This is topic Prob with high mileage '94 5.0 in forum Tech Talk at Northern California Ford Owners .
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Posted by 94gt (Member # 3060) on
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Hey guys, nice board you have here!
I recently bought a auto '94 gt with 114000 miles on it (it was really the only one in my price range) and when I tested it out everything sounded fine. The previous owner did tell me that it consumes a little bit of oil, but nothing bad.
Well, now when I drive it out on the highway or around town, and I depress the go pedal, at about 3500-4000 rpm I get this loud clacking sound. It doesn't make the sound if I take it out of gear, and rev it real high in neutral tho... It seems to only happen when the engine is warm, also.
I had a friend check my timing, and its right at 12, I changed the spark plugs, and the old ones were the wrong kind (too short), and I use 76's 91 octane.
Thanks in advance for any help/ suggestions. ![[patriot]](graemlins/patriot.gif)
Posted by hidnn.o.s. (Member # 1219) on
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Exhaust leak ![[Confused]](confused.gif)
Posted by 94gt (Member # 3060) on
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well, I didnt mention this tho.. the drivers side Mac muffler had a 3 inch (almost circular) hole in it that I patched using one of those kits you can buy at Kragen, which seemed to help. (and Im saving up for an offroad x-pipe)
Why did you suggest the exhaust? Im an electrician, and am dying to learn all i can about autos!
thx!
Posted by hidnn.o.s. (Member # 1219) on
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When you said your revved it in neutral and it didn't make that sound I ruled out the engine, and the exhaust just jumped out at me. Those kits help, but don't fix. Try starting there and get a new muffler on there.
Goodluck
Posted by 94gt (Member # 3060) on
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ok, ill do that, but why the xhaust?
Posted by Cobra5.0Jeep (Member # 1482) on
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exhuast will make a ticking noise if it has a leak in it. Sometimes it will only do it underload (in gear) and sometimes it won't. My Bros bronco has hella exhuast leaks and sounds like its running straight headers when its in park but when he shifts into gear it gets really quiet.
Posted by 94gt (Member # 3060) on
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hmmmmm, it makes the noise when the engine is warm tho, wouldnt it make it all the time with the exhaust? it wtill has the stock headers, cats, and from from there it has Mac mufflers.
thx!
[ July 13, 2003, 10:52 AM: Message edited by: 94gt ]
Posted by JohnB (Member # 969) on
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I think I just need to take a ride in it... ![[Whoo Whooooo!]](graemlins/woowoo.gif)
Stop by this afternoon, we'll take it out and figure out what's up with it.
Posted by 94gt (Member # 3060) on
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allright man, if its not toomuch of a problem! I really appreciate it!!
Posted by st5150 (Member # 51) on
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For the record, 114K miles isn't considered high milage for a 5.O. I think the vast majority of 5.O's here have well over 100K miles on them and I don't remember the last time I read a "My 5.O pooped on me" post.
Posted by Red95PonyGirl (Member # 3027) on
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I was just thinking the same thing, but you will want to find out what the "clacking" is. ![[Smile]](smile.gif)
Posted by HungryHippo (Member # 537) on
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could be detonation, try cleaning the maf sensor element
Posted by 94gt (Member # 3060) on
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well, i did pull that out, and the 2 (i hope thats right for stock) fine threads of what appears to be copper wire are intact and looked clean...
Im gonna try some octane booster, and hopefully that will help out some!
thanks to all for your help!
Posted by sevenliter95 (Member # 786) on
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quote:
Originally posted by 94gt:
well, i did pull that out, and the 2 (i hope thats right for stock) fine threads of what appears to be copper wire are intact and looked clean...
Im gonna try some octane booster, and hopefully that will help out some!
thanks to all for your help!
Octane boosters are worthless, they don't work for shit, please don't waste your money
Posted by 94gt (Member # 3060) on
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why do you say that?
besides, in higher-mileage engines that havent seen alot of WOT, ive read that carbon build up is a big issue... and thats what I might have.
and as far as the exhaust, i would like to get somthing in the side exhaust dept... and suggetions?
