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Like I said... I replaced the timing belt, tensioner (it was what broke,) timing belt guides and water pump.
Before the car died it had a nasty miss when under acceleration. Now that it runs again IT STILL MISSES (not that expected it to heal itself while it sat for a year and a half.)
I have tried several types of sparkplugs.... no help
I have put on new plug wires.... no help
I replaced the connector to the #1 injector.... no help
I replaced the air filter.... runs better!
I cleaned everything on the top of the engine with degreaser
The miss started after the top radiator hose broke and sprayed coolant everywhere under the hood. A mechanic said that this was probebly coincidental, but I don't think so.
Could the coilpack be intermittant?
Could this be the fuel filter?
IT ALSO SEEMS TO HESITATE UNDER ACCELERATION A BIT.
There is an occasional miss fire where I can hear a tiny backfire under the hood (in the intake.. not the exhaust.)
ANY IDEAS?
Danny Brown
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Joined: Apr 2001
Posts: 9,442
Addicted CEG\'er
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Do you have a check engine light on?
My exhaust camshaft was on off one tooth. Didn't misfire too much, but I did lose exeleration.
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The "Check Engine" light IS NOT comming on.
I might be noticing that it misses more after it gets warm.
I don't think it is because of either crankshaft being "off by a tooth" because I used a piece of steel placed in the alignment grooves on the camshafts and that will not allow them to be wrong. On the otherhand, it is possible that a pulley on one of the crankshafts could have moved a bit. They look correct though...
SO FRUSTRATING!!
DB
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Posts: 133
CEG\'er
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CEG\'er
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Originally posted by dbbubba:
Like I said... I replaced the timing belt, tensioner (it was what broke,) timing belt guides and water pump.
Before the car died it had a nasty miss when under acceleration. Now that it runs again IT STILL MISSES (not that expected it to heal itself while it sat for a year and a half.)
I have tried several types of sparkplugs.... no help
I have put on new plug wires.... no help
I replaced the connector to the #1 injector.... no help
I replaced the air filter.... runs better!
I cleaned everything on the top of the engine with degreaser
The miss started after the top radiator hose broke and sprayed coolant everywhere under the hood. A mechanic said that this was probebly coincidental, but I don't think so.
Could the coilpack be intermittant?
Could this be the fuel filter?
IT ALSO SEEMS TO HESITATE UNDER ACCELERATION A BIT.
There is an occasional miss fire where I can hear a tiny backfire under the hood (in the intake.. not the exhaust.)
ANY IDEAS?
Danny Brown
Are one of the 'several types of sparkplugs' Motorcraft fine wire plugs ? Your problem sounds familiar, I did the same thing. Go buy the fine wire, low resistance plugs, the Motorcraft plugs. Nothing else will work, and they will misfire on gentle acceleration, but not at wide open/high rpm acceleration ? I think you might be surprised by the difference in new, correct plugs.
Ken, 99 Silver Frost SE Zetec Atx, polished alloys, Kumho's, Pioneer hi power CD/AM/FM. Factory spoiler (added) Audi side lites, Borla stainless steel muff. Stolen, recovered in pieces. Looking for another Tour, preferably V6, 5 speed.
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It's advisable to include pertinent info in the thread. Most people will not bother to look it up.
If you busted a hose, did the engine overheat?
Was the valve cover under pressure? Test PCV fresh air tube for suction.
You should probably do a compression test. A blown head gasket would seem like a miss. This could also explain extra blowby forcing oil out of the torn valve cover gasket.
"Those who cannot remember the past are condemned to repeat it" -George Santayana
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No, it definitely didn't overheat.
The hose broke just as I pulled into a parking lot.
The hose had 165K on it!
I know what a leaking head gasket is like and this isn't like that (I've seen it happen to three cars before.)
Besides, there would probebly be water in the oil (which there isn't) and the engine would overheat.
It is the same regardless how long the car is driven.
I have driven it 70 miles per day for two weeks and it runs fine once it is at a sustained speed. It also idles fine until it is put in gear.
The tiny oil leak was just because I pulled the valve cover gasket off several times before I figured out where TDC was.
It was nicked and kinked.
That's what I get for trusting the Haynes manual completely!
Ask me about the Chilton manual that instructed me to tighten head bolts on a 350 small block Cevy at 103 ft lbs!
The text from the diesel engine was inserted in the gasoline section! I almost followed the instructions!
The miss definitely seems electrical.
In fact, once when the hood was open during a sudden un-expected downpour the miss actually got worse.
I was having to jumpstart the car during a light rain which got heavy before I closed the hood.
I am leaning towards the plugs being the wrong type.
I will try that.
