94 gt starting issues - Ford Mustang Forum
Reply
 
LinkBack Thread Tools
post #1 of 30 (permalink) Old 01-04-2013 Thread Starter
Rookie
 
Harned67's Avatar
 
Joined: Jan 2013
Location: Festus
Posts: 27
 
94 gt starting issues

I have a 94 gt that is pretty much stock, only thing it has is a b303 can and matching springs as well as exhaust. This car doesn't like to start but when I can get it to start it runs strong! It cranks extremely fast, shows no codes except an egr code (egr was deleted and blocked off), I have fuel and spark... I'm not sure why but it does not like to start, just cranks really fast... When it does start I can drive it with no drive ability issues at all but when I turn it off it doesn't want to start back up. It's worse cold than after I drive it. If I do drive it and turn it off once it has reached operating temp 8 out of 10 times it'll fire right back up but if it cools down then it is a pain in the a** to get it running again... Idk what to do. It's almost as if the pip is sending the signal at the wrong time till it starts... Once it starts it runs great! Makes no sense! Thanks for your help! I need this car ASAP to get to work
Harned67 is offline  
Sponsored Links
Advertisement
 
post #2 of 30 (permalink) Old 01-05-2013
GT Member
 
toyman's Avatar
 
Joined: Sep 2007
Location: Vernon
Posts: 2,373
 
I would confirm the fuel pressure (KOEO) with a gauge.

Richard
KB 2.1L, FRPP M5400-A Suspension System, FRPP Aluminum D/S, Shift Kit, Built TC, FRPP 3.73 Gears, Balanced Roller Cammed Engine, Edelbrock Performer Heads, Comp 270AH cam, AEM EMS, 3.5 Bar MAP, Zeitronix ZT-2 WB, FRPP 70mm TB, hardened AODE, modified UPR CAI, Be Cool Aluminum Rad
toyman is offline  
post #3 of 30 (permalink) Old 01-06-2013
Rookie
5.0L Member
 
superman79's Avatar
 
Joined: May 2012
Location: sawmills
Posts: 41
 
i would try changing the thermostate senser which tells your pcm what your engine temperature is so it knows hot to ajust the timming and fuel. its on the lower intake manifoil right behing your distributor doesnt cost but 5bucks. goodluck!

94 mustang gt matt black
GT40p heads
comp cam
msd ignition
cold air intake
and much more:kooky:{mine}
03mustang gt
(stock) {brothers}
superman79 is offline  
post #4 of 30 (permalink) Old 01-06-2013
GT Member
 
toyman's Avatar
 
Joined: Sep 2007
Location: Vernon
Posts: 2,373
 
Quote:
Originally Posted by superman79 View Post
i would try changing the thermostate senser which tells your pcm what your engine temperature is so it knows hot to ajust the timming and fuel. its on the lower intake manifoil right behing your distributor doesnt cost but 5bucks. goodluck!
WRONG. That's the dash gauge sending unit. The ECT sensor is in the housing above the T-stat by the heater bypass.

Richard
KB 2.1L, FRPP M5400-A Suspension System, FRPP Aluminum D/S, Shift Kit, Built TC, FRPP 3.73 Gears, Balanced Roller Cammed Engine, Edelbrock Performer Heads, Comp 270AH cam, AEM EMS, 3.5 Bar MAP, Zeitronix ZT-2 WB, FRPP 70mm TB, hardened AODE, modified UPR CAI, Be Cool Aluminum Rad
toyman is offline  
post #5 of 30 (permalink) Old 01-07-2013 Thread Starter
Rookie
 
Harned67's Avatar
 
Joined: Jan 2013
Location: Festus
Posts: 27
 
I appreciate the replies! If you are talking about the coolant temp sensor on the heater rails then I put a new one on there a couple months ago due to none accurate reading on the temp gauge inside the car. It was always trying to tell me the engine was hot with it not even running for a couple minutes. I would turn it off and make sure it didn't overheat but the hoses weren't even warm and the radiator was cool as well. So I replaced it. It doesn't do that anymore... Now this morning I tried to start the car, it was 22 degrees out, and spent 20 min trying to do so. I didn't crank it for the full 20 min but I did let the fuel system prime about 5 times before I even tried to start the car. It cranked but never even tried to start. I would crank for 3 sec and let off for one... Nothing. Sprayed starter fluid in the throttle body and reattached the cold air intake. It didn't react to that either. Which made it seem like a spark issue... It has new distributor (reman), plugs, wires, cap and rotor, and coil. So idk. I had to drive my 67 cougar to work instead of the Stang today. Killed the wallet... But when I got home it was 45 degrees and I primed it twice. Car started right up... Sorry this is so long. Trying to be thorough. Thank you guys!
Harned67 is offline  
post #6 of 30 (permalink) Old 01-07-2013 Thread Starter
Rookie
 
Harned67's Avatar
 
Joined: Jan 2013
Location: Festus
Posts: 27
 
And also the fuel pressure was a constant 38 koeo...
Harned67 is offline  
post #7 of 30 (permalink) Old 01-07-2013 Thread Starter
Rookie
 
Harned67's Avatar
 
Joined: Jan 2013
Location: Festus
Posts: 27
 
I guess my only other thought would be... I guess it could be the pip again since it is intermittent and the distributor is a reman... I know heat affects those but would cold do it as well?
Harned67 is offline  
post #8 of 30 (permalink) Old 01-12-2013
Rookie
 
