2002 Mazda 626 (2.5L) has rough idle and RPM dips up and down going down drive way in first gear.
Also, sometimes takes A LOT of cranks to start.
This issue has been degrading over time. First it was just rought idle. Now I have problems starting, cranks for a while and then fires up and then dies. After a minute or so of cranking up and dying... it finally cranks up and I am able to hold at 2000 RPM until the idle is somewhat stable again.
Plugs and wires are new.
Check Engine light is on and has been for a while.
the 4 Check Engine codes are
P0400 - Exhaust Gas Recirculation Flow
P0300 - Multiple Misfire Detected
P0302 - Cylinder 2 Misfire
P0305 - Misfire Detected
I removed and tested the EGR valve (very difficult btw), and according to procedure in Chilton Shop Manual... the EGR valve is good.
I have a 95 626 Lx 2.0 I4 that was running great, shut it off came back and only cranks with no start.
well I dug around here enough to find how to manually run/test the fuel pump/relay with the diagnostic plug in the engine bay. I unhooked the fuel line and tried it and it pumped seemingly fine, put it back together and pulled the pressure regulator and tested again to check for a rail blockage, good pressure.
I sprayed starting fluid in the intake and hit the key and it wanted to pop off so I have spark, that being said I know I have fuel pressure, a working relay and spark, what else would cause a crank no start?
While testing with the fuel line off I did determine that the fuel pump wasn’t running with the key on or during crank, only when done manually
My son bought a 2001 Mazda 626 es which sat for At least 5 years, I replaced fronts brake pads and rear shoes I also replaced the master cylinder for abs system now my problem is I only have around maybe half or less brake pedal. Rear brakes have no adjustment except when you back up and step on b rake pedal to adjust. Does anyone think that I need a new booster or have an suggestion to get a better brake pedal.
I am driving a 1989 Mazda 626 LX. Everything I assume is stock for that model.
Recently, my fuel pump went out on me and I needed to replace it. About a week later I tried turning it over after a couple of drive cycles and it would do the same thing that happened when the fuel pump died.
What should I do to troubleshoot the intermittent startups?