Mazda B4000 Won't Crank | Ford Explorer - Ford Ranger Forums - Serious Explorations
  • Register Today It's free!

  • Holiday Special! - 2 for 1 Elite Explorer sale!

    Right now you can purchase an Elite Explorer membership for $20 and receive a two year membership!
    If you have an existing Elite membership contact me by PM and I will upgrade your account manually.

    Click Here to start your membership and get rid of the ads!

Mazda B4000 Won't Crank


New Member
August 16, 2013
Reaction score
Year, Model & Trim Level
1998 Mazda B4000
I have a 1998 Mazda B4000 with manual transmission. Recently it has got an intermittent starting problem. It's not the clutch pedal sensor, starter relay, starter/solenoid or the ignition switch as I have replaced all these. When this problem happens the engine will not turn over and there is no power to the starter relay. The radio etc. works and all the instrument lights come on. If I apply power to the starter solenoid the engine cranks and starts normally. The immobilizer key fob works properly.

I think the problem is in the factory anti-theft device. The vehicle does not have a PATS system. Since there is no power getting to the starter relay I think it might be a faulty starter interrupt relay but I can't check that because I don't know where it is. It may also be a faulty anti-theft RAP module. The truck starts properly when it's cool outside and seems to be a problem when the interior gets hot. This makes me think it some electronic module issue.

Has anyone else had this problem? If so, how did you fix it? Does anyone know where the starter interrupt relay is located? Is there any way to disable the anti-theft system?

Many thanks in advance.


Pumpkin Pilot
Staff member
Elite Explorer
February 8, 1999
Reaction score
City, State
Wayoutin, Aridzona
Year, Model & Trim Level
'93 XL Pumpkin Edition
I'm going to bump your thread up for you. Sorry I don't have an answer... Hopefully someone else will have an idea.