my 93 lx has not been starting after its sets all night.. i checked main relay one day and done some solder.. and it started.. but after sitting all night again no start.. any one have any suggestions .. i have pics on my profile as you can see about everything is good plugwires.. plugs ect...... i just cant figure out the problem

 

What is it failing to do? Is it cranking? Turning over? Stalling?

 

yes its cranking. and trys to start but dies. but sometimes starts when the sun goes down i dont know its weird

 

Check your ignition parts - a severely worn distributor cap & rotor and spark plugs can cause a morning no-start due to condensation that develops on the electrical contacts overnight. If you haven't changed these parts within the last 30,000 miles, they're due for replacement. Pick up a new cap and rotor and a set of NGK ZFR5F-11 spark plugs.

 

already put new cap coil igniter.. never changed the whole dizzy,.. but i dont think thats what it is.. cause it would never start if one of those were bad

 

Rotor? Plugs?

Have you physically checked for sparks when the car cranks but will not start? Is the spark weak and yellow or strong and bluish white?

 

Just needa try doin your average 30,000 mile tune up!!! Check BATTERY connections also. Corrosion can happen.. Make sure battery has a charge, and make sure all your spark wires are pushed down tightly!!

 

what you need is a pgmfi main relay. when the weather is hot the pgmfi relay solder points get cracked

 

I say check your fuel pump.... 20 yr old pump will go bad.... slowly.

 

i think i figured the problem out.. first i thought the tw sensor was bad cause i unplugged it and it started.. but no next day after it set all night no start again.. so i done some research and checked ny ecu ground which was coroded . so i grounded it better and it started and has been starting since.. but im not sure fuel pump could be going bad but i checked fuel pressure regulater fuel is coming out so if the pump was dead no fuel would come out...right.....