Search results

more information, this morning it pitched a P0401 code, after reset, the CEL has not come on after 2 trips. Is this a PDFE sensor problem?

Is checking the fuel pressure something I can do? What should the pressure be at the injector rail?

fuel filter was the first thing I did. I'm not sure what a restriction in the pcv system would look like. Could the DPFE cause this?

I already cleaned the MAF with the approved MAF cleaner from NAPA 3 times. Cleaned and lubed the IAC. Checked for a real vacuum leak with the old "point an unlit propane torch at the likely spot and listen for a change in RPM" trick, didn't find anything. The CEL seems like it is a...

Ok a little knowledge can be a dangerous thing, and I have as little as anyone. Here is my (ok, one of my problems), 02 Trac with 41,000 miles. I've been getting CEL with P0171 and P0174 for about a month. I got on the site and checked all the relevant posts. It is not the elbow. I took the...