1G CEL code 41 Resistance question

[quickdeath]

Greetings. I've been trying to figure out why my girlfriend's Laser has been acting up recently. From what I could tell the car basically felt as though it had no power, couldn't hardly get up to speed, and the motor was shaking. Over the past week and a half the problem has arrived at this point.
I've inspected the spark plugs, wires, and gaps on the plugs, all are fine. Today
it finally threw a CEL, code 41. I checked the resistance on each of the injectors, all are reading 4 ohms. The manual said they should be reading between 2 and 3 ohms.
Does this mean that the injectors are shot?

Thanks in advance

 

[And_44]

Was that hot or cold for the ohm reading? The injector internals are temperature sensitive when they start failing they will work "ok" cold and fuse up hot and eventually just fail. How are the wire harness's to the injector's? Over time the wire wrapping becomes brittle and will crack and seperate causing the wires to touch each other. Is there any corrosion on the connectors? Try cleaning them out and use some sandpaper to clean the conectors or some terminal cleaning tool. The tool looks like tweasers but the two tips are coated with a rough service to grab tiny terminals and shine them up. Worth pulling the ECU and checking the condition of it. There are some axial resistors on the board that can go bad they heat up and will "toast" the board around them, there next to the ISC drivers. Also leaking caps could cause the rough engine. With the higher ohm rating they could be heating up those resistors. You could try one of the injector cleaning methods posted here on the injectors you have or just pick up a 2nd set. If you get used get 4 from same vehicle. Dont swap them around if you keep them together they "should" flow the same. And using the manual test the fuel injector box thingy on the fire wall, sorry cant think of correct term atm. When was last time you changed your fuel filter? Sorry for the rambling and big paragraph phone dont like me hitting enter to make paragraphs.

 

[quickdeath]

The reading I took was while the engine was cold. The wires that plug into the
injectors do feel old, however I didn't see any noticeable cracks.
I'll have to check the ecu when I get another chance to go over to the garage
and work on it, however I'm hoping that hasn't burned up again. When the original ECU died ~2 years ago, we replaced it with one that had the caps replaced.
If I can find a set cheap enough, I would find it easier to just replace the injectors. The garage the car is parked in I have limited time to work on the car each week. I think we replaced the fuel filter a couple years ago, but since I couldn't remember for sure I've got one to put in this week.
Thanks for the quick response. I'm sorry I forgot to post the car details:
1990 Laser 2l turbo, 5-speed, bone stock

 

[And_44]

Well keep us updated Check the above mentioned, getting new/used injectors last as that would be a waste if something you could check for free or the cost of a multimeter.

 

[NOSLO2PT0]

I had the same issue with one of my cars recently. Threw a code 41, narrowed it down to a bad cylinder. Swapped injectors, harness plug, everything. Swapped out the injector resistor box, and the car purred like a kitten. Worth a shot to try.

 

[quickdeath]

Well, ended up replacing a dead alternator, as well as all four injectors. The car seems to be running better than ever before now. Thank y'all for your responses