You're not going to believe this!!!

FLA5.0 · Jun 27, 2004

Yesterday I posted a thread titled "Rough idle driving me nuts", begging for help with an erratic, rough idle in my 93 5.0. This was due to the fact that I had been battling this problem for about two weeks. I had pulled codes 14 and 19 from the ECU and performed the following actions which did no good:

Distributor...replaced
TFI...tested-passed
IAC...replaced
plugs...replaced
plug wires...replaced and upgraded
(2)o2 sensors...replaced
MAF...removed /cleaned
EGR valve...removed/cleaned
throttle body/EGR spacer...removed/cleaned
gaskets for all the above...replaced
Timing..set to 12 deg BTDC

Spent 300+ bucks and over 12 hours before I gave up and drove it 60 miles north to an old friend who owns a mechanic shop. Turns out the codes were actually 41 and 91...and the whole problem, (even the cause of the lean o2 condition), was a split vacuum line way up under the upper plenum!!!!!!! I AM SO STUPID!!! I guess it's true -- when all else fails...go back to the basics! BTW, Thanks White 95 5.0 for your help!

White 95 5.0 · Jun 27, 2004

No problem, Now spray that thing so I can have a good run

88stangmangt · Jun 27, 2004

how did you get that bad of a mess up???

Kevin R. · Jun 27, 2004

loL.......sdrawkcaB

FLA5.0 · Jun 28, 2004

88stangmangt said:
how did you get that bad of a mess up???

I bought a cheap Actron OBD I scanner. Apparently right before the scanner flashes codes during the KOER test, it sends one "Dynamic Response" flash. I misunderstood this single flash to be a 1 followed by a 4. Code 14 pertains to a loss of signal from the PIP (Profile Ignition Pickup). Therefore, I replaced the entire distributor, wires and plugs. As I said, I found out later that the codes were 41 and 91...not 14 and 19. It just snowballed from there...oh well, all the extra hardware must have done some good, she runs better now than ever!

87'GTstang · Jun 28, 2004

Just think of it as an excuse to have done what you did - you were probably going to get around to it one day anyway

Idwitheld-1` · Jun 28, 2004

FLA5.0 said:
Yesterday I posted a thread titled "Rough idle driving me nuts", begging for help with an erratic, rough idle in my 93 5.0. This was due to the fact that I had been battling this problem for about two weeks. I had pulled codes 14 and 19 from the ECU and performed the following actions which did no good:

Distributor...replaced
TFI...tested-passed
IAC...replaced
plugs...replaced
plug wires...replaced and upgraded
(2)o2 sensors...replaced
MAF...removed /cleaned
EGR valve...removed/cleaned
throttle body/EGR spacer...removed/cleaned
gaskets for all the above...replaced
Timing..set to 12 deg BTDC

Spent 300+ bucks and over 12 hours before I gave up and drove it 60 miles north to an old friend who owns a mechanic shop. Turns out the codes were actually 41 and 91...and the whole problem, (even the cause of the lean o2 condition), was a split vacuum line way up under the upper plenum!!!!!!! I AM SO STUPID!!! I guess it's true -- when all else fails...go back to the basics! BTW, Thanks White 95 5.0 for your help!

I had the exact thing happen to me...even the same hose in the same "hidden" location! I was so happy to have the return of touchless starting and a rock solid idle!!!

enyawix · Mar 16, 2006

Very thorough tuneup.

Where is the OBD1 connector on the 89 to 93 5.0? I want to do a very thorough tuneup.

sunil6784 · Mar 16, 2006

Near the driver's side shock tower...It's got a black cover on it, and says "EEC Test Port" I think...

Sounds like you did a very thorough tune up on it. Like you said, everything you did only made it run better. IMO that's always time well spent.

HISSIN50 · Mar 16, 2006

Wow, this baby's only a couple years old.

Daggar · Mar 16, 2006

Ya just gotta love Walmart special code readers. No more dot-dot-dash-dash-hooey. Just code numbers.

88_GT_5_oh · Mar 16, 2006

Daggar said:
Ya just gotta love Walmart special code readers. No more dot-dot-dash-dash-hooey. Just code numbers.

i still use an analog voltometer lol.... sometimes it takes me a couple times to get the codes cause i misinterpret them

oh well this is why i bought a PMS lol (well not the only reason)

Blakthorn · Mar 16, 2006

is there a list somewhere that tells you what every code/# means?

Euphoric306 · Mar 17, 2006

haynes manual

jrichker · Mar 17, 2006

Blakthorn said:
is there a list somewhere that tells you what every code/# means?

http://www.troublecodes.net/Ford/

The codes are listed, but there isn't much help on how to find and fix the problem that caused them.

That's what Stangnet is for.:SNSign:

Daggar · Mar 17, 2006

jrichker said:
http://www.troublecodes.net/Ford/

The codes are listed, but there isn't much help on how to find and fix the problem that caused them.

That's what Stangnet is for.:SNSign:

Yep... only here, the rule is that we must have you swap a $270 minimum in parts that have nothing to do with the problem before we turn you onto the real cure. Just make sure you buy American.

enyawix · Mar 17, 2006

What plugs? My plugs are so old they are rusting.

mustangphil · Mar 17, 2006

Eh, little dyslexia never hurt anyone.

Strype · Mar 17, 2006

Ummm... excuse me, why is this thread 2 years old???
Thanks!

Daggar · Mar 17, 2006

HoodStrype said:
Ummm... excuse me, why is this thread 2 years old???
Thanks!

Because enyawix opened the thread back up to ask a question which by the way, is exactly what you're supposed to do.

Search first
Reopen old thread vs. starting a new one

Welcome to Stangnet enyawix. It's nice to see a new face that actually knows how to use a forum from time to time.

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