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Joined: Feb 2006
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OP
New CEG\'er
Joined: Feb 2006
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ok a few weeks ago i noticed that my car was acting funny. check engine light pops up and its the crankshaft position sensor. cool i went out and bought another one. well the problem got a little better but i still have the problem. car will rev in neutral at about 1,5-2k rpm and when it feels like it thats when it slowly drops down to normal, and whenever this is occuring and im shifiting gears the car idle stays up whereever i happen to change the gear at. please help me out some thanks.
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Joined: Sep 2002
Posts: 1,788
Hard-core CEG\'er
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Hard-core CEG\'er
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If your crank sensor goes, your engine quits. Doubt it was bad. What was the actual code you pulled?
Idle speed is controlled by the IAC. They're notorious for gumming up and causing idle problems. Also, be on the lookout for vacuum leaks.
Steve
98 Contour SE Sport 2.5 Duratec ATX The wifey's car
89 Taurus SHO - 246K miles
94 SHO ATX - 190K
1997 F-150 5.4L ATX - The Workhorse 150K.
ANY THREAD WITH "OMG" or "WTF" ETC IN THE TITLE WILL BE IGNORED!
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Joined: Feb 2006
Posts: 40
New CEG\'er
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OP
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well the car would run fine for about 20mins and then after that it would start to do stupid things. when im at stop light and the car is in neutral the rev would stay high. and sometimes would it gradually come down and sometimes it just stays up. if im going slow the car would want to speed up by itself. if im changing gears the rev would stay high. pretty much where i would switch the gear at. i doubt its a vacume leak because it constantly do this but it doesnt do that. it only do it after 20 mins or so driving.well the guy from autozone pulled the code and told me it was the crankshaft position sensor and for a while i been waiting on a cel to come up and nothing. no check engine light so i dont know what to look for.
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Joined: Jun 2005
Posts: 5,345
Addicted CEG\'er
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Addicted CEG\'er
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Originally posted by dremers vision:
...well the guy from autozone pulled the code and told me it was the crankshaft position sensor and for a while i been waiting on a cel to come up and nothing. no check engine light so i dont know what to look for.
Go to another Autozone or Advance and pull the code (s) again (even though it is not lighted, it probably has a intermittent code by now). Then post the code (s). I am surprised they did not suggest an O2 sensor. It seems that is what they suggest most of the time when a CEL code pops up.
"Always do the cheap and easy ones first."
1996 V6 ATX 96K miles
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Joined: May 2006
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New CEG\'er
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New CEG\'er
Joined: May 2006
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The 02 would pop a P0420 code I think. That's what happened to me. I replaced the upstream 02 sensor and it hasn't come on since. Definately get it pulled for codes, maybe something will pop up. My car idles a bit high as well, but I have a Zetec. I just installed a 4 cyl. tach/cluster and not sure how accurate it is. But idle reads just a tad under 1k RPM's.
'96 Contour - Zetec/MTX 130+k mi. White/tan
Tints, 2.25" custom magnaflow catback, tach cluster
'86 Mustang SVO Red/Sunroof 80k orig. Needs work
Cone filter, E6 Manifold, '01 16" Pony Wheels
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Joined: Mar 2003
Posts: 390
CEG\'er
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CEG\'er
Joined: Mar 2003
Posts: 390 |
Originally posted by dremers vision:
when im at stop light and the car is in neutral the rev would stay high. and sometimes would it gradually come down and sometimes it just stays up. if im going slow the car would want to speed up by itself. if im changing gears the rev would stay high. pretty much where i would switch the gear at.
my car is currently doing this as well. Did you ever figure it out? Thanks
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Joined: Mar 2003
Posts: 390
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CEG\'er
Joined: Mar 2003
Posts: 390 |
Originally posted by offroadSVT:
Originally posted by dremers vision:
when im at stop light and the car is in neutral the rev would stay high. and sometimes would it gradually come down and sometimes it just stays up. if im going slow the car would want to speed up by itself. if im changing gears the rev would stay high. pretty much where i would switch the gear at.
my car is currently doing this as well. Did you ever figure it out? Thanks
I replaced the TPS per Dremers Vision advice... fixed the problem, thanks.
FYI- The Murrays and Pep boys TPS sensor didn't work right, so I had to buy it at the Dealer ($52).
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Joined: Dec 2004
Posts: 508
Veteran CEG\'er
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Veteran CEG\'er
Joined: Dec 2004
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I had same problem, but was throwing CEL 122 TPS had them clear it, and came back on after 10miles. I took it off and it would not move freely by hand... After TPS replacement all is well. 
JD a.k.a Fingers
"Don't Panic"
'98 Contour GL 2.0L VCT ATX 88k
'98 Contour LX 2.5L MTX 120k
Street racing can kill
just less of a chance with a 2.0
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Joined: Aug 2002
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Not sure if you are using a svt TB on your 3L but it has a different TPS that can only be had from the dealer so i read... CLICK
98.5 Black SVT with 34k miles Build #5683 Born on 4\15\1998
WR Headers GMK CAI
Blaupunkt system fiberglass tweeter pods
L.E.D. tail lights in the works
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Joined: Mar 2003
Posts: 390
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Well the new TPS worked great for about 1 week... Now mine is doing it again. Always at 2700 RPM.
When I come to a stop, it falls back down to idle.
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