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Old 02-14-2007, 09:14 PM   #1
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something strange!!!

tonight i drove my stang , when i need to shift i press the clucth the rpm up to 3,000 and sometimes 3.5 and if keep down the clutch the rpm stay in 3,000. and if i release the clutch in nuetral the rpm stay in 3,000, the only way for the rpms go down is when shift and reales the clutch. for example , im in 2 and press the clutch , the rpm up to 3,000, shift to 3 and release the clutch, the rpm down as normal, but when i press the clutch to shift 4, is the same , rpms up to 3,000.

any of you have a similar problem?? i dont know what is causng that
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Old 02-14-2007, 09:19 PM   #2
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Re: something strange!!!

either a vacuum leak or your IAC is pegged high for some reason... some random v6er will chime in soon, I'm sure
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Old 02-14-2007, 09:35 PM   #3
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Re: something strange!!!

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either a vacuum leak or your IAC is pegged high for some reason... some random v6er will chime in soon, I'm sure
when u say vaccum leak you refer a leak in the CAI, ???

another thing i forgot. when the press the clutch and the rpm up t0 3000 or 3500, sometimes i hear the intake working a little more than normal.

if the AIC is pegged high, how i fix that??
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Old 02-14-2007, 09:49 PM   #4
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Re: something strange!!!

idle air control could be stuck open.. could remove it and spray it out with some carbeurator cleaner..

vacuum leak is kind of a general term.. in todays cars with the mass air... it is any intake of unmetered air (any air that gets in behind the mass air meter...)

unmetered air = high idle also = engine running lean
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Old 02-16-2007, 06:29 AM   #5
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Re: something strange!!!

That's one of the problem I got with the vacuum booster leading to brake failure...

You can make a small test to know if the vacuum booster or it's valve is defective...

For the next time, before starting your engine, press the brake pedal just one time this pedal is supposed to be smooth as if the engine is running but if the vacuum is in fault your pedal will be very very stiff...If it's stiff I suggest you go the service department to make it fix if you don't you will get the same surprise that I got; driving on the street you need brake, the darn pedal is stiff and no brake at all.

BP

Do that test for the next days...
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Old 02-16-2007, 08:05 AM   #6
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Re: something strange!!!

Well...the way these cars are designed, the brake pedal gets stiffer and stiffer the more you push on the pedal unless the car is on. That's the way my car and my gf's car have been from the factory.
I can go out to my car right now and feel resistance on the brake pedal.
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Old 02-16-2007, 09:54 AM   #7
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Re: something strange!!!

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Originally Posted by Black Panther View Post
That's one of the problem I got with the vacuum booster leading to brake failure...

You can make a small test to know if the vacuum booster or it's valve is defective...

For the next time, before starting your engine, press the brake pedal just one time this pedal is supposed to be smooth as if the engine is running but if the vacuum is in fault your pedal will be very very stiff...If it's stiff I suggest you go the service department to make it fix if you don't you will get the same surprise that I got; driving on the street you need brake, the darn pedal is stiff and no brake at all.

BP

Do that test for the next days...
the problem that you have made the service engine light comes on???
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Old 02-16-2007, 09:57 AM   #8
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Re: something strange!!!

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Originally Posted by carlosc View Post
the problem that you have made the service engine light comes on???
It can trip the check engine light if a vacuum leak is bad enough to have the 02 sensors constantly switching lean.. once the long term fuel trims get above a certian point, it will trip the light
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Old 02-16-2007, 11:24 AM   #9
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Re: something strange!!!

Quote:
Originally Posted by Black Panther View Post
That's one of the problem I got with the vacuum booster leading to brake failure...

You can make a small test to know if the vacuum booster or it's valve is defective...

For the next time, before starting your engine, press the brake pedal just one time this pedal is supposed to be smooth as if the engine is running but if the vacuum is in fault your pedal will be very very stiff...If it's stiff I suggest you go the service department to make it fix if you don't you will get the same surprise that I got; driving on the street you need brake, the darn pedal is stiff and no brake at all.

BP

Do that test for the next days...
i do the small test that you said , the fisrt time i press the brake it was normal, the same feel with the engine is on
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Old 02-17-2007, 01:16 PM   #10
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p1120

my car give that code, p1120 TPS out of range low (RATCH too Low)

in this site i found more about that code

OBD-II Powertrain Diagnostic Trouble Codes (1000-1900)

...but how can i resolve that problem, ????
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Old 02-18-2007, 07:37 AM   #11
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Re: p1120

merged the two threads, no need for 2
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Old 02-18-2007, 09:05 PM   #12
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Re: p1120

the last month i changed the TPS and now i have tihis code(p1120)TPS out of range low , my question a bad IAC or MAF can alterate TPS reading and give that code???
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Old 02-18-2007, 09:17 PM   #13
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Re: p1120

You have to adjust the TPS to get the right voltage. That is why you are getting the p1120 code. See this http://www.mustangevolution.com/forum/t25764 and this http://www.mustangevolution.com/forum/t25676
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Old 02-18-2007, 09:30 PM   #14
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Re: p1120

i friend of mine put the sensor i dont know if he calibrate it, but he works at ford, so i thimk he calibrete the sensor, but i will check anyway, but just curious, a bad MAF or bad IAC can give that code for alterate de TPS readings???
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Old 02-18-2007, 10:22 PM   #15
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Re: p1120

If you weren't getting the TPS low code before you put the new TPS on then it's probably the TPS needing to be aligned.
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Old 02-18-2007, 10:36 PM   #16
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Re: p1120

i changed the TPS last month because i have p1125 code, TPS intermitent, and o month later when i press the clutch thr rpms up to 3,000, and have this code p1120 TPS out of range low (RATCH too Low)
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Old 02-19-2007, 09:55 AM   #17
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Re: p1120

another ???, the voltage recomended for the TPS (.98 - 5v) is the same for a v6 3.8(2001) or this measure is for 5.0L??
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Old 02-19-2007, 02:50 PM   #18
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Re: p1120

It's the same for the V6
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Old 02-19-2007, 03:16 PM   #19
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Re: p1120

ok this is the first time that i will try to calibrate the tps. 1 more question before do that , i know i will measure voltage, but i put the meter in AC or DC??
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Old 02-19-2007, 03:18 PM   #20
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Re: p1120

DC 20
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Old 02-20-2007, 07:06 PM   #21
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Re: p1120

today i just disconnect the tps sensor, clean the connector a bit, and connect the tps , then disconnect the battery for clear the check engine , when start the car drive it for 25 minutes and the cars runs very well, after do it this i used the cars a few times, and no check engine , and the car feels right
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