crank but no start, fuel-spark but no start. September 30, 2009, 12:37:45 AM i have spent the last 3 hours on this site reading everyone engine problems that sound like mine until there car starts and realized you guys really really know your shiznit, so i ask for your helpi have an 87 cougar with an H.O swap from an 89 mustang. car ran great. replaced the heater core. Car ran great turned it off checking for the usual battery drain , car never started the same after that.Problem- car starts chokes and dies immediately, when I do catch it on the odd chance of starting the only way to keep it running is when I pump the gas pedal. The only off part is when I press the gas it chokes and dies, when I release the pedal quick enough the engine keeps running until it dies again. Fuel pump if running and priming, spark is there at the plugs, It’s like the gas pedal is doing the opposite of what it is suppose to do and I’m lost Thanks for your time and hope someone can help without throwing a lot of cash at useless parts----Also converted to Mas Air Quote Selected
crank but no start, fuel-spark but no start. Reply #1 – September 30, 2009, 02:44:03 AM I'm no expert, but if I recall that is what my '85 and the '87 we have did when the MAP sensors went out. Sounds familiar, just can't recall what exactly the cars were doing to say for sure. Someone will chime in with more help, welcome and stick around. Lots of great stuff in here. Quote Selected
crank but no start, fuel-spark but no start. Reply #2 – September 30, 2009, 03:03:19 AM I would first run codes, then second I would check the vaspooge lines. Alot of the cars with the electric options run alot of small plastic hoses that break everywhere.If the hose is off your MAP sensor, it will get really bad mileage and leave black soot everywhere. Quote Selected
crank but no start, fuel-spark but no start. Reply #3 – October 10, 2009, 05:48:00 PM got a code reader today and it shot out DTC;95 Fuel Pump Secondary Circut?anyone have a clue what that means?did some lookin up on another page and found this95 - Fuel pump secondary circuit failure - PCM to ground,,, so that means i should ???? Quote Selected
crank but no start, fuel-spark but no start. Reply #4 – October 11, 2009, 02:00:55 AM does the fuel pump run constanly when you turn the key forward?code reader = paper clip , just fyiI find it really odd you have only one code,, almost seems impossible with the condition you have. I dont think your checking codes correctly.95 (O) Fuel pump: open, bad ground or always on - Power / Fuel Pump Circuits (R) AIR not Diverting (AIRD) - Air Injection Quote Selected
crank but no start, fuel-spark but no start. Reply #5 – October 11, 2009, 10:16:22 AM Assuming you are using the '89 Stang MAF computer, code 95 likely means the fuel pump monitor circuit was never wired... No big deal, won't cause a problem other than the code...If you are running the MAF 'puter, there should be no vacuum connection to the MAP... In a MAF setup, it functions a a baro sensor... Quote Selected
crank but no start, fuel-spark but no start. Reply #6 – October 11, 2009, 05:11:55 PM Just as a thought, how's the fuel pressure regulator? Quote Selected
crank but no start, fuel-spark but no start. Reply #7 – October 11, 2009, 09:40:55 PM i was going to check that tomorrow along with the psi at crank, because i have prime in on position, i have a spare regulator from the original 5L fuel rail, do you think it will work or is it set to a different psi?i didnt wired the fuel pump monitor circuit when i droped the engine in, i was young and dieing to hear the sound of the engine.... Quote Selected
crank but no start, fuel-spark but no start. Reply #8 – October 15, 2009, 04:30:47 PM alright so i got a fuel gauge today and a new fuel filter.the psi in the rail was sitting at 5-10 psi at prime and crank i know thats way to low and it also siphons back in between on and run, so my question is , if it is the fuel regulator, would it be stuck open not alowing it to build some kinda pressure?? or am i heading to ford for a new mustang fuel pump since the one i but in last year from a jobber seams to not give me the pressure i want. or keep feeding it money with a new fuel pump relay and then regulator with a finally of a pump ? Quote Selected
crank but no start, fuel-spark but no start. Reply #9 – October 15, 2009, 05:15:15 PM I would just jump straight to the regulator. If you have 5-10PSI, then the relay is working and something fuel related is not. On my first car, an 86cougar, the regulator made a ton of difference. It drove better and accelerated better after. After that, I would be looking into the pump. Quote Selected
crank but no start, fuel-spark but no start. Reply #10 – October 16, 2009, 01:51:40 AM pumpnow look at the 3.8L super charged fuel pumps. A lot cheaper and deliver 90lph. Much better than your stock bosch 60lph pump.If it were the reg, you would have high presure at the rail.This is only based on odds, meaning i would bet your reg is not "stuck" mostly shut and the pump is good but visa versa. Quote Selected
crank but no start, fuel-spark but no start. Reply #11 – October 16, 2009, 09:04:54 AM If you reused the original, you may have a busted coupling hose from the pump to the tank output... Seems to be a common problem, as the ones supplied for the Stang pumps won't fit the Bird pump hanger... If that's the prob, just get about a foot of gas line hose and install it in a loop so it doesn't kink...If you want to verify whether the prob is in the tank or the regulator, connect the gauge to the output of the fuel filter... Cycle the ign sw a couple time, should see 100+ psi... Quote Selected
crank but no start, fuel-spark but no start. Reply #12 – November 10, 2009, 01:08:52 PM Problem solved !!!! burning rubber and loud exhaust once again it turned out to be the 4" long hose inside the gas tank from the pump to the sending unitthank you all very much!! you guys know your shiznit Quote Selected
crank but no start, fuel-spark but no start. Reply #13 – November 11, 2009, 05:21:05 AM edit Quote Selected
crank but no start, fuel-spark but no start. Reply #14 – November 16, 2009, 02:36:22 PM yep problem solved, 4" hose from pump to internal sending unit Quote Selected
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