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07-20-2012, 01:05 PM
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#1 | | Registered User
Join Date: Jul 2011
Posts: 568
| help!!
My car rpm started dancing while I was going 70 no knocks or anything, pulled over now wont start, it'll crank but but wont turn over, kinda Sounds Like it aint getting fuel it'll kinda start to turn over but wont...what you think?? Idk It might be maf. Had it in N soon as i stopped car died
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1995 5.0 u/d,cai,t/b,shorty headers,x pipe,flows 40's,373 gears, alum. driveshaft, alum. radiator, shift kit, black 0304 cobras, smoaked cobra headlights.
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07-20-2012, 01:18 PM
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#2 | | Registered User
Join Date: Mar 2011
Posts: 1,701
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Check for air leaks
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07-20-2012, 01:28 PM
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#3 | | Registered User
Join Date: Jul 2011
Posts: 568
| Quote: |
Originally Posted by kickerofdoom Check for air leaks | I looked and checked all lines, they are all connected and seem ok
---------- Post added at 02:28 PM ---------- Previous post was at 02:25 PM ----------
Quote: |
Originally Posted by mystang50
I looked and checked all lines, they are all connected and seem ok
| No leaks under car, or fluids under the hood fuel pump primes and everything
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1995 5.0 u/d,cai,t/b,shorty headers,x pipe,flows 40's,373 gears, alum. driveshaft, alum. radiator, shift kit, black 0304 cobras, smoaked cobra headlights.
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07-20-2012, 02:15 PM
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#4 | | Senior Member
Join Date: Jun 2006
Posts: 8,786
| Re: help!!
Check your fuel pressure, sounds like the pump or regulator failed.If that is not it, test the coil, ignition module and PIP.
Test procedures can be found in the Useful Info thread.
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07-20-2012, 02:23 PM
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#5 | | Registered User
Join Date: Jul 2011
Posts: 568
| Quote: |
Originally Posted by Trojan Horse Check your fuel pressure, sounds like the pump or regulator failed.If that is not it, test the coil, ignition module and PIP.
Test procedures can be found in the Useful Info thread. | Yeah I think Its fuel related too, fuel pump primes ,but I cant check anything now still stuck on side of the road...but what about my rpm's dancing while I was driving ? Thats Whats kinda got me stumped
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1995 5.0 u/d,cai,t/b,shorty headers,x pipe,flows 40's,373 gears, alum. driveshaft, alum. radiator, shift kit, black 0304 cobras, smoaked cobra headlights.
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07-20-2012, 02:25 PM
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#6 | | Senior Member
Join Date: Jun 2006
Posts: 8,786
| Re: help!!
Quote:
Originally Posted by mystang50  Yeah I think Its fuel related too, fuel pump primes ,but I cant check anything now still stuck on side of the road...but what about my rpm's dancing while I was driving ? Thats Whats kinda got me stumped | That could have been from the engine misfiring.
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07-20-2012, 02:33 PM
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#7 | | Registered User
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Posts: 568
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Because of the fuel?? No knocks or pings or detonation
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1995 5.0 u/d,cai,t/b,shorty headers,x pipe,flows 40's,373 gears, alum. driveshaft, alum. radiator, shift kit, black 0304 cobras, smoaked cobra headlights.
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07-20-2012, 02:44 PM
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#8 | | Senior Member
Join Date: Jun 2006
Posts: 8,786
| Re: help!!
Quote:
Originally Posted by mystang50 Because of the fuel?? No knocks or pings or detonation | Yes, low pressure or no fuel will leave the cylinders unable to fire, so that will affect the RPMs.
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07-20-2012, 02:48 PM
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#9 | | Registered User
Join Date: Jul 2011
Posts: 568
| Quote: |
Originally Posted by Trojan Horse
Yes, low pressure or no fuel will leave the cylinders unable to fire, so that will affect the RPMs.
| Hmmm Sounds Like it might be the prob...is it possible that it could be my alternator?
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1995 5.0 u/d,cai,t/b,shorty headers,x pipe,flows 40's,373 gears, alum. driveshaft, alum. radiator, shift kit, black 0304 cobras, smoaked cobra headlights.
