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#1
12-12-2005, 11:42 AM
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'93 5.7L idles at 200-300 rpm at a light
TPS & Air idle works, new coolant sensor, but it stills idles around 200 -300 rpm at a stop light. Could a bad MAP sensor cause this? Could the chip be bad?
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#2
12-14-2005, 06:30 PM
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I assume you are in gear with your break on. It could be something in your breaks causing a vacuum leak. Might check you master cylinder ect. My 95 did the same thing, and turned out it was my master cylinder.
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#3
12-14-2005, 06:30 PM
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I assume you are in gear with your break on. It could be something in your breaks causing a vacuum leak. Might check you master cylinder ect. My 95 did the same thing, and turned out it was my master cylinder.
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#4
12-14-2005, 07:51 PM
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Re: '93 5.7L idles at 200-300 rpm at a light
Watch for egr valve not seating pull it out and clean it. Does it miss or run roiugh or just idle low. How do you know the iac is working properly?
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#5
12-14-2005, 08:35 PM
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Re: '93 5.7L idles at 200-300 rpm at a light
yup, i agree on the EGR..
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