my name is***** own Dons High tech,i have 2004 Toyota tundra stalls when cold if you leave throttle down motor will quite,but intermittent at times a other shop replace both upstream 0/2 senors customer is saying that is when problem started the other shop also replaced Mass air flow,i tried replacing new sensors with the old ones started 2 times and then returned to stall,fuel pressure at pump blanked is 90 psi i squeezed off fuel return line again started and run fine 2 tryes and back to stall,coolant temp operates normal,mass air flow shows air moving throw it,the test for 0/2 sensor heater shows fail, i tested bank 2 sensor on has 12 volts and -from ecm, to day after setting all Sunday started and run fine.i have had my own shop for 35 years i use snap-on Versus scan tool,i think ECM is bad,I would like your feed back thanks for any help Don
JA: Are you certain it's the fuel pressure sensor that's in need of attention? What about the fuel rail? Have you checked it yet?
Customer: i wanted to check fuel,presure at engine
fuel line are in bad shape cannot get hooked up,fuel rail looks ok i wound not think it could be plugged i did renew filter,i think i need to cut the lines and renew so i can get a reading,the only thing after a 5or ten mins runs fine
JA: Are you fixing your Tundra yourself? What have you tried so far?
Customer: my text above i said i was a shop owner,fixing for some one else also what i have tryed is also their
JA: Anything else you want the mechanic to know before I connect you?
Customer: no i have used just answer in the past