Posted by sevenliter95 (Member # 786) on
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quote:
Originally posted by 94gt:
why do you say that?
besides, in higher-mileage engines that havent seen alot of WOT, ive read that carbon build up is a big issue... and thats what I might have.
and as far as the exhaust, i would like to get somthing in the side exhaust dept... and suggetions?
I say that because I made the mistake of buying that expensive shit thinking the "7 octane point boost" would give me 98 octane only to find out it truly only boosts it .7, making it 91.7 octane ![[Roll Eyes]](rolleyes.gif)
Not to mention it did not stop my pinging problem. So that is why I say they don't work.
Posted by 94gt (Member # 3060) on
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hmmm, i guess ill have to check it out a bit closer then eh?
Posted by 91sleeper (Member # 779) on
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Skip the octane boosters they are a waste of your hard earned money.
If your worried about carbon build up go with a good fuel system cleaner/treatment and/or injector cleaner.
Posted by sevenliter95 (Member # 786) on
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quote:
Originally posted by 91sleeper:
Skip the octane boosters they are a waste of your hard earned money.
Posted by 94gt (Member # 3060) on
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hmmm, ok. how long should I run drive it until I notice a change?
Posted by hidnn.o.s. (Member # 1219) on
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EXHAUST ![[Big Grin]](biggrin.gif)
Posted by 94gt (Member # 3060) on
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why do you think it would be exhaust? Im interested in hearing why! Im looking at something in the side exhaust dept... (cats or no cats, headers to all the way back)
Mainly, it does it when ive been driving for a bit and when the temp of the engine is up to about the middle of the "normal" gauge.
it only happens when I floor it, but not if i have the pedal about 3/4 of the way down! ![[Frown]](frown.gif)
[ July 15, 2003, 03:23 PM: Message edited by: 94gt ]
Posted by kwikrob (Member # 835) on
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Where at in the car is it making the noise? Under the hood? Under the car? If it is under the hood, it sounds as if you have a burnt gasket or possibly a cracked exhaust manifold. That just happened on my aunt's honda. They are made of cast iron and can crack. The reason it is doing it when you floor it is because the exhaust is being forced out of the motor faster and will look for the easiest path to escape out of. Mufflers and cats offer a lot of restriction and it would be easier to just escape out a crack or gasket, right? At partial throttle, your car isn't under a demanding load.
Posted by J's DDLY SNK (Member # 2016) on
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quote:
Originally posted by 91sleeper:
Skip the octane boosters they are a waste of your hard earned money.
If your worried about carbon build up go with a good fuel system cleaner/treatment and/or injector cleaner.
I use the STP brand Fuel system Cleaner and it really work! I usually get a putter at high RPM's but after the treatment -no mo putter-
wait till your gas is totally empty, then fill up with cleaner.
Oh, I would also check for any exhaust leaks and go from there.
Posted by 94gt (Member # 3060) on
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damn, I hope its not a blown head gasket! I had a friend look at it, and he didnt think it was that!
I will do a good leak check on the exhaust parts, as it might be from the right header (its from under the hood, on the passenger side)!
thx guys!
Posted by kwikrob (Member # 835) on
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exhaust gasket, not head gasket. then you would have a shitload of water. start the car, rev it up and have your buddy tell you where the sound is coming from
Posted by 94gt (Member # 3060) on
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quote:
Originally posted by kwikrob:
exhaust gasket, not head gasket. then you would have a shitload of water. start the car, rev it up and have your buddy tell you where the sound is coming from
thats the problem, it only does it when the engine is warmed, and when im driving. it wont do it if i rev it while im driving if i pop it into neutral for a sec, but it will do it otherwise, it tends to stop when I reach about 60-65.
besides, i dont think i could find some one that would lay under the hood while i drove! lol (kidding)
thanks!
Posted by 94gt (Member # 3060) on
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ok, here's an update on this old-ass post! ![[Razz]](tongue.gif)
I replaced the entire exhaust system (see sig), put in an stock thermostat, new water pump, changed the oil, had JohnB check my timing, bought a MAC CAI kit and replaced the o2 sensors.
The clacking sound went away for along time, until I drove past concord recently, and it was very hot that day too, and it came back! I made sure I have no air in my cooing system, and let it cool down, and now its back, even after I changed the oil a few days ago! I did notice the check engine light come on, but I am waiting to borrow a reader do make sure I have the correct code.
