Ok What the Deuce?
2 posters
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Ok What the Deuce?
by Guest Thu Apr 22, 2010 2:49 pm
Ok so I'm on my way back from lunch today and pull up to the light and molly shuts off. I start her back up and off she goes again. Now my autometer tach is going nuts, 0-10 g's and back so i turn the key off and let it sit for a couple of seconds, start her back up and the lights change. I get to second, and she jumps like the fuel just quit or theres water in my system or something, cuts off and i pop the clutch and get her started... after that she ran fine. i did notice her surging a bit from about 750-1000 g's and my oil pressure at idle is about 25-30 but jumps up to about 50 when i hit the gas. Well yesterday I decided to fill up on 89 instead of 93. anybody know why the tach did that or why she jumped like that?? 
Guest- Guest
scstanger- Admin
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Number of posts : 1175
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Re: Ok What the Deuce?
by Guest Thu Apr 22, 2010 3:33 pm
probably, but she had a bath and I fed her...
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Re: Ok What the Deuce?
by mustangmallory Fri Apr 23, 2010 3:36 am
Haven't had this issue with a Mustang before, but one of my Jeeps. Start the car up and see it the idle jumps up and down, like right as it's about to cut off, the idle kicks back up by itself. Don't give it gas or anything. Chances are that your Throttle Position Sensor (TPS) is bad, giving a improper signal to the ECU, causing it not to know where to idle. The car will run with your foot on the gas, but die otherwise, cause it can't regulate fuel pressure, air flow, etc without knowing clock of the throttle body. Now, if your car is not drive by wire and you actually have a throttle cable going to the throttle body, well what I just said it completely wrong and I can't help you lol. Hope you find the cure!
mustangmallory- Moderator
- Number of posts : 246
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My Name: : Ridge
My Ride/Rides: : 2006 Mustang GT
Mods: : Mallory is more about looks than speed right now. I'm trying to keep it clean and classy, while bringing out the natural aggression of our beloved stangs.
CDC Aggressive chin spoiler
Golden Eye 6k HID headlights and foglights
Shelby Cobra Super Snake stripe
20% Windown film from Palmetto Pro Tint
H&R Super Sport lowering springs
KMC Nova series wheels with Nitto NT550 tires (staggered fit)
OEM 1966 "GT" fender badges...yes they are over 50 years old
UPR Products Pistol grip shifter
Dash has been blacked out
Pioneer f700 headunit
Roush hood scoop
Saleen headlight splitters
Clear front corner marker lights
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Re: Ok What the Deuce?
by Guest Fri Apr 23, 2010 2:14 pm
thanks, she's not doing it anymore (knock on wood) but i thought it was weird how the tach was jumpin w/o her running... maybe like there was a short or something...
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Re: Ok What the Deuce?
by mustangmallory Fri Apr 23, 2010 2:24 pm
Did you recently wash the motor or something?
mustangmallory- Moderator
- Number of posts : 246
Age : 45
Humor : I find humor in everything!
My Name: : Ridge
My Ride/Rides: : 2006 Mustang GT
Mods: : Mallory is more about looks than speed right now. I'm trying to keep it clean and classy, while bringing out the natural aggression of our beloved stangs.
CDC Aggressive chin spoiler
Golden Eye 6k HID headlights and foglights
Shelby Cobra Super Snake stripe
20% Windown film from Palmetto Pro Tint
H&R Super Sport lowering springs
KMC Nova series wheels with Nitto NT550 tires (staggered fit)
OEM 1966 "GT" fender badges...yes they are over 50 years old
UPR Products Pistol grip shifter
Dash has been blacked out
Pioneer f700 headunit
Roush hood scoop
Saleen headlight splitters
Clear front corner marker lights
Cherry Bomb mufflers -
Re: Ok What the Deuce?
by Guest Fri Apr 23, 2010 2:44 pm
well right before Richards bday, i used engine degreaser, but i had the intake, and all the fragile stuff and electronics covered and used only a cup to rinse it off, it should have done it before then don't you think???
Guest- Guest
Re: Ok What the Deuce?
by scstanger Fri Apr 23, 2010 3:34 pm
Yes, it's had plenty of time to dry out since then. I know I have!!!!!! 
scstanger- Admin
- Number of posts : 1175
Age : 45
Humor : In every situation!
My Name: : Richard
My Ride/Rides: : 2000 Roush Stage 1
Mods: : Roush CAI, BBK 70mm TB with Trickflow Aluminum Intake manifold and plenum, Magnaflow X and shorty mufflers, SCT Tune, 8000k HID Headlights and FOGS
mustangmallory- Moderator
- Number of posts : 246
Age : 45
Humor : I find humor in everything!
My Name: : Ridge
My Ride/Rides: : 2006 Mustang GT
Mods: : Mallory is more about looks than speed right now. I'm trying to keep it clean and classy, while bringing out the natural aggression of our beloved stangs.
CDC Aggressive chin spoiler
Golden Eye 6k HID headlights and foglights
Shelby Cobra Super Snake stripe
20% Windown film from Palmetto Pro Tint
H&R Super Sport lowering springs
KMC Nova series wheels with Nitto NT550 tires (staggered fit)
OEM 1966 "GT" fender badges...yes they are over 50 years old
UPR Products Pistol grip shifter
Dash has been blacked out
Pioneer f700 headunit
Roush hood scoop
Saleen headlight splitters
Clear front corner marker lights
Cherry Bomb mufflers -
Re: Ok What the Deuce?
by Guest Fri Apr 23, 2010 5:40 pm
i know my car acted kinda crazy like that when my alternator was dying
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