I also need to put in a new fuel filter.
But who knows?
DB
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Joined: Jun 2003
Posts: 133
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Originally posted by dbbubba:
I am leaning towards the plugs being the wrong type.
DB
Well, you can lean, or you can do, my advice is to lean forward, over the radiator while you're spinning your plug wrench. I'm telling ya, I about pulled my hair out looking for the cause of my miss. Until I put in Motorcraft fine wires, and just like it came, suddenly, it went away, suddenly.
Ken, 99 Silver Frost SE Zetec Atx, polished alloys, Kumho's, Pioneer hi power CD/AM/FM. Factory spoiler (added) Audi side lites, Borla stainless steel muff. Stolen, recovered in pieces. Looking for another Tour, preferably V6, 5 speed.
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Joined: Oct 2002
Posts: 365
CEG\'er
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CEG\'er
Joined: Oct 2002
Posts: 365 |
Originally posted by dbbubba:
No, it definitely didn't overheat.
The hose broke just as I pulled into a parking lot.
The hose had 165K on it!
I know what a leaking head gasket is like and this isn't like that (I've seen it happen to three cars before.)
Besides, there would probebly be water in the oil (which there isn't) and the engine would overheat.
It is the same regardless how long the car is driven.
I have driven it 70 miles per day for two weeks and it runs fine once it is at a sustained speed. It also idles fine until it is put in gear.
The tiny oil leak was just because I pulled the valve cover gasket off several times before I figured out where TDC was.
It was nicked and kinked.
That's what I get for trusting the Haynes manual completely!
Ask me about the Chilton manual that instructed me to tighten head bolts on a 350 small block Cevy at 103 ft lbs!
The text from the diesel engine was inserted in the gasoline section! I almost followed the instructions!
The miss definitely seems electrical.
In fact, once when the hood was open during a sudden un-expected downpour the miss actually got worse.
I was having to jumpstart the car during a light rain which got heavy before I closed the hood.
I am leaning towards the plugs being the wrong type.
I will try that.
I also need to put in a new fuel filter.
But who knows?
DB
Here's what happened to my '98 CSVT ... and how it was fixed.
I had the engine "bucking" problem at low/no throttle similar to your problem and described in previous posts. It began with uneven accel and a change in the exhaust note, gradually worsened into a severe and re-creatable misfire-like condition (that did cause it to throw codes -- ultimately irrelevant -- and light up the CEL three times), then got to the point where the engine began to flat-out quit under load.
Because the car was at 54.8k, the basics were covered first: replaced fuel filter (Purolator), plugs and wires (Motorcraft). No money wasted -- but no fix, either.
Long story made short: the conscientious guys at the independent repair shop I've been using since my relo to Pittsburgh (Vince's Automotive on Rte 19 in Perrysville, for CEGer's in Pittsburgh) first rescanned the codes, then found a TSB that looked like a possible match with my problem: erratic engine performance triggering multiple codes. It was a match -- A 7-volt wire at the right-rear of the engine compartment, feeding power to 4 sensors, was being chafed at the right-rear engine lift mount; its sheathing had been worn through. Every time engine movement (or Dave, the tech at Vince's) brought it into contact with metal, the four sensors would freak, causing a misfire and/or kill the engine.
Sheathing was repaired; the chafing point of contact was covered with a short section of (I think) neoprene tubing; and the problem is gone.
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Hard-core CEG\'er
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Get a spray bottle of water. With the engine running,Spray one plug at a time. Then one wire at a time. Spray the coil pack. Pick areas to spray (one at a time until the miss occurs. Once you know the location, check all wires and connections in the area. Also, check coil pack ground. Check vacuum lines.
My name is Richard. I was a Contouraholic.
NOW: '02 Mazda B3000 Dual Sport, Black
BEFORE: '99 Contour SE Sport
Duratec ATX Spruce Green
PIAA 510's, Foglight MOD, K&N Drop-in
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New CEG\'er
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Originally posted by Kennard:
Originally posted by dbbubba:
I am leaning towards the plugs being the wrong type.
DB
Well, you can lean, or you can do, my advice is to lean forward, over the radiator while you're spinning your plug wrench. I'm telling ya, I about pulled my hair out looking for the cause of my miss. Until I put in Motorcraft fine wires, and just like it came, suddenly, it went away, suddenly.
I echo Kennard's statement here. Put in the Motorcraft I struggled over mine for way too long, always discounting the plugs since they were new, twice(Autolites). Since my Motorcraft install problem hasn't returned  about 800 miles or so of driving! Good Luck
99 SE MTX
KKM intake
res removed
Diablo Chip
Ford 9mm sport wires
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