Engine knocking

TIMHAAK

MEMBER
FORD THUNDERBIRD

Hello, I own a 1993 ford thunderbird 5.0 V8 LX, just recently ive been hearing a subtle knocking noise. This only occurs after driving for a while, I drive to school everyday for 8 miles and it dosent start till the last 2 or 3. The noise only occurs during normal acceleration after I have driven for about 5 or 6 miles. Can you advise me as to what may be wrong>(yesterday I checked it out and I was low on coolant so I refilled that but today the sound persisted.)? The spark plugs are new, it has a new transmission(september 2007) it has 80,000 miles. Any help would be much appreciated

3 Replies

RASMATAZ

MECHANIC
75,992 POSTS

When the last time you change oil/filter? If the knocking is coming from inside the engine better stop driving it and check the oil pressure.

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Sunday, November 25th, 2007 AT 5:08 AM

TLAWFORD1

MEMBER
1 POST

I think we are having similar problems. Here is where I am so far with my knocking problem. When ambient air temp gets above 70F, and engine has come up to operating temp, if you either try to go 70 or kick down into passing gear at any speed above 40, it makes a knocking sound, MIL code 0174 bank2 too lean. (Which I would expect from misfiring letting too much unburned O2 go out exhaust = 0174) It is totally dependant on ambient air temp. Below 50F wont do it and gets 19MPG, at 80F does it badly and gets 11MPG. Makes me suspect that ambient temp under hood (not block temp) is affecting some component. Current suspect is the transistor unit sending 12 volt pulses to ign coil, called EDIS-8 or sometimes ICM ignition control module? I have replaced all O2 sensores, plugs, ign wires, fuel injectors, fuel filter and air filter = no change. QUESTION: Where is the EDIS-8 (Electronic Distributorless Ignition System) control module located?