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07-20-2012, 02:53 PM
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#10 | | Senior Member
Join Date: Jun 2006
Posts: 8,786
| Re: help!!
Quote:
Originally Posted by mystang50 Hmmm Sounds Like it might be the prob...is it possible that it could be my alternator? | I'd think the battery would be dead if that were the case. 
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07-20-2012, 03:03 PM
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#11 | | Forum Car Trader
Join Date: Apr 2012
Posts: 1,154
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Check your grounds
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07-20-2012, 03:06 PM
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#12 | | Senior Member
Join Date: Jun 2006
Posts: 8,786
| Re: help!!
Quote:
Originally Posted by 90GTNovi2000 Check your grounds | Definitely!
I've seen inadequate grounding cause a host of issues. 
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07-20-2012, 04:10 PM
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#13 | | Registered User
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| Quote: |
Originally Posted by Trojan Horse
Definitely!
I've seen inadequate grounding cause a host of issues. | Fun partq
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1995 5.0 u/d,cai,t/b,shorty headers,x pipe,flows 40's,373 gears, alum. driveshaft, alum. radiator, shift kit, black 0304 cobras, smoaked cobra headlights.
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07-21-2012, 11:33 PM
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#14 | | Registered User
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Posts: 568
| Quote: |
Originally Posted by mystang50
Fun partq
| I don't think Its a ground cuz it will start barly and idle at Like 200 to 400. Could it be a bad injtr/s??
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1995 5.0 u/d,cai,t/b,shorty headers,x pipe,flows 40's,373 gears, alum. driveshaft, alum. radiator, shift kit, black 0304 cobras, smoaked cobra headlights.
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07-22-2012, 02:37 AM
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#15 | | Moderator Emeritus
Join Date: Aug 2011
Posts: 4,803
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Bad grounds can cause more issues than you could possibly imagine. The ground, relates or ties to all the other systems you are looking at. It's one of the basic fundamental things that has to be right and is a cheap and easy place to start troubleshooting...
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07-22-2012, 07:09 AM
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#16 | | Senior Member
Join Date: Jun 2006
Posts: 8,786
| Re: help!!
Quote:
Originally Posted by mystang50 I don't think Its a ground cuz it will start barly and idle at Like 200 to 400. Could it be a bad injtr/s?? | Injectors are a possibility. Have you checked the fuel pressure?
More than likely you have a plugged filter, bad regulator or pump.
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07-24-2012, 12:09 PM
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#17 | | Registered User
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Posts: 568
| Quote: |
Originally Posted by Trojan Horse
Injectors are a possibility. Have you checked the fuel pressure?
More than likely you have a plugged filter, bad regulator or pump.
| Can you check the fuel pressure with it not running??
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1995 5.0 u/d,cai,t/b,shorty headers,x pipe,flows 40's,373 gears, alum. driveshaft, alum. radiator, shift kit, black 0304 cobras, smoaked cobra headlights.
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07-24-2012, 12:36 PM
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#18 | | Senior Member
Join Date: Jun 2006
Posts: 8,786
| Re: help!!
Quote:
Originally Posted by mystang50 Can you check the fuel pressure with it not running?? | Yes, but it may not be 100% accurate.
You should be able to tell if it is pumping though.
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07-24-2012, 12:39 PM
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#19 | | Registered User
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Posts: 568
| Quote: |
Originally Posted by Trojan Horse
Yes, but it may not be 100% accurate.
You should be able to tell if it is pumping though. | Check it off the fuel rail correct?? What should it be at?
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1995 5.0 u/d,cai,t/b,shorty headers,x pipe,flows 40's,373 gears, alum. driveshaft, alum. radiator, shift kit, black 0304 cobras, smoaked cobra headlights.
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07-24-2012, 12:53 PM
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#20 | | Senior Member
Join Date: Jun 2006
Posts: 8,786
| Re: help!!
Quote:
Originally Posted by mystang50 Check it off the fuel rail correct?? What should it be at? | Yes, at the Schrader valve. You will probably need an adapter to do so.
