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Originally posted is Zetec maintainance, but Im hoping I can reach a few more people here.
Hot or cold, the engine stutters really bad when I hold it just higher than idle, mabye 1/8" of pedal travel. Problem is, thats all I need to keep the car going at speed, so its getting really annoying. Any throttle position above that the engine runs fine. Throttle response in nuetral is great, unless I try to rev it slowly from idle, then it bogs pretty bad. In gear, once I get the pedal past that point, the car accelerates smoothly.
In the last few weeks, I have installed new Autolite platinum plugs (proper gap), new wires, and replaced the timing belt. The miss was there before any of this was done, but was barely noticable and has gotten worse since. Reset PCM with no change. No CEL. New TPS installed, no change.
What do you think? Coil? Now Im thinking it could be fuel realated.
-Ken V.
1998.5 SE Praire Tan Zetec ATX
psycho_bass@hotmail.com
Roush springs Roush rear sway bar BAT struts 17" Millie Miglia HT3 and a ton of subtle asthetic mods
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Originally posted by CRZYDRVR:
.... Reset PCM with no change. No CEL...
IAC valve, fuel or air filter.
"Always do the cheap and easy ones first."
1996 V6 ATX 96K miles
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I've changed my IAC, fuel filter twice and my air filter is new as well. I have not changed the TPS as of yet. I have a slight bogging just off idle as well. My fuel mileage isn't great either. I have no vacuum leaks and new plugs, coil and wires. No CEL either.
I'm thinking fuel injectors? Fuel preasure?
95 Contour GL. Bought new.
BAT Sway Bars/Pioneer CD/Koni Rear Struts/Mobil Fluids.
Looking for 15" alloy rims-PM me.
180,500km's so far.
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Originally posted by SquareHead:
..
I'm thinking fuel injectors? Fuel preasure?
A real time scan should determine that. You may want to get a scanner with that capability.
"Always do the cheap and easy ones first."
1996 V6 ATX 96K miles
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I had a real time scan done. The tech claimed it was running rich and the IAC was constantly trying to adjust as well as the MAF. He suggested one or more of the injectors might be dripping into the combustion chamber. I have no cels so that is what the findings were.
95 Contour GL. Bought new.
BAT Sway Bars/Pioneer CD/Koni Rear Struts/Mobil Fluids.
Looking for 15" alloy rims-PM me.
180,500km's so far.
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Posts: 17,248
CEG road warrior
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MAF? Never had it happen in the Tour (while driving) but had it happen in my Evo. The MAF ended up being dirty.
Hector
2003 Rally Red Mitsubishi Evolution VIII
257HP/259TQ
2005 Lapis Blue Mazda 6s
RET: 00 Cabernet Red Ford Contour Zetec ATX SUPERCHARGED
160HP/141TQ
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Originally posted by SquareHead:
.... ... He suggested one or more of the injectors might be dripping into the combustion chamber. ...
But the tech could not pin point which injectors were doing it?
Clean the MAF sensor as suggested by Hector.
"Always do the cheap and easy ones first."
1996 V6 ATX 96K miles
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Originally posted by Loco4G63:
MAF? Never had it happen in the Tour (while driving) but had it happen in my Evo. The MAF ended up being dirty.
Cool, I can try cleaning the MAF this weekend. After that I will look into replacing the IAC like Tony suggested.
Funny you mention it might be running rich, my Dad said it sounded like a rich miss.
-Ken V.
1998.5 SE Praire Tan Zetec ATX
psycho_bass@hotmail.com
Roush springs Roush rear sway bar BAT struts 17" Millie Miglia HT3 and a ton of subtle asthetic mods
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Originally posted by Tony2005:
Originally posted by SquareHead:
..
I'm thinking fuel injectors? Fuel preasure?
A real time scan should determine that. You may want to get a scanner with that capability.
Is this what you are talking about? If not, what should I look for?
-Ken V.
1998.5 SE Praire Tan Zetec ATX
psycho_bass@hotmail.com
Roush springs Roush rear sway bar BAT struts 17" Millie Miglia HT3 and a ton of subtle asthetic mods
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"Real-time monitoring, plotting, and logging of sensors.
(Ignition Timing, O2 Sensors, Fuel System, Air & Engine Temp, more!)"
Yup, that sounds like it.
Edit. Feedback doesn't show excellent. And pretty slow in delivery.
Last edited by Tony2005; 08/25/06 03:41 AM.
"Always do the cheap and easy ones first."
1996 V6 ATX 96K miles
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