20 Most Recent 2008 Mazda Cx 7 Questions & Answers

learn to use a volt meter, find the stopping point, on most cars it is. All fuses good, skip none. we test them. battery good and charged overnight. FAILS IN PARK AND NEUTRAL BOTH?<<HUMMMMMMMM The IMMO lamp talks to you, tells you it likes the key or not told in all Users manuals for this car <read that? paths (for sure this car, PCM runs starter RELAY) I see the schematic. IGN.key, IMMO box>>>BCM?> tells IMMO is happy to>PCM > and PCM knows tranny is in park or neutral and is GO for cranks. if NOT? the PCM blocks you. (Bad tranny switches)! starter relay DEAD. the PCM happy (and immo) the PCM closes the STARTER RELAY. and bam it cranks fast even 300RPM crank shaft fast) IF STARTER MOTOR IS IS DEAD, THE RELAY IS NOW HEARD TO CLICK (DOES IT)????? a 2 person test ,see? 1 at key 2nd at relay ear new it . heard. ------------------------------------- now way2. ONE CAN HOT WIRE ANY STARTER, MADE IN PARK +EMG brake hard set , we chock the Front wheels. then get access to the stater motor solenoid(on its side) right side front of engine,facing same. there 3 lugs , 2 huge(or 1) and 1 tiny remove Mr. tiny, and jump tiny to big outboard LUG (battery PLUS) grrrrrrrrrrrrrrgrrrrrrrrrrrrrrrrrrrrrrr (car is safe key off) if battery is good the starter spins. if chatters or just licks battery is dead or starter is dead, one can jump start car too. ---------------------------------easy no? ---------------------------------- now the volt meter. way. easy as pie. the only hard part is learning the art of back probing wires. we start to test 3 ways. (end, middle or keyside)<< wire paths best is in the middle but luck (fate) always wins this saga. at the starter relay we probe its 4 pins. (a skill set here) Using 1 of 2 Ignition keys, IMMO happy via cluster light happy) crank it. cranked, 12vdc across its coil pins. if not the PCM end is not happy. if yes the PCM is happy (wow just one test and now I know all that , yes.) and 12vdc at relay contact input (if not fuses are blown !!!) then key on cranked again, see this. and keyed crank, the output contact goes to 12vdc and makes it all the way the tiny starter pin. if not this wire is broken relay to stater solenoid or solenoid is dead, but is not the HOT wire test passes. ------------------------------------------------------------------------------ NO CODES my guess is done wrong.? OBD2 connected and working, crank for 10 full seconds. release key ,not off wait for up to 5min for the tool to see all cranking errors! now you see them even battery voltage fails and more. if lucky, but some cars can't see crank errors. IMMO YES! codes (DTC) immobilizer system B1600/1/2 ,bad key. got 2 keys , like it had new: some IMMo do not block cranks only blocks fuel.(or spark) my online schematics for this car STINKS , horrible coverage or could do 10x better.

If it has an automatic trans check Park-Neutral switch, if it's a manual trans check the Clutch-Neutral switch on the pedal

Probably a bad sending unit which is in the fuel tank. If it is always full then the sender is grounded. If always empty means there is an open in the circuit or the senders float is too heavy and will not float.

Sometimes a starter will develope a flat spot. You can tap the starter with a hammer to coax it into starting. Before tapping it verify the cables to the starter are in tact and if you have a volt meter you can verify if the ignition is providing power to it.

You need the services of a diagnostic specialist rather than someone who merely reads a code, misinterprets it and changes a sensor, the common approach. Codes are clues not intended to be taken literally and no components should be replaced until other equipment has been used to confirm or correct any original diagnosis. I am not an expert but the code indicates a high input to the mass air measuring device which would tend to suggest the circuit is being fed by a higher than normal voltage/current/signal that must originate somewhere. Check the wiring diagram for the origin of the supply - you could discover it comes from the ECU though that won't necessarily mean it is defective. A poor ground connection could prevent the internal voltage regulation from working properly for instance...

Poss timing belt snap?!

Under the car where the engine and the transmission are connected together.

check the ignition switch.i once had the same problem

No cooling system for it

When was the last time you checked the tramsmission fluid?

in uk roughly 300/400. in us dollars 600%