Question about 1990 Mazda MPV

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I have 1990 mazda mpv a 3.O ltrs engine the problems is not continue to start,i have good apark from apark plugs and good enough pressure from fuel injector. i also check right timing and fuses and relay.but still same problems.only start about aseconds only and then stop again

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HAVE IDLE SPEED CHECKED OUT.IT COULD BE TOO LOW.ALSO YOU COULD HAVE A LOOSE IGNITION WIRE OR INTAKE MANIFOLD VACUUM LEAK.HAVE VAN HOOK TO A DIAGNOSTIC SCANNER SO A SNAP SHOT FROM SCANNER RECORD .THAN YOU CAN GO BACK PIN POINT WHATS CAUSING THE STALLING.A BAD INJECTOR WILL STALL OUT ENGINE.

Posted on Nov 15, 2009

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Check the key switck if it stop when you move it from start to run. bobg22

Posted on Nov 15, 2009

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Fuel filter 1990 mazda mpv


it should be by the driver side firewall under hood

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1989 mpv mazda does not start on cold mornings and days


I'm assuming the engine cranks with the starter but does not start and run.

check the operation of the cold start injector. This is a separate fuel injector that injects fuel into the intake manifold to help richen up the mixture for cold starts. It operates on a timer that is linked to a sensor that measures engine coolant temperature. Once warm or the timer runs out, the cold start injector is turned off. Other things to check:

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Feb 10, 2011 | 1989 Mazda MPV

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Mazda MPV 2.6 1989 good ecm, good injectors (but no voltage), good spark, good fuel pressure, engine cranking, but won't start. If I put a little bit of gas on the air intake it will start. there's no...


You probably have a bad ecm. These engines used the same ecm that the injected b2200 used and they had a lot of problems with capacitors that leaked and damaged the etching on the ecm's circuit board. If you do indeed have 12V on one side of the injectors and no pulsing ground from the ecm, then the problem either in the ecm or the wiring between the ecm and the injectors. When you say good ecm, have you tried a known good one?
If you're really good at desoldering and repairing pc boards, you can fix it yourself, all you'll need is a 47uF capacitor. Or you can send it out.

http://www.avproecm.com/mazda.htm

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2001 Mazda MPV, 2.5L eng. During accelerating on to highway, van lost power. Van continued to operate but with little power available. I have no engine light and my code "checker" shows PASS (no...


looks like not enough fuel pressure, check the fuel filter.
and the fuel pump pressure.with car running 60 psi
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than I would have the fuel pressure check and change the fuel filter

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You can try a junk yard or better yet the dealer for new.

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I had the same problem with my 2002 MPV. I ended up removing the IAC Idle are-control myself, and cleaning it really well (with some air intake cleaner). Put it back together, and it's been running great for the past year.

Not too difficult of a project, I'm no mechanic, but if your good with tools, it's not to bad.

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