1998 Ford Taurus Engine Idle

FERRARI2479

MEMBER
1998 FORD TAURUS
6 CYL
FWD
AUTOMATIC
222,000 MILES

OK so upon a cold start up my car shakes at idle and then takes a lot of gas to get the car going. Also when I'm sitting at stop lights in gear the cars rpms will go down to prob almost 500 rpm and almost stall and then come back up. No check engine light.

6 Replies

JACOBANDNICKOLAS

MECHANIC
109,755 POSTS

It sounds like a vacuum leak. Have you checked for that? Also, have you checked fuel pump pressure?

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Saturday, July 24th, 2010 AT 11:46 PM

FERRARI2479

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I havent tested for a vacuum leak because I cannot find a good diagram for the vacuum lines so I can check it with a guage.

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Sunday, July 25th, 2010 AT 1:24 PM

JACOBANDNICKOLAS

MECHANIC
109,755 POSTS

Yes, check the vacuum at the intake and let me know what you find. Also, let me know if the check engine light has come on.

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Monday, July 26th, 2010 AT 1:06 AM

FERRARI2479

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Ya I found two lines that come off the intake one goes to the oil cap and the other goes around can I just use that one. And can I just tap that line with a t fitting or can I just stick the gauge directly on the intake.

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Monday, July 26th, 2010 AT 11:25 AM

FERRARI2479

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Ok so I took a vauum reading. I tapped a line the was coming off the intake. It was reading a steady 5 in hg. That seemed really low, implying a major intake leak so was wondering if I did something wrong or it might just really be that bad.