Ditto Michael's answer about getting a readout from the car's computer to see if any trouble codes are held. In the USA Autozone will do this for free I believe.
Your problem happened to my 95 V6. A lengthy process found a sticking injector, but when that was replaced the problem continued!
It was eventually found to be a faulty ECU, the computer itself, which was not governing the injectors correctly, and putting in too much fuel.
Another possibility is a bad spark plug or 2, then maybe a vacuum leak. Also check for splits in the big flexible hose leasing from the air cleaner box.
Try renewing the fuel filter if the engine check light is not coming on. If eng check light is coming on then get decoded
SOURCE: 99 tacoma
Still need the codes.
Injectors can go "bad" in a couple of different ways; all they are is an electromagneticaly controlled nozzle. When the ECU "fires" the injector, it pulses a ground circuit for 4-8 milliseconds, the electromagnet powers up, the valve at the bottom of the injector opens, and the fuel shoots out, under pressure. The wire can be bad/chafed/corodded/ The electromagnet may be weak. The nozzle may be stuck. Lots of things. But, to put in an injector for a number 4 cylinder misfire (p-0304 code) would be one of the last things that I would do.
62 views
Usually answered in minutes!
×