I just had my 91 2.5l dakota rebuilt and now the check engine light is on. the light was not on before. I checked to see what codes they were and i got 13,23, and 27. I checked through the faqs and found the post but i still dont understand what they mean.

 

So all you have is the check engine light? Does it start and run and idle and drive good?

You might want to post what the codes stand for so we don't have to look them up.

13** No change in MAP output voltage from start to run
23** Intake air temp sensor signal outside acceptable range
27* Injector control circuit failure

13- Maybe a bad Manifold Air Pressure sensor or bad wiring.
23- Intake Air Temp sensor may be bad or bad wiring.
27- Bad fuel injector or low fuel pressure or bad wiring.

Unplug the battery for a minute or 2 to reset the PCM and see what comes back on.

 

sorry about not putting what the codes were for. well i reset the pcm and the only code that come back on was the MAP sensor 13 code. when i first start it it just starts and dies i have to give it a little gas for it to stay on. and then it idles rough until it gets to normal temp.

 

My 90 dak. had all those symptons and after a couple of hundred dollars in sensors I hauled off and punched the ecm and the engine started to idle fine. Lasted a couple days and started stalling and running rough. pulled the ecm plug and squeezed lythium grease in the prong holes, runs good but think I need to replace the ecm eventually.