Pls help with misfire - Mustang Evolution

Go Back   Mustang Evolution > 1979-2015 Mustang GT || Tech and Talk > 1979-1995 Mustang GT



Reply
 
Thread Tools Search this Thread
Please support our sponsors and let them know you heard about them here!
Old 02-02-2016, 08:59 PM   #1
Registered User
Newbie
 
Join Date: Feb 2016
Location: Cayce
Region: South Carolina
Posts: 2
Pls help with misfire

Hey all, I am new to this forum and hoping for some knowledgeable help. Recently purchased a 1994 GT 5.0 5spd with 80,000 miles. Has heavy skip from idle to about 3k rpm. I drove it home (almost an hour) and it did well except for the miss. Got home checked under the hood # 4 plug wire was off. Thought that was it, went ahead replaced wires, plugs, coil, cap and rotary button also checked and set timing at 10* btdc with spout connector out. Started the car still has heavy miss. Removed the converters and stock mufflers and replaced with new ones. Removed smog pump, capped vacuum lines and lines going to heads. Removed cleaned and bead blasted EGR valve, hooked back up is working properly. Replaced upper plenum gaskets. Still has miss. Checked codes via KOEO/KOER showed coolant temp sensor fault and 542 fuel pump bad ground/open. Replaced coolant temp sensor cleared codes ran again. still had skip. Pulled codes again still getting 542 and now a 137. Anyone have any ideas what to do next, sorry post is so long just wanted to cover what has already been done.
jessevjames89 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 02-03-2016, 07:53 AM   #2
Staff
Regular
Staff
 
scottydsntknow's Avatar
 
Join Date: Apr 2013
Location: JB MDL
Region: New Jersey
Posts: 16,579
The PIP in the distributor is notorious for going bad in these cars. That would probably be my next step.

Sent from my LG-D801 using Mustang Evolution mobile app
__________________
2000 Mustang GT Steeda #0048

Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.
scottydsntknow is online now   Reply With Quote
Old 02-03-2016, 10:19 AM   #3
Registered Member
Regular
 
smurf stang's Avatar
 
Join Date: Mar 2014
Location: Miami
Region: Florida
Posts: 1,341
Scotty has got you pointed in the right direction as those nasty little PIP's are prone to crapping out even on fresh dizzy. That is where I would start also but also check fuel pressure.
__________________
2016 VW GTI 2.0 Turbo

1989 Sonic Blue LX Coupe, 349 ci, TW heads, TFS Track Heat Intake, 75mm Accufab TB, 80mm ProM, 30 lb. inj, TKO, 3.73, 31 spline w/ TruTrac, MAC 1-5/8" LT headers w/ H pipe, Flowmaster, electric fan Moates QH
391 rwhp & 424 rwtq...Mustang Dyno 11.5@122mph
smurf stang is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 02-03-2016, 10:32 AM   #4
Registered User
Newbie
 
Join Date: Feb 2016
Location: Cayce
Region: South Carolina
Posts: 2
thanks for the replies, will try the PIP next, hopefully that does it. Have a great day.
jessevjames89 is offline   Reply With Quote
Old 02-03-2016, 12:01 PM   #5
Staff
Regular
Staff
 
scottydsntknow's Avatar
 
Join Date: Apr 2013
Location: JB MDL
Region: New Jersey
Posts: 16,579
PIP will need a shop press to do properly just FYI. Or you can replace the whole distributor. If you pull the cap and look down in there and see a silvery powder the PIP is very likely bad.
__________________
2000 Mustang GT Steeda #0048

Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.
scottydsntknow is online now   Reply With Quote
Old 02-05-2016, 01:59 PM   #6
Registered User
Newbie
 
Join Date: Jan 2016
Location: Dover
Region: Delaware
Posts: 1
Next on my list pull the plugs and run compression check.
72Draggin is offline   Reply With Quote
Old 02-07-2016, 09:11 AM   #7
Registered Member
Regular
 
wbrockstar's Avatar
 
Join Date: Mar 2015
Location: Nashville
Region: Tennessee
Posts: 289
The info in the following link will help you test the pip sensor.If your symptoms dont occur or they intensify once the engine reaches operating temp,start the engine & let it warm up before you test the pip sensor.
If the sensor turns out to be defective & you decide to replace it instead of buying a whole distributer,the second link below details the entire removal/replacement procedure for the pip sensor.However,if you've got the funds,you're much better off buying a remanufactured or aftermarket distributer,since pip sensor replacement is a pain in the *** for some.
SBFTech.com TFI Module/Hall Sensor Testing Procedure
TFI PIP Sensor Replacement Procedure
__________________
91 LX 342ci(10.5:1)
TFS 190cc(stage ll)
TFS track heat
XE276HR .544" .544"
Flowtech 1 3/4"
Prochamber w FM
wbrockstar is offline   Reply With Quote
Reply

Lower Navigation
Go Back   Mustang Evolution > 1979-2015 Mustang GT || Tech and Talk > 1979-1995 Mustang GT

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Need help pls pls pls pls pls Ranger052 Mustang Paint, Appearance & Detailing 17 09-25-2014 05:49 PM
Im new here and need some help pls 671stang Pre-2005 V6 Mustang 7 10-23-2013 10:08 AM
Problem help pls!!! d_1212 1996-2004 Mustang GT 3 10-09-2012 12:50 AM
A/C prob. Help pls? Jinielle 1996-2004 Mustang GT 11 09-22-2012 08:19 AM
Guys help me out here pls!!! 99saleen87 The Bar 10 03-28-2011 04:29 PM

» Like Us On Facebook



03:19 AM


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0

MustangEvolution.com is in no way associated with or endorsed by Ford Motor Company.