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1989 Mustang GT convertible

  • Thread starter Thread starter Rusty327
  • Start date Start date Sep 20, 2019

Rusty327

New Member
Sep 19, 2019
3
0
1
Ottawa
Sep 20, 2019
#1
  • Sep 20, 2019
  • #1
Thanks for the add
I'm a new owner of a 1989 Mustamg GT convertible
I've owned it for a month
Everything was great till one day a couple of weeks ago
I drove it for about 20 mins stopped somewhere when I started back up it it idle up and down and Check engine light came on
So I googled and found this site with some great things to try
I cleaned the IAC plus order a new one changed it the next day
Ive got it to idle now but after 30 mins of driving roughly it will stall then start right back up...But it will only idle at that point so I have to let it cool down then it gets me home
I've change a bunch of parts and everyone I change one I think I have it
I understand the car is a 1989 and I really don't mind charming the parts I put in it so far because some of them needed to be changed
I changed
Idle air control
Throttle position sensor
Fuel filter
Temp sensor
Maf sensor
Cap and rotor
I ordered oxygen sensors for today
Fuel pressure stay at about 32psi even when it's acting up
It has a EGR valve can I lick it off to eliminate this
These are the check engine light codes I got
11
16
68
79
68
79
Any help appreciated
My buddy says aell it but I Luv it I can't
Thanks
 

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General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
Aug 25, 2016
27,926
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203
polk county florida
Sep 20, 2019
#2
  • Sep 20, 2019
  • #2
There is a checklist for idle/stall issues, start at the top and do it step by step, don't skip around.

Help me create the "Surging Idle Checklist"

Updated 26-Oct-2019 to clarify creeping idle RPM increase as the car is being driven. Many of you are familiar with the "Cranks OK, but No Start Checklist for Fuel Injected Mustangs" checklist and the No Crank Checklist. They are very effective in finding and eliminating the problems by use of...
forums.stangnet.com
 
Reactions: Rusty327
D

DSB88GT

Active Member
Nov 6, 2016
175
37
38
Sep 20, 2019
#3
  • Sep 20, 2019
  • #3
TFI
 

Blown88GT

Founding Member
Nov 13, 1999
2,283
524
164
Palm Beach Gardens, FL
Sep 20, 2019
#4
  • Sep 20, 2019
  • #4
DSB88GT said:
TFI
Click to expand...
Nope, not for surging idle.
 
Reactions: DSB88GT

Potomus Pete

I'm still waiting for the fully nude shots
5 Year Member
Mar 7, 2019
3,308
1,223
153
Sarasota Florida
Sep 20, 2019
#5
  • Sep 20, 2019
  • #5
I can see why you love it. Its a great looking car. Im sure its not a big deal whatever is wrong with it..
 

Olivethefet

I will own your nuts! LOL
5 Year Member
May 17, 2018
2,596
1,790
143
Enterprise AL
Sep 20, 2019
#6
  • Sep 20, 2019
  • #6
DO NOT LICK THE EGR!!! There is no telling what is on that thing! Ewwwww. Besides licking it wont fix anything.
 
Reactions: General karthief and Wayne Waldrep

Wayne Waldrep

Before I post a pic, do you have one of yours?
20+ Year Stangneter
Apr 14, 2003
1,338
659
143
Cuba, AL
Sep 20, 2019
#7
  • Sep 20, 2019
  • #7
I think you should keep it. There needs to be somebody here having grief with their car other than ME!
 
Reactions: Rusty327 and General karthief

General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
Aug 25, 2016
27,926
10,572
203
polk county florida
Sep 20, 2019
#8
  • Sep 20, 2019
  • #8
Olivethefet said:
DO NOT LICK THE EGR!!! There is no telling what is on that thing! Ewwwww. Besides licking it wont fix anything.
Click to expand...
it's hard to get that taste otta yo mouth too!
that's what I heard anyway
 
Reactions: Olivethefet

Rusty327

New Member
Sep 19, 2019
3
0
1
Ottawa
Sep 20, 2019
#9
  • Sep 20, 2019
  • #9
Olivethefet said:
DO NOT LICK THE EGR!!! There is no telling what is on that thing! Ewwwww. Besides licking it wont fix anything.
Click to expand...
Hahaa that’s awesome I won’t lick any more EGR’s.
General karthief said:
There is a checklist for idle/stall issues, start at the top and do it step by step, don't skip around.

Help me create the "Surging Idle Checklist"

Updated 26-Oct-2019 to clarify creeping idle RPM increase as the car is being driven. Many of you are familiar with the "Cranks OK, but No Start Checklist for Fuel Injected Mustangs" checklist and the No Crank Checklist. They are very effective in finding and eliminating the problems by use of...
forums.stangnet.com
Click to expand...
Thanks a lot!!
 

Rusty327

New Member
Sep 19, 2019
3
0
1
Ottawa
Sep 20, 2019
#10
  • Sep 20, 2019
  • #10
Potomus Pete said:
I can see why you love it. Its a great looking car. Im sure its not a big deal whatever is wrong with it..
Click to expand...
Thanks always wanted one
It’s weird It runs great then
All of a sudden it will stalk or almost then it will only idle once it cool runs good again
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,259
17,943
224
Massachusetts
Sep 20, 2019
#11
  • Sep 20, 2019
  • #11
Those codes are not valid to an 89 mustang. You might be off one digit.

Code 68 might really be code 67...in which you need to keep clutch pedal pressed in entire time you are dumping codes.

I won’t guess at the other ones but you should rerun them again? What method did you use?

I highly recommend an innova 3145 meter. $20 at many sources online.
 
Reactions: Rusty327
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