• Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

Tune Up Time

  • Thread starter Thread starter 85MustGT
  • Start date Start date Jun 25, 2004

85MustGT

Founding Member
Nov 8, 2001
95
0
16
Occupied San Diego
Jun 25, 2004
#1
  • Jun 25, 2004
  • #1
My 98 seems to be ok when I drive, however bucks, when my daughter drove it (with me in the car) being it has just turned 50,000 I was thinking a tune-up might be in order.

I pulled one plug out, was an Autolight, and though it looked good I am not sure if have ever been changed, since I have only had the car alittle over a year. So I am thinking plugs, wires, pcv, fuel filter. Were Autolights or Motorcrafts original in my car?

Why are those plug wires so pricey? what do you recomend for wires and plugs?
 
B

bdcardinal

tree hugger
Jun 10, 2003
3,612
16
69
santa barbara, CA
Jun 25, 2004
#2
  • Jun 25, 2004
  • #2
motorcraft were original in your car. however autolite and motorcraft are the same. how are the plugs pricey? i got a set of Autolite 764's from wally world 2 for $1.85. the ford racing wires are really good. also you should change the coolant, tranny fluid and diff fluid. for coolant use green prestone and tap water, for the tranny use mobil 1 atf, for the diff use a quality synthetic 80w80 or 70w140 depending on what your diff says. the platnium autolites are maybe $2-3 a plug. i personally use the coppers because it gives me an excuse to more closely inspect my motor, plus the coppers are a more consistant spark producer.
 

Dark Knight GT

I can't get it up......ok that didn't sound right.
May 26, 2003
3,653
2
56
Ozark, Missouri
Jun 25, 2004
#3
  • Jun 25, 2004
  • #3
bdcardinal said:
motorcraft were original in your car. however autolite and motorcraft are the same. how are the plugs pricey? i got a set of Autolite 764's from wally world 2 for $1.85. the ford racing wires are really good. also you should change the coolant, tranny fluid and diff fluid. for coolant use green prestone and tap water, for the tranny use mobil 1 atf, for the diff use a quality synthetic 80w80 or 70w140 depending on what your diff says. the platnium autolites are maybe $2-3 a plug. i personally use the coppers because it gives me an excuse to more closely inspect my motor, plus the coppers are a more consistant spark producer.
Click to expand...



In addition to what he said, change the fuel filter and pick up a bottle of complete fuel system cleaner and dump it in at the next tank fill up. Might also want to clean the IAC with some carb & choke cleaner.
 

85MustGT

Founding Member
Nov 8, 2001
95
0
16
Occupied San Diego
Jun 25, 2004
#4
  • Jun 25, 2004
  • #4
Dark Knight GT said:


In addition to what he said, change the fuel filter and pick up a bottle of complete fuel system cleaner and dump it in at the next tank fill up. Might also want to clean the IAC with some carb & choke cleaner.
Click to expand...

Why are the plug wires so pricey!

How do you clean the IAC?

 

Dark Knight GT

I can't get it up......ok that didn't sound right.
May 26, 2003
3,653
2
56
Ozark, Missouri
Jun 25, 2004
#5
  • Jun 25, 2004
  • #5
To clean the IAC, you just disconnect it, take it off, and spray it down with the carb and choke cleaner.
 

85MustGT

Founding Member
Nov 8, 2001
95
0
16
Occupied San Diego
Jun 25, 2004
#6
  • Jun 25, 2004
  • #6
There is no gasket or anything that needs to be replaced when cleaning the IAC?
 
B

bdcardinal

tree hugger
Jun 10, 2003
3,612
16
69
santa barbara, CA
Jun 25, 2004
#7
  • Jun 25, 2004
  • #7
no gasket needs to be replaced. the plug wires are expensive because they arent like a generic v8 spark plug wire. you have the coil packs and then the spark plugs have a deep boot. the coil packs have a different style connector that are unique to fords.
 
B

bdcardinal

tree hugger
Jun 10, 2003
3,612
16
69
santa barbara, CA
Jun 25, 2004
#8
  • Jun 25, 2004
  • #8
o, also as was said earlier get some throttle body cleaner and clean your throttle body and use some Seafoam.
 

1tirefire

New Member
Jun 2, 2004
118
0
0
Northern Bay FF/SS
Jun 25, 2004
#9
  • Jun 25, 2004
  • #9
let your car warm up and then use a vacuum line to connect a hose from your plenum to the can of seafoam. It'll smoke for a while because you're cleaning the carbon out of the intake.
 

85MustGT

Founding Member
Nov 8, 2001
95
0
16
Occupied San Diego
Jun 25, 2004
#10
  • Jun 25, 2004
  • #10
1tirefire said:
let your car warm up and then use a vacuum line to connect a hose from your plenum to the can of seafoam. It'll smoke for a while because you're cleaning the carbon out of the intake.
Click to expand...

Say What, put the hose in the can on one end and the plenum on the other?
 

horseplay01

New Member
Dec 26, 2003
43
0
0
VA
Jul 5, 2004
#11
  • Jul 5, 2004
  • #11
1tirefire said:
let your car warm up and then use a vacuum line to connect a hose from your plenum to the can of seafoam. It'll smoke for a while because you're cleaning the carbon out of the intake.
Click to expand...

That sounds like a great idea. Not sure I fully understand what vacuum line is to be used. Can you exlain a little more in detail? Pics would be nice too.
 
You must log in or register to reply here.

Similar threads

Resolved Holley terminator integration into CCRM
  • BrandonMP
  • Feb 25, 2026
  • SN95 4.6L Mustang Tech
Replies
1
Views
203
SN95 4.6L Mustang Tech Feb 27, 2026
BrandonMP
Door wire harnesses 1996 GT
  • Adizzle843
  • Feb 5, 2026
  • SN95 4.6L Mustang Tech
Replies
7
Views
300
SN95 4.6L Mustang Tech Feb 17, 2026
Adizzle843
M
Help! 2003 GT misfire when hot
  • Modular03
  • Feb 10, 2026
  • SN95 4.6L Mustang Tech
Replies
4
Views
311
SN95 4.6L Mustang Tech Feb 13, 2026
Mustang5L5
S
Fox '87 GT can't get to stay running
  • spilly
  • Mar 29, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 2
Replies
26
Views
567
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Apr 25, 2026
CAMTWO1070
F
Spark Plugs Caused Rough Idle & Driving
  • firevert
  • Sep 1, 2025
  • 2005 - 2009 Specific Tech
Replies
3
Views
354
2005 - 2009 Specific Tech Sep 3, 2025
Noobz347
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?