The check engine light (service engine soon) comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, the problem is in the emissions or something that is affecting the effectiveness of the emissions, but other causes can trigger the light to come on, too. To determine the cause, the vehicle will need to be taken to AutoZone or a shop that has an OBD2 scanner, or for 1995 and earlier models, an OBD1 scanner, While a scanner will not give you the magic answer, it will give you a code that narrows down the problem area.
(possibley) but most likey NO
If the light is on, it will need checked and diagnosed.
That is the check engine light.
No, it will not interchange.
yes it will, only a few mods will need to be done
Yes there is no difference in the two years 2001 was a carry over from 2001.
no a 2001 dodge neon motor will not work in a 2000 neon
No, The neon was revamped in 2003, with updated engines and chassis changes. As a Chrysler mechanic, the 2000 dodge neon 2.4L DOHC is the best. That will fit in a 2001 also.
no the light will not come on. i thought the same thing until i was almost right empty. i found that out when it over heated
YesYes
You will need to get the cause of the check engine light repaired.
Between the engine and transmission.Between the engine and transmission.