New Fuel Pump that energizes and then shuts off.
cleaned fuel injectors.
New Fuel Filter.
The only thing that I can think of is that the fuel pump isn't building enough pressure. any suggestions?
anyone know of a carb conversion for a del sol? I am so sick of this fool injection....
THANKS.

 

check your grounds....tranny, front by valve cover and thermostat

 

it cranks fine but only starts with starting fluid. the fuel pump is runs and cuts off as it should. I'm guessing that it's not building fuel pressure but then it would keep running, right?

 

missing a ground is the same symptom

 

It can't be a ground because it starts right up with starting fluid. The fuel pump is energizing , building pressure then shutting off as it should.

 

kinda scary way to check fuel pressure, crack the fitting at the fuel filter, key the ignition, does gas come out., if yes, then move on to fuel injectors, get the noids from Autozone/Orielys and see if the injector are getting electric, if not, check the GROUNDS.
If no fuel comes out of the fitting, that means you are not building enough pressure., CHECK THE GROUNDS
never ever NEVER say it CANT BE, Many times things will look right on the surface, but as you dig deeper, you will find that just cuz it looks ok, its not

 

simply put....if anyone comes onto a car forum asking for help and then acts like they know it all...what's the point of asking?? We are all here to learn from one another and pass along knowledge.

 

sure, but when you say "check the grounds" it's not very specific. do the fuel injectors have a separate ground? if so where is it? generally if you have a ground issue your car won't crank. this fuel injection nightmare is all new to me. I'm an old car guy. I hate this unnecessary complexity but I like the car so I have to learn about it. so if you say "grounds" please be more specific because I don't know very little about fuel injection troubleshooting. THANKS

 

ok, but "the grounds" where? which grounds specifically are you talking about? THANKS

 

It's listed in my post above...

 

the transmission to body ground likes to get corroded because it is so close to the roadway. Take it off and literelly smack it on the pavement. That will remove any corrosion inside the wire wrap. Do the same for the battery to body ground.
Did you do anything else to the engine before all this started?

 

ok, thanks... sorry... but what I don't understand is why it fires right up with starting fluid. do bad grounds cause the injectors to not get sufficient voltage?
THANKS!

 

Something is telling the injectors not to work. It could be a bad ground ( every manufacturer uses the smallest dang wire they can get away with). It could be a blown fuse, heck it could be your oil pressure sensor or even the crank sensor It will fire with starting fluid because the problem is not in the ignition system. You need air/gas/compression for the engine to work. You have two out of the three.

 

I’m a dumb dumb. You need spark also. And you have that as well

 

I have everything but fuel. I retightened the grounds and will give it another try as soon as the storms leave.
Yes, that's why I didn't understand how a ground can be responsible UNLESS the fuel injectors aren't getting proper voltage.
I've owned a 62 Chevy for 40 years that never lets me down. this fuel injection is a nightmare.

 

An issue with either the Main Relay or ECM can also cause the fuel pump not to work.

The ECM works in conjunction with the main relay to supply power to the fuel pump.

There are actually two relays inside the main relay; one relay provides power to the ECM and injectors, the other relay provides power to the fuel pump. So, it is conceivable one relay may be working; but, not the other one for the fuel pump.

The ECM has to send a ground (-) to the main relay coil to energize so that the fuel pump relay contact closes and provide power to the fuel pump. If the ECM does not send a ground (-) to the relay, no power will be sent from the relay to the fuel pump.

The fuel injectors gets power (+) through the main relay and gets ground (-) pulses from the ECM.

Ground G101 located on the thermostat housing is the ground used by the main relay and ECM. Various power inputs are also used by the main relay and ECM.

With age, the main relay solder joints may fail, capacitors inside the ECM may leak and fail.

These archived website pages has info. regarding how the main relay work. The terminal pin numbers in the following links does not necessarily correspond to your Del Sol pin numbering. It also does not necessarily mean the main relay is faulty; I am just posting more info. for you to look at other areas.

https://web.archive.org/web/20080805...ion/index.html
https://web.archive.org/web/20080821...html#mainrelay

 

When you cleaned the injectors, how did you clean them?

 

yes, but the fuel pump runs then shuts off like normal when I turn on the ignition. so it's getting power..... I just redid the grounds again and still no start so I backed out the fuel filter nut and not one drop of gas came out when it should still be under pressure. I'll bectcha that the new fuel pump I got on flee bay is running but not pumping. maybe the plastic impeller went bad. I'm going to change it asap. THANKS FOR ALL THE REPLIES.

I'm checking out those links now. THANKS!

 

I removed them, put them in a vice without crushing them, hooked-up wires to the terminals then to a 12v battery and used a syringe with lacquer thinner as the cleaner. I tapped one lead to the battery as I applied pressure to the syringe plunger presurizing the thinner into the injectors. I did this until they sprayed a nice fine mist. all worked. if it was an injector problem it wouldn't likely be ALL OF THEM AT THE SAME TIME and it would run on a couple cylinders at least. I'm going to replace this ebay fuel pump and I'm pretty sure that will fix the problem. THANKS.

 

I have had a couple beers so forgive me (or not I don’t give a dang). By chance did you put the fuel pump hoses back correctly? Take it ne off and see if it shoots gas. Did you put the connectors on the injectors back correctly? Don’t ask how I know

 

after I changed the fuel pump it was starting and running strong so that's fine... can a fuel pump run and still not be pumping fuel?

 

Not so much but yes. It will build pressure. If it’s making noise and then turning off it’s doing it’s job. Does it run now?

 

it runs when I turn on the ignition which should be enough to get it started but after I cranked the engine I loosened the fuel filter bolt and no gas came out . it should have shot fuel out.

 

So bad fuel pump or clogged fuel sock. Check the fuel pump.

 

hitch a ride to autozone/orielys/advanced and borrow a fuel pressure tester. see what the fuel pressure is before you redo the fuel pump.