Recently I talked to the previous owner and he suddenly rememebers that he and his dad had the same problem with it, and they had (somehow) narrowed it down to the #1 piston. Sadly, I didnt hear it as all when I test drove it 3 times (and I kept slamming the pedal to the metal!)
Also: When I had the car firmly in my possesion, I noticed that he negelcted to take off his NOS sticker... I also can see places down in the shifter area where switches were previously installed, as well as a hole above the defrost button, and one in the driver's side A pillar.
I also found what seemed to be some wiring sloppily left in the engine compartment that ran under the dash area in side. Being the neat freak I am, i pulled them out, and noticed what seemed like a "y" shaped soldering job that had 2 diodes on it that was located in the drivers side kick panel in a wire bundle, I cut it out and re-spliced where it had been soldered into.
I also found (by luck) a wire around and underneath the steering column that is located under the panel that your knees bump into if you are short. The was a cold solder joint, and I dont currently own a soldering iron, yet. So I did my best to shave off the solder and attemped to splice it as best as I could with out a soldering kit.
I know it will end up being a rebuild, JohnB tells me its piston slap!
Does anyone know where I could buy the Ford Service Manual for my stang? I realllllly wanna know where and what the hell those 2 soldered wires go to!!!
Thanks!
[ October 03, 2003, 04:00 PM: Message edited by: 94gt ]
Posted by 94gt (Member # 3060) on
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ttt
Posted by 94gt (Member # 3060) on
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? ttt
Posted by JohnB (Member # 969) on
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A Chilton's should have this wire in it's diagram. Also, is there power currently to it? This scunds like it is the wire that may have been used for the solenoids of the N2O system. I wouldn't worry too much with it.
Posted by 94gt (Member # 3060) on
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im just worried that the 2 wires that were cut go to something important, and its getting only partial voltage... Ill go and check for power at both places in a bit!
Thanks man!
Posted by NavidR (Member # 3164) on
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this is not an exhaust leak....What is going on with your car is that your pinging.... trust me all the 94-95 mustang ping with high mikes.
To do list:
1st change your MAM, upgrade for get a better one.
2nd clean your injectors.
3rd replace your fuel filter
4th replace your fuel relay...
this should fix it, trust me I've owned 1-94 and 1-95 and they both did the same thing.
[ October 04, 2003, 01:42 PM: Message edited by: NavidR ]
Posted by slidewayz94 (Member # 3101) on
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mine did it too 94-95's had this problem.
Posted by 94gt (Member # 3060) on
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quote:
Originally posted by slidewayz94:
mine did it too 94-95's had this problem.
what did you do to fix it?
what size/ maker of a maf should I go with? I was looking at a CL 76mm...
so besides ohming the injectors out what would you reccomend to clean them out with? or should I replace them?
I was actually gonna replace the fuel filter this week anyhow, just to be safe...
I see that the fuel pump relay is, located in the CCRM (constant control realy module) where is that exactly? the book isnt too clear on that!
Thanks!!!
[ October 04, 2003, 03:05 PM: Message edited by: 94gt ]
Posted by 94gt (Member # 3060) on
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bump-izzle.
Posted by BarelyLegalGT (Member # 2312) on
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quote:
Originally posted by HungryHippo:
could be detonation, try cleaning the maf sensor element
My 1994 had MAJOR detonation.. we ended up replacing the fuel pump, fixed some vaccum leaks and cleaned out the MAF - problem solved & runs like a champion.
Posted by 94gt (Member # 3060) on
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I found a partially broken line that seems to be tied with the heater from the a/c system to the vaccume distro block (up by the brake booster) I replaced it with some slightly larger tubing. That would affect the vaccume, right? where are some other common trouble spots I should check?
also, today when I pulled the codes again, I got
a code 189 and 176, which the book doesnt even list 176... unless Im reading it wrong! Im doing via the MIL method.
Thanks guys!
[ October 05, 2003, 08:22 PM: Message edited by: 94gt ]
Posted by 91 5.0 (Member # 1527) on
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delete
[ October 06, 2003, 03:16 PM: Message edited by: 91 5.0 ]
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