Helllppp. Car has no spark but turns over - 2003-04 Mach 1 Registry Owners Club

97on22s · 08-27-2011, 05:35 PM

We just got the motor hooked up and tried to fire it up. It turns over but won't get any spark. Injectors seem to be getting a pulse. Fuel system is working.

Car sat for 3 years.

We just did full exhaust and crower cams.

Any help or thoughts please

Thanks

Scott McClure · 08-27-2011, 06:54 PM

Did you disconnect the main harness and forget to put it back?

97on22s · 08-27-2011, 07:14 PM

We've traced every harness and wire we can and everything seems to be well connected.

The coils are reading they have voltage

Crank position sensor has voltage

When you turn the key on all the lights light up and they all turn off just like normal.

It's acting like if the pats system is messed up.

I really want to get the car running before taking it to a shop.

machgsxr · 08-27-2011, 11:51 PM

Is it a std car? Did you have the clutch pushed in? If it was converted to auto did you fix the clutch sensor to make it start?

97on22s · 08-28-2011, 09:49 AM

It is a standard but it has the clutch over ride and will start in any gear. One more thing I need to fix.

I think we found the problem. I have 3 harnesses. One of which the last shop cut on. So after further digging it looks like somehow we installed the bad harness. We are going to re install the other harness and see what happens.

97on22s · 08-29-2011, 11:02 AM

Is it possible my engine builder could have installed the crank relucter wheel backwards by accident?

We noticed that on the scanner the car shows 150 rpm when you first turn it over then the rpm show zero while your cranking it.

Any thoughts anyone?

DSG2003Mach1 · 08-29-2011, 11:21 AM

not sure on that part but wanted to clarify that PATs cuts off fuel delivery and should not affect spark

97on22s · 08-29-2011, 12:23 PM

Pats disables ignition and fuel from what I've seen or been told.

I'm going to have ford reflash the computer and nope it fires up. If not we are going to pull the timing cover and check the relucter wheel.

97on22s · 08-30-2011, 07:58 PM

HTML Code:

There was an issue in the harness between my crank sensor and PCM.  Car fired right up.

DSG2003Mach1 · 08-30-2011, 09:20 PM

glad to see ya figured it out!

08-27-2011, 05:35 PM	#1
97on22s Registered User Join Date: Mar 2007 Location: spring tx Posts: 622	Helllppp. Car has no spark but turns over We just got the motor hooked up and tried to fire it up. It turns over but won't get any spark. Injectors seem to be getting a pulse. Fuel system is working. Car sat for 3 years. We just did full exhaust and crower cams. Any help or thoughts please Thanks __________________ 2004 TR Mach 1

08-27-2011, 06:54 PM	#2
Scott McClure Mach1 member Join Date: Aug 2003 Location: East Haven, CT Posts: 3,349	Re: Helllppp. Car has no spark but turns over Did you disconnect the main harness and forget to put it back? __________________ 2011 Mustang GT Grabber Blue Automatic 2003 Mach 1 Whipple 2.3 718 rwhp 735 rwtq @25 psi SOLD

08-27-2011, 07:14 PM	#3
97on22s Registered User Join Date: Mar 2007 Location: spring tx Posts: 622	Re: Helllppp. Car has no spark but turns over We've traced every harness and wire we can and everything seems to be well connected. The coils are reading they have voltage Crank position sensor has voltage When you turn the key on all the lights light up and they all turn off just like normal. It's acting like if the pats system is messed up. I really want to get the car running before taking it to a shop. __________________ 2004 TR Mach 1

08-27-2011, 11:51 PM	#4
machgsxr Registered User Join Date: Feb 2005 Location: San Antonio Posts: 6,414	Re: Helllppp. Car has no spark but turns over Is it a std car? Did you have the clutch pushed in? If it was converted to auto did you fix the clutch sensor to make it start?

08-28-2011, 09:49 AM	#5
97on22s Registered User Join Date: Mar 2007 Location: spring tx Posts: 622	Re: Helllppp. Car has no spark but turns over It is a standard but it has the clutch over ride and will start in any gear. One more thing I need to fix. I think we found the problem. I have 3 harnesses. One of which the last shop cut on. So after further digging it looks like somehow we installed the bad harness. We are going to re install the other harness and see what happens. __________________ 2004 TR Mach 1

08-29-2011, 11:02 AM	#6
97on22s Registered User Join Date: Mar 2007 Location: spring tx Posts: 622	Re: Helllppp. Car has no spark but turns over Is it possible my engine builder could have installed the crank relucter wheel backwards by accident? We noticed that on the scanner the car shows 150 rpm when you first turn it over then the rpm show zero while your cranking it. Any thoughts anyone? __________________ 2004 TR Mach 1

08-29-2011, 11:21 AM	#7
DSG2003Mach1 700 HP Mach Join Date: Nov 2003 Location: Orlando, FL Posts: 8,384	Re: Helllppp. Car has no spark but turns over not sure on that part but wanted to clarify that PATs cuts off fuel delivery and should not affect spark __________________ 03 dsg mach1 - MPR built 9.5:1 motor, D1, cams, ported intake, full exhaust, magnum t56, built rear, E85 etc... '12 F150 FX2 Supercrew with Ecoboost daily beater

08-29-2011, 12:23 PM	#8
97on22s Registered User Join Date: Mar 2007 Location: spring tx Posts: 622	Re: Helllppp. Car has no spark but turns over Pats disables ignition and fuel from what I've seen or been told. I'm going to have ford reflash the computer and nope it fires up. If not we are going to pull the timing cover and check the relucter wheel. __________________ 2004 TR Mach 1

08-30-2011, 07:58 PM	#9
97on22s Registered User Join Date: Mar 2007 Location: spring tx Posts: 622	Re: Helllppp. Car has no spark but turns over HTML Code: There was an issue in the harness between my crank sensor and PCM. Car fired right up. __________________ 2004 TR Mach 1

08-30-2011, 09:20 PM	#10
DSG2003Mach1 700 HP Mach Join Date: Nov 2003 Location: Orlando, FL Posts: 8,384	Re: Helllppp. Car has no spark but turns over glad to see ya figured it out! __________________ 03 dsg mach1 - MPR built 9.5:1 motor, D1, cams, ported intake, full exhaust, magnum t56, built rear, E85 etc... '12 F150 FX2 Supercrew with Ecoboost daily beater

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