Surging idle Mustang GT 4.6 - Ford Mustang Forum
 
LinkBack Thread Tools
post #1 of 4 (permalink) Old 03-03-2009 Thread Starter
Rookie
 
eshep007's Avatar
 
Joined: Jan 2008
Location: Raleigh
Posts: 3
 
Angry Surging idle Mustang GT 4.6

Guys, I have a 2000 GT with the 4.6. I recently had a new engine dropped in it but ever since the dang thing won't run idle. It surges up and down, even if I let warm up. I was told that I had to drive it for about 100 miles before the computer would reset and everything would sync up. So far I've driven it for over 300 miles and it still surges. Anyone else run into this problem?
eshep007 is offline  
Sponsored Links
Advertisement
 
post #2 of 4 (permalink) Old 03-03-2009
Apprentice
 
HotRodBAMF's Avatar
 
Joined: Feb 2009
Location: Carolina Beach
Posts: 243
 
Try taking the Neg. Battery cable off for about 30 minutes and then reconnect it. start the car but make sure all power accessories are off (radio, air conditioning, lights, radar detector, ect, ect) and let it idle for about 5 minutes. turn the car off and let it sit for 5 or so minutes again. Then turn it back on and run your radio, ac, and lights for about 5 minutes.
chances are, whoever installed the new engine cranked the car and broke the new cam in at 2000 rpms as mandated, but failed to follow this procedure after he was done.
Your computer needs to "relearn" how to breathe or recalibrate itself after the power source has been disconnected for a while. hard for any computer to do at 2 grand for 20 minutes. try that and see how it works out...
HotRodBAMF is offline  
post #3 of 4 (permalink) Old 03-03-2009
Apprentice
 
HotRodBAMF's Avatar
 
Joined: Feb 2009
Location: Carolina Beach
Posts: 243
 
Try taking the Neg. Battery cable off for about 30 minutes and then reconnect it. start the car but make sure all power accessories are off (radio, air conditioning, lights, radar detector, ect, ect) and let it idle for about 5 minutes. turn the car off and let it sit for 5 or so minutes again. Then turn it back on and run your radio, ac, and lights for about 5 minutes.
chances are, whoever installed the new engine cranked the car and broke the new cam in at 2000 rpms as mandated, but failed to follow this procedure after he was done.
Your computer needs to "relearn" how to breathe or recalibrate itself after the power source has been disconnected for a while. hard for any computer to do at 2 grand for 20 minutes. try that and see how it works out...
HotRodBAMF is offline  
post #4 of 4 (permalink) Old 03-03-2009
Apprentice
 
0046gt's Avatar
 
Joined: Jul 2008
Location: NB
Posts: 110
 
Do you happen to have your A/C or defrost on because if it is low on refriderant then it can keep cycling your compressor and whenever the compressor kicks in it bumps up your idle.
0046gt is offline  
Sponsored Links
Advertisement
 
Closed Thread

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Mustang Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a VALID email address for yourself, otherwise you will not receive the necessary confirmation email needed to confirm, validate and activate your new AFM member account.

Failure to provide a VALID email address, will result in the cancellation of your new AFM member account registration.

Email Address:
OR

Log-in









Random Question

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may 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 Off
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome


1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183