its my 02 sensor? any help would be greatly appreciated.
09-10-2006, 09:49 PM
#2
3rd Gear Member
Join Date: Mar 2005
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Posts: 699
RE: i think a miss?
I dont know if it can seem like a miss but check these two things....
I used to have that problem with my car running really rough when I started it. Like it has a huge cam but then smoothes out after about 10 secs.
Check your batt voltage and make sure your batt is fully charged. This will help your spark and will help your car run smoother.
Check your air idle control module. Take it off and clean it up.
Make sure you fix those vacuum leaks or just temp seal them for now.
If that doesn't fix it make sure your fuel pump is not running poorly before it warms up.
That is all I can think of right now.
I used to have that problem with my car running really rough when I started it. Like it has a huge cam but then smoothes out after about 10 secs.
Check your batt voltage and make sure your batt is fully charged. This will help your spark and will help your car run smoother.
Check your air idle control module. Take it off and clean it up.
Make sure you fix those vacuum leaks or just temp seal them for now.
If that doesn't fix it make sure your fuel pump is not running poorly before it warms up.
That is all I can think of right now.
09-10-2006, 09:55 PM
#3
RE: i think a miss?
itll run fine once it warms up, so i think its just idling problems, battery is new, new terminals, im almost positive its not the fuel pump, im going to clean the iac when i change my tb, cai, & stock intake to edelbrock intake. mine sounds like you said it has a huge cam in it when you first crank it. but once i go run it hard itll be fine.
09-10-2006, 09:59 PM
#4
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Join Date: Mar 2005
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Posts: 699
RE: i think a miss?
ORIGINAL: Ecstasy
itll run fine once it warms up, so i think its just idling problems, battery is new, new terminals, im almost positive its not the fuel pump, im going to clean the iac when i change my tb, cai, & stock intake to edelbrock intake. mine sounds like you said it has a huge cam in it when you first crank it. but once i go run it hard itll be fine.
itll run fine once it warms up, so i think its just idling problems, battery is new, new terminals, im almost positive its not the fuel pump, im going to clean the iac when i change my tb, cai, & stock intake to edelbrock intake. mine sounds like you said it has a huge cam in it when you first crank it. but once i go run it hard itll be fine.
09-10-2006, 10:01 PM
#5
RE: i think a miss?
im just going to get a new one i think, so that way my whole intake setup will be new, new intake, bbk cai, new tb, egr elim. and i may have them shoot my timing also. what should i set it on?
09-10-2006, 10:41 PM
#7
Join Date: Sep 2006
Location:
Posts: 1
RE: i think a miss?
My car has a similar problem. It's (usually) fine when it's cold but after it warms up it starts to surge and get worse and worse until i rev it or it dies. I used to get random check engine lights until I changed the throttle position sensor. That didn't fix the idle problem but it got rid of a few dead zones. I got a new IAC and that fixed my problem completely for two whole days.... (wtf?) I know the battery is getting plenty of juice and I just changed out the wires, fuel filter and cap-n-rotor. All that's left is plugs (which seem to be in almost new condition) and the O2 sensors... It's got Bosch sensors and Platinum2 plugs... Is there any way to check the O2 sensors? I've heard that platinum plugs are bad for 5.0's, is that true?
Any help you guys can give is appreciated.
Any help you guys can give is appreciated.
09-10-2006, 10:45 PM
#8
3rd Gear Member
Join Date: Mar 2005
Location:
Posts: 699
RE: i think a miss?
ORIGINAL: obsolete13
My car has a similar problem. It's (usually) fine when it's cold but after it warms up it starts to surge and get worse and worse until i rev it or it dies. I used to get random check engine lights until I changed the throttle position sensor. That didn't fix the idle problem but it got rid of a few dead zones. I got a new IAC and that fixed my problem completely for two whole days.... (wtf?) I know the battery is getting plenty of juice and I just changed out the wires, fuel filter and cap-n-rotor. All that's left is plugs (which seem to be in almost new condition) and the O2 sensors... It's got Bosch sensors and Platinum2 plugs... Is there any way to check the O2 sensors? I've heard that platinum plugs are bad for 5.0's, is that true?
Any help you guys can give is appreciated.
My car has a similar problem. It's (usually) fine when it's cold but after it warms up it starts to surge and get worse and worse until i rev it or it dies. I used to get random check engine lights until I changed the throttle position sensor. That didn't fix the idle problem but it got rid of a few dead zones. I got a new IAC and that fixed my problem completely for two whole days.... (wtf?) I know the battery is getting plenty of juice and I just changed out the wires, fuel filter and cap-n-rotor. All that's left is plugs (which seem to be in almost new condition) and the O2 sensors... It's got Bosch sensors and Platinum2 plugs... Is there any way to check the O2 sensors? I've heard that platinum plugs are bad for 5.0's, is that true?
Any help you guys can give is appreciated.
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