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02-12-2008, 08:56 AM
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#1 (permalink)
| | Junior Member
Join Date: Jan 2008
Posts: 16
|  Engine idle issue
I have a 1998 Taurus that was getting a 0340 code before vacation, the code has since cleared itself and now I have no trouble codes!!! I now notice though that the engine idles about 1000 rpm higher than it used to (about 1600-1700) with now trouble codes active. Car ran great from Chicago to Branson and has run well in town. I just hope this new issue doe not cause me problems getting home..... | 
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02-12-2008, 12:44 PM
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#2 (permalink)
| | Moderator
Join Date: Sep 2007 Location: central illinois
Posts: 1,630
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can you hear any vacuum lines leaking?
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93 Thunderbird 5.0 HO
89 Firebird L03
95 F150 XL
Get ready for the 351 boss build this summer, 4v closed chamber heads, 2.25/1.75 valves, .750 lift, 12.5:1 piistons, wieand tunnel ram, nitrous, I think its gonna roar!
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02-12-2008, 02:26 PM
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#3 (permalink)
| | Junior Member
Join Date: Jan 2008
Posts: 16
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I know this may sound stupid, how do I idle the engine down enough to listen for a vac leak???? I have felt around and feel nothing leaking, YET. | |
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02-12-2008, 02:41 PM
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#4 (permalink)
| | Moderator
Join Date: Sep 2007 Location: central illinois
Posts: 1,630
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you'll sometimes be able to hear the leak at the new idle the engine has chosen. Or you could try spraying just a little throttle body cleaner in the engine at its "idle" and see if the engine revs up. Ford cars are also bad about the IACV plugging up.
__________________
93 Thunderbird 5.0 HO
89 Firebird L03
95 F150 XL
Get ready for the 351 boss build this summer, 4v closed chamber heads, 2.25/1.75 valves, .750 lift, 12.5:1 piistons, wieand tunnel ram, nitrous, I think its gonna roar!
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02-12-2008, 02:50 PM
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#5 (permalink)
| | Junior Member
Join Date: Jan 2008
Posts: 16
|  huh....
As I sit here idling in the parking lot using the malls Wi-Fi, my car starts to idle correctly but now the service engine soon light is on.... I will check for error codes once I find a place that will read them and post again.... | |
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02-21-2008, 05:05 PM
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#6 (permalink)
| | Junior Member
Join Date: Jan 2008
Posts: 16
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OK, I am home now and have error codes P0340 & P1506... Idle issue is still sporadick, usually problematic when cold, I will restart the car a few times and sometimes it will clear otherwise I will drive that way and then shut down halfway to work and it seems to reset back to normal.(Only 6 miles to work...) | |
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