1990 b2600i not running

Tiny
JSTANKE
  • MEMBER
  • 1990 ALL OTHER MAKES ALL OTHER MODELS
I am about at wits end. I own a 1990 b2600i and it has been great since 1998 when I bought it. Until now. The problem started as an intermittent one where while driving, the vehicle would start to lurch and lose power, sometimens die altogether. Upon starting it again, engine RPM would not go above 1500 RPM, any further depressing of the accelerator would cause the engine to die out. After a while, the problem would clear up and I could drive again, temporarily. The intermittent problem continued. I did all the routine stuff, changed cap, rotor, plugs, air filter, plug wires, fuel filter, PCV valve and the problem persisted. Next thing changed out was the fuel pump and the associated cutout relay. After doing all of this started the vehicle. Again, would not go above 1500 RPM. Reset FAILSAFE mode and engine ran great for about 2 minutes then fell back into failsafe mode. Tried to reset the failsafe again and now the engine doesn't want to start at all. Also, I cannot get the malfunction code to flash for me. The local shops all have the OBD2 type analyzer and the connections do not match my terminals so I am trying to jumper the test terminals to flash the service engine light. Can you help?
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Thursday, January 5th, 2006 AT 1:08 AM

3 Replies

Tiny
2CARPRO JACK
  • EXPERT
Sounds like the MAF sensor or TPS sensor
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Tuesday, January 24th, 2006 AT 5:42 PM
Tiny
COSMO
  • EXPERT
Ok, This is a little bit of work for the average. Your gonna need to locate the engine ecu (or PCM). It is behind the passenger side kick panel. By the way, the first thing you need to do is disconnect the battery. Ok so you have found the ECU, now disconnect the harness from it and take it to your bench and remove the screws from both side of the ECU and look inside for corrosion of any type, or burn marks. If you find any, sorry your screwed. You need a new computer.

Cosmo. Mazda Tech
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Tuesday, January 24th, 2006 AT 11:36 PM
Tiny
JSTANKE
  • MEMBER
Alright, so after chasing this fault around for a long time, I figured on my own that it must be a computer (ECU) problem. Pulled it out, inspected it, noted leakage from capacitor. ECU was sent to avproecm in Fort Myers Beach FL. For $150.00 I got a rapid turnaround and a pickup truck that runs as good as new. The people down there know what they are doing and do it well for a modest price. Also offer a lifetime same owner warranty. Check it out www. Avproecm. Com. Thanks for eventually getting back to me and thanks to avpro I am not screwed, I am back on the road.

Jim 8)
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Wednesday, January 25th, 2006 AT 9:10 PM

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