dorkidori_s13
Member
- :
- 2003 Mazda Protege5
So Ive been spending a lot of time researching the CEL P0171 aaaaaaaaand Im really stumped. But let me back up
A few weeks back, my P5 started having issues starting. Its gotten to the point where it takes roughly 2-3 times turning the motor over letting it rotate 4-5 times each cycle to get it to start. I can leave it to crank and it takes roughly 10-15 turns before it finally catches... And no matter which way I do it, the motor the starts weak then stumbles up to normal operation.
Thru my research, Ive replaced the upstream O2 sensor, the cam angle sensor and the crank angle sensor. Since I got the car almost 2 years back, I changed out damn near everything on my fuel system due to the pinging issues our cars experience in the heat. This included brand new parts for everything listed... Bosch fuel pump, OE 1.8 liter coilpacks, NGK plug wires, OE long tip spark plugs, OE fuel sending unit, OE fuel pressure regulator, OE injectors and OE fuel pulsation damper, Mishimoto aluminum radiator, SAMCO hoses and a Mishimoto cooler thermostat (I live in Vegas where its a billion degrees in summer). Ive cleaned the MAF numerous times, I have an AEM short ram intake with K&N conical filter (gets cleaned every few months with K&N cleaning kit) so there are no cracks in my intake piping (ive checked all of the couplers as well). Ive checked all the vacuum lines in the engine bay (outside of the 1 way check valve inbetween the runners of the intake manifold)... havent found a single cracked line. Im about to say screw it and replace ALL of the vacuum lines just so I know that issue is ruled out.
The car is currently having issues with bogging during acceleration up until around 3500 rpms (this started before the CEL came on). Last Tuesday while driving around, my CEL came on. I pulled the code with an OBD2 reader and started researching, plus replacing sensors that have been listen in regards to the CEL. I cleared the code a few days back, and the CEL came back on today driving over to Lowes.
So yeah, input please... This code seems to be REALLY vague and its literally like you just have to throw parts at the car until it fixes the problem.
A few weeks back, my P5 started having issues starting. Its gotten to the point where it takes roughly 2-3 times turning the motor over letting it rotate 4-5 times each cycle to get it to start. I can leave it to crank and it takes roughly 10-15 turns before it finally catches... And no matter which way I do it, the motor the starts weak then stumbles up to normal operation.
Thru my research, Ive replaced the upstream O2 sensor, the cam angle sensor and the crank angle sensor. Since I got the car almost 2 years back, I changed out damn near everything on my fuel system due to the pinging issues our cars experience in the heat. This included brand new parts for everything listed... Bosch fuel pump, OE 1.8 liter coilpacks, NGK plug wires, OE long tip spark plugs, OE fuel sending unit, OE fuel pressure regulator, OE injectors and OE fuel pulsation damper, Mishimoto aluminum radiator, SAMCO hoses and a Mishimoto cooler thermostat (I live in Vegas where its a billion degrees in summer). Ive cleaned the MAF numerous times, I have an AEM short ram intake with K&N conical filter (gets cleaned every few months with K&N cleaning kit) so there are no cracks in my intake piping (ive checked all of the couplers as well). Ive checked all the vacuum lines in the engine bay (outside of the 1 way check valve inbetween the runners of the intake manifold)... havent found a single cracked line. Im about to say screw it and replace ALL of the vacuum lines just so I know that issue is ruled out.
The car is currently having issues with bogging during acceleration up until around 3500 rpms (this started before the CEL came on). Last Tuesday while driving around, my CEL came on. I pulled the code with an OBD2 reader and started researching, plus replacing sensors that have been listen in regards to the CEL. I cleared the code a few days back, and the CEL came back on today driving over to Lowes.
So yeah, input please... This code seems to be REALLY vague and its literally like you just have to throw parts at the car until it fixes the problem.
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