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NEED HELP PLEASE111

 
perm27
New User
Posts: 2
Joined: 01/13
Posted: 01/02/13 08:31 PM

I have a 90 lx 5.0 only had car about 2 weeks.motor only has about 8500mi and has a small cam and other mods and runs awesome until i shut it off today after runin around all day went to take back off after sitin for about an hour and all car will do is crank.can hear fuel pump and coil wire is good????thxs  

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waynep71222
User
Posts: 166
Joined: 04/12
Posted: 01/03/13 08:12 AM

wow... so many things... it could be....

lets start at the basics...

you can hear the fuel pump.... got gas in the tank???    is the fuel filter clogged..  fuel pressure at the fuel rail.. tested with a fuel pressure gauge with the ford adaptor.. does the pressure come up almost instantly or does it take a while...  just because the fuel pump works does not mean it is putting out enough fuel pressure to allow the system to work properly..

this is an actron CP7818 ..  the small adaptor is for the ford schrader  valve.

next... spark...   from the coil....    then got spark at the spark plug wire ends??? the rotor could have gone bad and burned thru..  its happened before..  does the rotor turn when you crank the engine.???   when you bring the timing mark on the balance to TDC.. does the rotor point at the #1 spark plug wire or 180 out.. which would be OK also as the crank turns twice to one of the distributer...



has anything been eating your wiring harness...   squirrels.. rats... mice??  did the bottom of the ignition switch fall off??? that has happened a bunch of times..


next test requires some out of the specialized tools.. other than the fuel injection pressure tester..  either a NOID light..  disconnect one of the fuel injector connectors.. plug in the noid light .. crank the engine.. does the noid light flash???   noid lights can be borrowed from many parts stores in their loan a tool section...


so.,.  spark ..  fuel pressure....  injector pulse..???

if you have one of the EEC4 code readers you might run a KOEO test... see if any codes come up...  there are pages of no start diagnostics in the service manuals and online...

post what you find...  

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perm27
New User
Posts: 2
Joined: 01/13
Posted: 01/03/13 09:03 AM

thks for your knowledge!!!fixin to do some checking,just got the car back from having the heater core replaced thinking the ignition switch could be a really good contender being that the dash has been recently out of the car and like i said everything under the hood is new!???and yes i had just filled the car up with 92 octane about 20 miles before this happen  

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waynep71222
User
Posts: 166
Joined: 04/12
Posted: 01/03/13 08:35 PM

i can save you a LOT of time  if you want to change your ignition switch..

remove the filler panel under the column..

remove the screws from the column shroud... there are 4 or 5 of them...

remove the column shroud..   you can usually work it around and past the tilt decoration ring.

with a 5/16 blade screwdriver long shank.. and a small hammer or something to pound on the screw driver head...     tap a dent in the side of the tamper proof screw heads... then change the angle of the screw driver.. so you can loosen them with the same screw driver and impacting device..  tapping them on the side of the head closest to you downward...

you can then use a pair of needle nose pliers to finish unscrewing the 2 tamperproof screws..

the switch is now easily removed..    the screws actually have some locktite to make them hard to get out..  you can reuse the same screws to go back in.. or you can use the new ones.. but they don't have any dents to drive them by the outer side of the head..

think of the difference between a nickel..  smooth around the outside.. and a quarter.. little lines around the outside.. but you only need 2 or 3 lines knocked into it...  i have done them with just one...

a hint... with your needle nose pliers.. drag a chain saw file through the ends.. about 3/8 of an inch back.. this gives you tips that are flat on the ends.. but 3/8" back.. you get this effect.. /( )\
so you can grab the bolt..   man is this a great trick...  

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pepsi1
User
Posts: 94
Joined: 10/11
Posted: 01/07/13 08:53 PM

Perm27

A quick way to figure out if its fuel. Use carb clean, have a helper hold the throttle open, and crank the engine. If the engine starts and runs, its probably fuel related.

Replace the fuel filter, even if it's not a clogged filter. You will need to replace it if you replace the fuel pump.

Bob  

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