5.0 saddle club's Avatar
 
Joined: Jun 2012
Location: dalton
Posts: 43
 
Can you check the fuel pressure after the regulator? It sounds like the pressure bleeds off after it sets a while. Mine was hard to start in the mornings and a friend said the regulator was on its way out. You may be getting 38 before the regulator but not enough after it. If that doesn't help check the plugs they may have fouled from turning over without starting. If none of that helps take that dizzy back I've got bad remans before.
5.0 saddle club is offline  
post #9 of 30 (permalink) Old 01-12-2013
Rookie
 
5.0 saddle club's Avatar
 
Joined: Jun 2012
Location: dalton
Posts: 43
 
Also test the coil with a multimeter, its the only definite way to test it. You should be able to find a walk through online no problem.
5.0 saddle club is offline  
post #10 of 30 (permalink) Old 01-16-2013 Thread Starter
Rookie
 
Harned67's Avatar
 
Joined: Jan 2013
Location: Festus
Posts: 27
 
I will definitely try that. Thanks for everything guys!! :smoke: ill report back to you once I can check everything
Harned67 is offline  
Made Member
 
ratio411's Avatar
 
Joined: Nov 2012
Location: Pensacola
Posts: 519
 
Quote:
Originally Posted by Harned67 View Post
If you are talking about the coolant temp sensor on the heater rails then I put a new one on there a couple months ago due to none accurate reading on the temp gauge inside the car. It was always trying to tell me the engine was hot with it not even running for a couple minutes. I would turn it off and make sure it didn't overheat but the hoses weren't even warm and the radiator was cool as well. So I replaced it. It doesn't do that anymore...
Are you saying you replaced the ECT or gauge sensor?
You lost me there.

The ECT is in the heater rails, and it has nothing to do at all with your gauge. The one on the driver's side intake water passage is the gauge sender, and it has nothing to do with the ECT previous posters suggest checking.

1987 Mustang GT [Mine]
1981 Fairmont Futura [Son #1]
1994 Mustang GT [Son #2]
I am the mechanic on all of 'em...
ratio411 is offline  
post #12 of 30 (permalink) Old 01-16-2013 Thread Starter
Rookie
 
Harned67's Avatar
 
Joined: Jan 2013
Location: Festus
Posts: 27
 
Ok, i am sorry. I replaced the ect. Thank you for the clarification. Now that you mention it I replaced that and then shortly after I ended up putting extra grounds on it and made the existing ones better. That is what probably fixed the gauge... But I do have a thought.... The oil pressure sensor on the car is not hooked up because I put a regular brand new fox body oil pan I had in the car and it did not have the sensor on it. I failed to think of this as I built this engine... Now could that possibly keep it from starting when it's cold because it is reading no pressure and the oil is not moving as free. Would explain why when it is warm it would start but not cold. And also that it will start after it has warmed up... Just a thought. Let me know if this can affect starting. Thanks again everyone!
Harned67 is offline  
GT Member
 
toyman's Avatar
 
Joined: Sep 2007
Location: Vernon
Posts: 2,373
 
Cold start issues are unrelated as the PCM does not monitor oil pressure.

Richard
KB 2.1L, FRPP M5400-A Suspension System, FRPP Aluminum D/S, Shift Kit, Built TC, FRPP 3.73 Gears, Balanced Roller Cammed Engine, Edelbrock Performer Heads, Comp 270AH cam, AEM EMS, 3.5 Bar MAP, Zeitronix ZT-2 WB, FRPP 70mm TB, hardened AODE, modified UPR CAI, Be Cool Aluminum Rad
toyman is offline  
GT Member
 
toyman's Avatar
 
Joined: Sep 2007
Location: Vernon
Posts: 2,373
 
Quote:
Originally Posted by 5.0 saddle club View Post
Can you check the fuel pressure after the regulator? It sounds like the pressure bleeds off after it sets a while. Mine was hard to start in the mornings and a friend said the regulator was on its way out. You may be getting 38 before the regulator but not enough after it. If that doesn't help check the plugs they may have fouled from turning over without starting. If none of that helps take that dizzy back I've got bad remans before.
There isn't really an after side of the regulator that means anything. The stock regulator maintains a set pressure in the fuel rails to the injectors by bleeding off excess fuel back to the tank. The line pressure from the pump will be about 90 psi. When the ignition is turned off, the rails should remain pressurized for some time. This is to facilitate a faster restart.

Richard
KB 2.1L, FRPP M5400-A Suspension System, FRPP Aluminum D/S, Shift Kit, Built TC, FRPP 3.73 Gears, Balanced Roller Cammed Engine, Edelbrock Performer Heads, Comp 270AH cam, AEM EMS, 3.5 Bar MAP, Zeitronix ZT-2 WB, FRPP 70mm TB, hardened AODE, modified UPR CAI, Be Cool Aluminum Rad
toyman is offline  
post #15 of 30 (permalink) Old 01-17-2013 Thread Starter
Rookie
 
Harned67's Avatar
 
Joined: Jan 2013
Location: Festus
Posts: 27
 
Ok. My next question would be aside from fuel and spark. What could keep the car from starting but once started it doesn't affect anything or throw codes? Because once it starts it runs strong and gives no problems at all. It's just the initial start up that I can't hardly do.
Harned67 is offline  
Sponsored Links
Advertisement
 
Reply

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









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



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 Off
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