spark plugs<\/a> causing that very concern. You will need to have a coil-on-plug stress test done. And the Ford dealership has the proper tools to perform this test. The coils when the start to fail, will cause what we refer to as a RF frequency that will cause that very concern. I also had this happen to my fathers 2000 Grand Marquis. I discovered this after replacing the ABS module at the cost of $250.00. I found 4 bad coils that would cause the ABS and Traction Control light to come on the vehicle would stall and\/or run rough on acceleration at 30-50 mph. Have some one do this test and this will fix your problem. Do not replace all 8 coils, unless you have the money. Only replace the ones that fail during the stress test.<\/p>\n","protected":false},"excerpt":{"rendered":"Engine cruising along, Trac. Control light starts flashing, engine bogs down loosing power. Also can be cold start, take off, Trac. Control light starts flashing, engine bogs down, no power. It is a 1999 Mercury Grand Marquis 4.6L GS. RESPONSE Traction Control Light Flashing Something you may want to try in the meantime. Turn the… Read More »Traction Control Light Flashing Mercury Grand Marquis<\/span><\/a><\/p>\n","protected":false},"author":14434,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[1,7],"tags":[447,11437],"class_list":["post-51117","post","type-post","status-publish","format-standard","hentry","category-auto-repair-questions","category-mercury","tag-grand-marquis","tag-traction-control-light-flashing"],"yoast_head":"\nTraction Control Light Flashing Mercury Grand Marquis - FreeAutoMechanic Advice<\/title>\n<meta name=\"description\" content=\"You may want to try this in the meantime. 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![\"2001](\"\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/uploads\/2015\/10\/2001-mercury-grand-marquis.jpg\")
Engine cruising along, Trac. Control light starts flashing, engine bogs down loosing power. Also can be cold start, take off, Trac. Control light starts flashing, engine bogs down, no power. It is a 1999 Mercury Grand Marquis 4.6L GS.<\/p>\n