i have a 90 with a 4.9 automatic. kills in reverse sometimes. has misfire at idle. any ideas?

175

Asked by May 13, 2013 at 07:08 PM about the Ford F-150

Question type: Maintenance & Repair

it needs an intake gasket and an egr valve. could that cause the engine to stall in reverse?

3 Answers

yes...yes it could...check all vacuum lines....replace the butyl rubber (troublesome and cracking) with silicone the type that cop cars use and the type that BMW uses-

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take the egr off and clean it with some spray brake cleaner and put it back....note it's operation...if its buggered, inoperative and gonzo, buy another and replace it~

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175

i smoke tested my truck and the egr valve was pouring smoke. i havent attempted to clean it. i did notice last night the vacuum line to it was unhooked about 6 inches down and re hooked it up and it didnt die today. but it does bog way down and sound like its going to die. i also got the intake gaskets and a new serpentine belt cause my old one was cracked badly. thank you for your input

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