I have a 1997 cougar 4.6 V-8. I had to replace the intake manifold, common problem I understand. It had a knocking sound that scared the **** out of me. Any how. there is a code that says I am running too rich on one side. I am sorry i do not have the code that came up. I have checked everything I can and I can not find the cause. Car still has lots of power but when code clears it seems to be way better along with fuel economy. Any thoughts would help big time. Oh and I'm replacing the front brakes tomorrow lol. I bought the care from a fellow who bought it at 72 yrs old and only 108 kms. he can no longer drive it and when the intake went he said it was time to sell. I have watched this car for 12 years.

SOURCE: Heater hose connecter pulls out of intake manifold

Try cleaning the tube and manifold where they connect (use small wire brush or?). I would try using JB Weld @ the fitting before i would even consider a new intake. Water pressure in the cooling system shouldn't be much over 15-18 lbs. so doing this quick fix should solve the problem.

Colin Stickland

• 22516 Answers
• Posted on Jan 07, 2011

SOURCE: I have a 1997 mercury cougar xr7 v6 3.8l I just

to be totally honest here i would need to drive it and see it when it plays up ,and i do feel that the advice given was good advice ,but to diagnose it correctly it would have to be running rough to diagnose it ,i suspect the previous owner knew something was amiss and getting worse so sold it it quick .The problem could be a wiring loom problem with the plastic insulation breaking up in the loom or a dodgy connection ,even a faulty ECU ,Ask a local mechanic to have a look for you ans see what he says

Testimonial: "Thank you"

SOURCE: I bought a 1997 Mercury Cougar about 5 months ago.

By your description, I tend to agree with fuel pump issue. Could be something as simple as a connection on the pump -loose ground and/or power wire or an intermittent pump. At 83,00 that's far from being "over the hill" Also just a thought, converter(s) might be clogged and would give similar symptoms.

Testimonial: "Thank you c1apton15, I will print out your solution and show my brother. Again thanks for your help I hope you have a great day. -Matt"

SOURCE: 94 mercury grand marquis LS

Hello, There is a fuel cutoff switch in the drivers side of the trunk. It is referred to as the Inertia sensor. It will detect an impact and disconnect the power to the fuelpump.

If you look at the drivers side of the carpeted trunk there will be a slot in the carpet or a hole. All you need to do is push on the switch button and the system will reset. If you have air ride the Inertia switch is next to it.

SOURCE: I had the fuel pump

there is a vent system on the top of the fuel tank, when they replace the fuel pump they have to unhook the system, so they either forgot to hook the system back up or they brook one of the vent lines or valves, we see this quite often the lines are some what fragle and have to be handled with care. but you need to return to the shop were they instaled the pump and have them do a smoke or pressure test on the vent system. it should be a farly quick repair...good luck

let me know if there is any thing else you need.