Why does my Mazda 5 crank but not start?
The car will crank and crank and crank but will not start. On the initial crank the fuel pump will come on, the injectors will fire once and then nothing. No check engine light or other indictors of a problem. It’s as if the PCM is seeing (or not seeing) something it doesn’t like and shutting down the process.
Why is there no check engine light on my Mazda 5?
No check engine light or other indictors of a problem. It’s as if the PCM is seeing (or not seeing) something it doesn’t like and shutting down the process. Here’s what I (and various mechanics) have done.
What are the symptoms of a car not staying running?
Some of the symptoms are: car dies right away, car cut off after starting, car won’t stay running in the cold, and car won’t stay running. Below is 5 ways to fix the problem. Number one. Idle air control. The idle air control is responsible for maintaining idle.
Where is the 12V fuse on a Mazda 5?
On most mazdas of this generation the wire that sends 12v from the relay to the starter motor solenoid is suspect. The wire is red and slightly thicker than the others that leave the fuse box, it attaches to the solenoid on the starter motor via a spade connection.
The car will crank and crank and crank but will not start. On the initial crank the fuel pump will come on, the injectors will fire once and then nothing. No check engine light or other indictors of a problem. It’s as if the PCM is seeing (or not seeing) something it doesn’t like and shutting down the process.
Why does my Mazda RX 8 engine not start?
There is no easily accessible fuel pressure regulator or fuel filter as both are built into the fuel pump assembly. Worst case scenario, if this engine cranks but won’t start it’s likely got bad compression and will require a rebuild, however if your lucky it might be something else.
No check engine light or other indictors of a problem. It’s as if the PCM is seeing (or not seeing) something it doesn’t like and shutting down the process. Here’s what I (and various mechanics) have done.
Why does my car not start when I crank the engine?
If the engine doesn’t crank, or makes an unusual noise when cranking, you may have a starting system problem. The car’s security system may have made an error that disabled the fuel or ignition system, or the chip in the key may have failed.
If the engine doesn’t crank, or makes an unusual noise when cranking, you may have a starting system problem. The car’s security system may have made an error that disabled the fuel or ignition system, or the chip in the key may have failed.
There is no easily accessible fuel pressure regulator or fuel filter as both are built into the fuel pump assembly. Worst case scenario, if this engine cranks but won’t start it’s likely got bad compression and will require a rebuild, however if your lucky it might be something else.
How to know if your engine has no spark?
First Confirm Your Engine Has No Spark. 1 Disable the fuel system by removing the fuel pump fuse or relay. 2 Insert a spark plug tester into the plug boot and ground it on a piece of metal on the engine. 3 Finally, Have someone crank the engine and watch for spark.
Why are there spark plugs in my Mazda 3?
Took out the spark plugs, then rotated the crankshaft pulley and I could see the camshaft rotate, so that meant to me the timing chain is still in one piece and at least partially functional. Next put a screwdriver into spark plug hole #1 and set the crankshaft pulley to its timing mark.
How to solve ” I have no injector pulse “?
An expert that got 5 achievements. Re: I have no injector pulse. I have plenty of fuel… There is an injector fuse. Pull an injector plug , 1 wire should have 12 volts to it. the other goes to the PCM. The PCM is set up so that it has individual injector drivers, Meaning that you could loose 1 or 2, but loosing all 6 at one time is very unlikely.
Can a PCM loose all 6 injectors at once?
The PCM is set up so that it has individual injector drivers, Meaning that you could loose 1 or 2, but loosing all 6 at one time is very unlikely. Injectors do run off both crank and cam sensors, but mostly off the cam. And when the cam sensor does fail, The PCM goes into default mode, using the last stored run.
Why does Mazda 6 I 2.3L engine not start?
Otherwise you have already done all the testing possible to prove that the entire vehicle is operating properly and the only possible cause is a faulty PCM. All Mazda service manual no start diagnosis step have a final test that says if all other test prove out ok then the next step is to replace the PCM.
What kind of spark does a Mazda 6 have?
After that there is nothing but cranking – no spark, no injector pulse. My Solus Pro shows 2.5V on Vref when I know it is supposed to be 5.0V.
How to diagnose a Mazda 6 no start?
All Mazda service manual no start diagnosis step have a final test that says if all other test prove out ok then the next step is to replace the PCM. You can also ship your PCM in to a computer shop that can rebuild it for you. Experience: 19 yrs. experience. Mazda Senior Certified Tech, with Ford, Linc. & Merc. experience.
Is there a problem with my Mazda 6i?
Mazda 6i: “04 MAZDA 6 i 2.3L Engine. No-Start. No Codes.”Yo… “04 MAZDA 6 i 2.3L… “04 MAZDA 6 i 2.3L Engine. No-Start. No Codes.” You may recall working this problem about three years ago, but there was no conclusion to this post and I am having the very same problem with a 2003 same vehicle.
Otherwise you have already done all the testing possible to prove that the entire vehicle is operating properly and the only possible cause is a faulty PCM. All Mazda service manual no start diagnosis step have a final test that says if all other test prove out ok then the next step is to replace the PCM.
Took out the spark plugs, then rotated the crankshaft pulley and I could see the camshaft rotate, so that meant to me the timing chain is still in one piece and at least partially functional. Next put a screwdriver into spark plug hole #1 and set the crankshaft pulley to its timing mark.
Is the Mazda CX7 2.3L turbo engine still running?
I know that when I started doing the VVT jobs on the CX7 2.3L turbo engine and had installed a couple incorrectly that the engine still starts but the VVT would make loud noise that sounded like engine was coming apart. It still started and ran but may have been more then 4 degrees off.
Why does my Mazda 3 not start when parked?
The starter itself or a starter solenoid may be faulty. A problem with a neutral safety switch. If a car does not start with the transmission parked, but starts in neutral, it may be due to a problem with a neutral safety switch or the shift lever cable.
Where is the ignition switch on a Mazda 3?
An ignition switch is an electrical switch installed on the rear of the ignition lock mechanism. If shaking the key in the ignition switch helps to start the car, you should check the ignition switch first. The starter solenoid control wire may have a bad connection.
What kind of engine does a Mazda 3i have?
I have a 2005 Mazda 3i 2.0L 5 speed manual. I bought it back in April with 92,000 miles and it now has 110,000 miles. It has a catback straight pipe exhaust and the previous owner said the engine was swapped, due to a timing chain failure on the previous one.
I have a 2005 Mazda 3i 2.0L 5 speed manual. I bought it back in April with 92,000 miles and it now has 110,000 miles. It has a catback straight pipe exhaust and the previous owner said the engine was swapped, due to a timing chain failure on the previous one.