![SEARCH](http://www.mustangworks.com/images/search.png)
![The Mustang Works](http://www.mustangworks.com/images/mw_footer_logo.gif)
© Copyright 1995 thru 2008 - The Mustang Works™. All Rights Reserved.
MustangWorks.com is designed and hosted by Aero3 Media.
MustangWorks.com is designed and hosted by Aero3 Media.
![]() |
#1 |
Registered Member
Join Date: Nov 2004
Posts: 1
|
![]() basically, the car begins to hesitate when i gas it. it idles PERFECTLY though. it will hesitate even at WOT. not always though sometimes it runs perfect too. i cleaned out the salt and pepper plugs, the spark plugs are new, changed them twice actually, spark plug wires are perfect (new), new cap (3 different ones), new rotor (2 different ones). Put a new TFI, same thing. no vacuum leaks. if it were a sensor, what sensors work during WOT? or maybe coil? maybe pick up in distributor? how do I check those? cleaned MAF, o2 sensors are new, ran fuel pressure gauge, fuel pressure stays perfect during hesitation.
__________________
1993 Mustang GT - 3150lbs - Twisted Wedge Heads; Track Heat intake; E303; 1.72rr; 190lph fuel pump; 24# inj.; AFPR (42psi); K&N; March Ram Air; Pullies; 76mm MAF; 70mm TB; 1 5/8in Long Tubes; 2.5in OffRoad HPipe; Flowmaster 2.5in Cat-Back; CutOuts; 18* timing; 3.73's; Spec Stage II; Aluminum DS; Electric Fan; Aluminum Radiator; Pro 5.0; short belt; Sub. connectors; Upper & Lower Control Arms; 3G 160amp Alt; Torque XS starter; TFS valve covers |
![]() |
![]() |
![]() |
#2 |
Registered Member
Join Date: Sep 2002
Posts: 158
|
![]() I don't know what code 42 is, but my car had the exact same symptoms as yours. It ended up being my battery cable! It had a small crack in it where it started to oxidize. It was the one that ran from the terminal to all that electrical stuff attached to the fender wall. I swapped it out with a larger gauge while I was at it. Problem gone. It will be worse if you have an MSD box - they're very voltage sensitive. Don't expect to see your voltage needle flicker if this is the problem. By it's nature, this problem was very intermittent, and varying in degree. At least it's an easy fix. I'm also running the 3G.
__________________
91 Coupe: FMS 1 5/8 unqual shorty's, BBK off road X-pipe, Super Duty T5, Pro 5.0 short shifter, 2.73 rear, G3 alt, MSD coil, dist, no smog pump, oil cooler, 195K miles, 14 deg timing, 23 mpg city/29 mpg highway @ 65 mph. |
![]() |
![]() |
![]() |
#3 |
Registered Member
Join Date: Aug 2002
Location: SanAntonio, Tx
Posts: 957
|
![]() Dang, your car is a gt but weighs as much as my coupe?
hey man, how does it run in the higher rpms? if it pulls hard after the hesitation, then we can rule out the coil, although i seen my friends 93 gt get two bad coils in a row, and it caused "spark scatter" and we couldnt figure it out? we replaced the tfi, cap, and all you listed above, also his msd coil wouldnt work right, it ran better with a stock coil......hope someone can help you more than this.
__________________
X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear |
![]() |
![]() |
![]() |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
Code 81?? Code 51. HELP!! | blk88lx | Windsor Power | 0 | 03-31-2004 08:22 PM |
computer code 15 and Superchip | tomazzzo | Windsor Power | 1 | 02-27-2004 04:46 AM |
code 15 | tomazzzo | Windsor Power | 1 | 06-06-2003 11:15 PM |
Code 85...see if anyone can interpret | silver_pilate | Windsor Power | 1 | 12-31-2001 06:24 PM |
Code 81???? | Chevyguy | Windsor Power | 0 | 04-27-2001 10:44 AM |