I would "hazard a guess" that with no vacuum it should be around the 38-40 psi range specified for the 5.0, but it may go higher without the engine running.
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07-24-2012, 01:00 PM
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#21 | | Registered User
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Posts: 568
| Quote: |
Originally Posted by Trojan Horse
Yes, at the Schrader valve. You will probably need an adapter to do so.
I would "hazard a guess" that with no vacuum it should be around the 38-40 psi range specified for the 5.0, but it may go higher without the engine running.
| I'll do that this weekend! What about grounds?? Is there a diagram I can look at to trace them out??
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1995 5.0 u/d,cai,t/b,shorty headers,x pipe,flows 40's,373 gears, alum. driveshaft, alum. radiator, shift kit, black 0304 cobras, smoaked cobra headlights.
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07-24-2012, 01:03 PM
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#22 | | Senior Member
Join Date: Jun 2006
Posts: 8,786
| Re: help!!
Quote:
Originally Posted by mystang50 I'll do that this weekend! What about grounds?? Is there a diagram I can look at to trace them out?? | If you have a Chiltons with the wiring diagrams you should be able to.
Otherwise insure that your battery to engine and frame are good and the ground at the ECU is good.
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07-24-2012, 01:09 PM
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#23 | | Registered User
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Posts: 568
| Quote: |
Originally Posted by Trojan Horse
If you have a Chiltons with the wiring diagrams you should be able to.
Otherwise insure that your battery to engine and frame are good and the ground at the ECU is good.
| I dont have a manual, anyone have a diagram on hand??
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1995 5.0 u/d,cai,t/b,shorty headers,x pipe,flows 40's,373 gears, alum. driveshaft, alum. radiator, shift kit, black 0304 cobras, smoaked cobra headlights.
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07-24-2012, 01:25 PM
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#24 | | Senior Member
Join Date: Jun 2006
Posts: 8,786
| Re: help!!
Quote:
Originally Posted by mystang50 I dont have a manual, anyone have a diagram on hand?? | Check the "Very Useful" & "Old Fuel Injection" links in the Useful Info thread.
P.S. A manual should be your very next purchase. It would help you immensely in diagnosing your problem I bet.
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08-05-2012, 01:51 AM
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#25 | | Registered User
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Posts: 568
| http://www.youtube.com/watch?v=neUks...&feature=g-upl
It starts up and runs fine for a couple seconds, then does this ****!!
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1995 5.0 u/d,cai,t/b,shorty headers,x pipe,flows 40's,373 gears, alum. driveshaft, alum. radiator, shift kit, black 0304 cobras, smoaked cobra headlights.
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08-05-2012, 02:39 AM
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#26 | | Senior Member
Join Date: Jun 2006
Posts: 8,786
| Re: help!!
Quote:
Originally Posted by mystang50 |  Wow, I never heard a car say f*** you before. I don't have a clue as to what would make it do that.  
It sounds like it is either flooding or running out of fuel.
I'd have to lean toward running out of fuel as I didn't see any black smoke.
List everything you have tried and the results so far.
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08-14-2012, 08:53 PM
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#27 | | Registered User
Join Date: Feb 2010
Posts: 71
| Re: help!!
look i have a 95 5.0 that did the same thing not sure what your problem is but check these things im sure one of them is your problem which one i don't know: oxygen sensors, profile ignition pickup(pip) in the dizzy, ignition coil or maf let me know which one was the problem
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08-15-2012, 12:48 AM
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#28 | | Registered User
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Posts: 568
| Quote: |
Originally Posted by durtyred69 look i have a 95 5.0 that did the same thing not sure what your problem is but check these things im sure one of them is your problem which one i don't know: oxygen sensors, profile ignition pickup(pip) in the dizzy, ignition coil or maf let me know which one was the problem | Changed fuel pump, and I had a hole in my distributer...so changed that out...now its ok
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1995 5.0 u/d,cai,t/b,shorty headers,x pipe,flows 40's,373 gears, alum. driveshaft, alum. radiator, shift kit, black 0304 cobras, smoaked cobra headlights.
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