what do i have to replace to fix the tapping and poor performance . 88 cougar valve lash

Asked by Jul 27, 2015 at 08:08 PM about the 1988 Mercury Cougar

Question type: Maintenance & Repair

2 Answers

83,815

New valves, heads redone. If you can have it done cheep, then do it...If not the repair will be more then the car is worth...

2 out of 2 people think this is helpful.
56,855

Could be the knock sensor is picking up the valve tap and severely retarding the ignition timing. If it lacks power, runs hot or boils over, and the transmission is shifting late that's what I'd suspect. Disconnect the knock sensor(s) and see if that improves things. If you have a knock sensor module disconnect the knock sensor wire there so it won't trigger the check engine or service engine soon light. I had to do that very thing with my '93 Caprice once it developed a valve tap. HTH. -Jim

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Search Mercury Cougar Questions

Mercury Cougar Experts

#1 lisagayle
lisagayle
Reputation 2,070
#2 Tom Demyan
Tom Demyan
Reputation 660
#3 FordNut
FordNut
Reputation 610
View All

Related Models For Sale

Used Ford Mustang
718 Great Deals out of 39,137 listings starting at $1,000
Used Ford Thunderbird
29 Great Deals out of 1,144 listings starting at $6,995
Used Chevrolet Camaro
629 Great Deals out of 39,687 listings starting at $2,995
Used Mercury Grand Marquis
32 Great Deals out of 2,236 listings starting at $1,500
Used Ford F-150
3,481 Great Deals out of 207,574 listings starting at $1,273
Used Pontiac Firebird
12 Great Deals out of 842 listings starting at $3,800
Used Dodge Charger
545 Great Deals out of 29,488 listings starting at $2,343
Used Honda Civic
1,172 Great Deals out of 67,655 listings starting at $1,500
Used Chevrolet Corvette
369 Great Deals out of 20,435 listings starting at $3,688
Used Cadillac Eldorado
432 listings starting at $2,990
Used Chevrolet Caprice
174 listings starting at $10,900