I am at my witts end with finding any solutions for getting my car smogged. That check engine light won't seem to stay off. Computer codes that keep popping up are: P1120, & P0401. Money is somewhat been an issue, but I just don't remember ever buying a second house, if u know what I mean! Please, car is our travel means. Single dad, 3 young kids, mom still nowhere to be located(her choice). Aaron
Code p1120 refers tothrottle position sensor1--circuit malfunction---causes ---wiring open cuircuit--/short circuit to ground/short circuit to positive---throttlecontrol unit---ECM
code p0401 refers to exhaust gas recirculation(EGR) valve system---insufficient flow detected. ---causes hose leak/blockage--basic setting not carried out (if applicable)---wiring---EGR valve---EGR solenoid----ECM. I would replace the EGR valve for starters Get unit from the wreckers. You may have to have the CPu reset with a code reader tool
Check the TPS and EGR
SOURCE: 2001 Isuzu Rodeo Check Engine Light flashes when accelerating.
I would change the trans flter, trans fluid, and have the linkage on the trans adjusted.
SOURCE: 2000 Isuzu Rodeo LS ~ check engine & reduced power lights
Do you know the OBDII codes? I just had to replace my Mass Air Flow sensor, it seems to have fixed my problems. But check the error codes.
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