2001 Ford Windstar - 3.8L Jerking Problem FIXED

autoxperts · Post by **autoxperts** » Tue Feb 14, 2012 1:26 pm

Car came in jerking and popping.

Changed plugs and wires only code was 301. Car has 145,000 miles on it and had never been tuned up; changed fuel filter, cleaned injectors. maf sensor is good. It ran better yesterday. Then today it is back to running the same way, it's not all the time. it's not throwing any codes now.

brother bubba · Post by **brother bubba** » Tue Feb 14, 2012 1:38 pm

...

I keep a known good coil pack around (painted red, test purposes only). That would be my next step

...

Tim Martin · Post by **Tim Martin** » Tue Feb 14, 2012 3:07 pm

Ahhhhhh. Aren't those the ones with the plastic intake manifolds that have them little orings that leaked so bad? While it may be a coil issue it is also worth the effort to check the air induction system including the MAF sensor. These engines, while they perform well do have some inherent problems.

steven kiser · Post by **steven kiser** » Wed Feb 15, 2012 3:06 am

If i recall correctly these have the EGR runners in the intake that will cause a skip at idle if they get plugged with something. The skip will lessen at higher rpm's and can be misleading. It can come and go. I agree with the intake and use carb cleaner to check for vac leaks and keep an extinguisher handy. I've seen the EGR port plugged more than a few times.

autoxperts · Post by **autoxperts** » Wed Feb 15, 2012 11:15 am

egr ports are good and intake is not leak n. i put a used coil pack on still the same , not for sure is good ive had it for about five yrs. with the scanner iam not getting any misfires will driving

Tim Martin · Post by **Tim Martin** » Wed Feb 15, 2012 12:13 pm

autoxperts wrote:egr ports are good and intake is not leak n.

Have you physically checked this? I know, it sounds like I am a know it all but unless something like 2+2 Gumcutter or ether is sprayed at the base of the intake plenum and rpms are actually checked at the same time it is not safe to simply assume that the intake is not leaking. I have had several of these that really took me for a long round until I was at the end of options and I replaced the plenum seals and the engine really straightened out. However, having said what I did, there could be an oxygen sensor biased rich and the PCM is leaning the fuel injectors. I have also seen that. It could also be an injector issue. Beings it is an 01 model, I would use mode six to assist in diagnosis.

rytek · Post by **rytek** » Wed Feb 15, 2012 12:38 pm

Yes, I agree that coils are common. Could be an injector like Tim said.

Is it idling rough, running rough at cruising speed, or ?

You didn't use the el cheapo Bosch platinum plugs, did you? We have seen those plugs cause misfires when brand new. What brand plugs and wires?

What did the freeze frame say for the original P0301? When the code was set, was the engine cold, warm, or hot? I have seen many intake gaskets leak and set a code only at certain temps.

Does your scan tool show cylinder misfire counters? Perhaps you can use the Mode 6 data to interpret which cylinders are starting to misfire.

Get out the vacuum gauge and check for a sticking valve or other anomaly.

Tim Martin · Post by **Tim Martin** » Wed Feb 15, 2012 6:53 pm

Ya know, you bring up an interesting point about spark plugs. Yes, on these newer vehicles, it often does not work to use lower priced plugs. Also, be aware that just because they are new does not mean they are good. Most of us have seen new ones right out of the box be defective. Having said that, that Windstar would be getting Motorcraft plugs. I realize I am stepping out to mention that but that's how we do it here.

steven kiser · Post by **steven kiser** » Fri Feb 17, 2012 3:06 am

If compression is good it still sounds like the egr issue. I've seen push rods that are slightly bent shortening the stroke along with push rods.

jbadenoch · Post by **jbadenoch** » Mon Feb 20, 2012 11:06 am

my vote is ign coil or module

autoxperts · Post by **autoxperts** » Sun Mar 25, 2012 11:38 am

it was a coil pack problem fix.thanks for all the help

brother bubba · Post by **brother bubba** » Mon Mar 26, 2012 6:31 am

autoxperts wrote:it was a coil pack problem fix.thanks for all the help

...

Glad we could be of assistance.

<Head growing two hat sizes>

...

rytek · Post by **rytek** » Mon Mar 26, 2012 6:35 am

You're welcome. So, I'll take a pepperoni-sausage-hot pepper pizza with a dozen hot wings. How about the rest of you guys?

2001 Ford Windstar - 3.8L Jerking Problem FIXED

2001 Ford Windstar - 3.8L Jerking Problem FIXED

Re: 2001 Ford Windstar - 3.8L Jerking Problem

Re: 2001 Ford Windstar - 3.8L Jerking Problem

Re: 2001 Ford Windstar - 3.8L Jerking Problem

Re: 2001 Ford Windstar - 3.8L Jerking Problem

Re: 2001 Ford Windstar - 3.8L Jerking Problem

Re: 2001 Ford Windstar - 3.8L Jerking Problem

Re: 2001 Ford Windstar - 3.8L Jerking Problem

Re: 2001 Ford Windstar - 3.8L Jerking Problem

Re: 2001 Ford Windstar - 3.8L Jerking Problem

Re: 2001 Ford Windstar - 3.8L Jerking Problem

Re: 2001 Ford Windstar - 3.8L Jerking Problem

Re: 2001 Ford Windstar - 3.8L Jerking Problem FIXED