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Old 06-05-2012, 12:49 PM   #41
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Posted via FF Mobile How much have you spent? Maybe would of been better of buying a new engine?
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Old 06-05-2012, 01:37 PM   #42
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[QUOTE=DrkKnight614;4199525]Posted via FF Mobile How much have you spent? Maybe would of been better of buying a new engine?[/Q

I bought this car used a few yrs ago because my 99 ford ranger 3.0 v6 used to much gas going back and forth to work especially I think after putting bigger tires on it....I figured I would get a little economical commuter car...I paid $1900 for it ...I think within the last 2 yrs, I've probably spent well over that on crap for that car....I was really wanting to keep it going because my Ranger is in excellent condition and just turned 91k miles..I try to use it sparingly...depending on the outcome of this major issue with the car, I may just have to use my beloved Ranger as my primary vehicle ....I really like my zippy little car but .......enough is enough......
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Old 06-05-2012, 02:31 PM   #43
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Sounds like classic ignition issues to me, and I'll third or fourth the suggestion about plug wires.

Intermittent misfires don't always cause Check Engine Lights or throw codes. You said the plugs and coil pack were replaced, the plug wires SHOULD have been replaced right along with them.

Chances are good now that your continued misfires from bad plug wires have damaged your new plugs, and possibly your new coil pack.

My suggestion - buy 4 new plugs and a NEW set of wires and replace them all at once, start fresh. Pray the coil pack isn't damaged (they are generally a little more robust than the other parts, so you might get off OK).
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Old 06-05-2012, 02:42 PM   #44
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Sounds like classic ignition issues to me, and I'll third or fourth the suggestion about plug wires.

Intermittent misfires don't always cause Check Engine Lights or throw codes. You said the plugs and coil pack were replaced, the plug wires SHOULD have been replaced right along with them.

Chances are good now that your continued misfires from bad plug wires have damaged your new plugs, and possibly your new coil pack.

My suggestion - buy 4 new plugs and a NEW set of wires and replace them all at once, start fresh. Pray the coil pack isn't damaged (they are generally a little more robust than the other parts, so you might get off OK).
I just looked at an old receipt...I had plugs , wires and fuel filter all changed at the same time...
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Old 06-05-2012, 07:40 PM   #45
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X2!! Also check your pcv/hose and booster hose, they collapse over time.
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IAC is on the bottom of the intake manifold although I don't think that's the culprit.
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What brand sparkplugs?
Motorcraft are recommended and tend to be the best option.

I wouldn't think anything you've replaced would have any bearing on the problem. Not sure who told you to replace all those things but, I would have more caution listening to them.

Has the A/C been serviced?
If not, it might have some bearing of the 'sputter'. Low system pressure can cause the compressor to cycle more often. Possibly often enough that the IAC can't compensate fast enough.


Backfiring and such sorta sounds like you may have a vacuum leak or the cam timing may be off.
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Posted via FF Mobile Ya check the PCV hose, those are a known issue.

...And again pcv hose or booster hose.
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Old 06-05-2012, 08:10 PM   #46
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[QUOTE=Mother Focus;4200130]...And again pcv hose or booster hose.[/Q

he did find a vacuum leak, but it didn't solve the problem...I will run the pcv and booster hose by him when I call him tomorrow...to late to call tonight...
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Old 06-05-2012, 08:11 PM   #47
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...And again pcv hose or booster hose.
he did find a vacuum leak, but it didn't solve the problem...I will run the pcv and booster hose by him when I call him tomorrow...to late to call tonight...
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Old 06-05-2012, 08:18 PM   #48
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After that reset the ECU as Drknight suggested.
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Old 06-05-2012, 08:20 PM   #49
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After that reset the ECU as Drknight suggested.
<sigh> I will...thanks
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Old 06-05-2012, 08:39 PM   #50
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Some of these modern cars use a dual speed fuel pump. I see were you mentioned the "fuel delivery module" was replaced per the recall, but the replacement may be bad or some other issue with fuel flow/pressure.
At higher RPM's the pump should run at a higher rate to increase fuel flow to the injectors. Checking idle pressure would should be easy. If ZETEC uses a dual speed pump, I don't know if there is a speacial procedure to check the higher rate. Another related simple part is the Fuel Pressure regulator.
(Just another item for your check list....)
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