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Matt, Engineer
Category: Ford
Satisfied Customers: 21990
Experience:  BEng hons Mech engineering, in auto industry 22 years
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Have a 1993 ford thunderbird 3.8l idles at 1500rpm and

Customer Question

have a 1993 ford thunderbird 3.8l idles at 1500rpm and cherry red exhaust manifolds any sujestions found a leaking egr valve want to block it and test run before purchasing new one
Submitted: 1 year ago.
Category: Ford
Customer: replied 1 year ago.
fuel pressure regulator is ok, exhaust system is ok let me know what is the fix for this problemCustomer
Customer: replied 1 year ago.
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Expert:  Matt replied 1 year ago.


to get cherry red exhausts at idle then I'd say its likely the ignition timing is very retarded?

so I'd start by checking the distributor is in the correct position and ideally set it up with a timing light

then set the idle speed with the throttle position stop

a leaking EGR will tend to cause the idle speed to drop so try blocking it off to set the idle and see how it runs before replacing the EGR valve

Expert:  Matt replied 1 year ago.


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