Lose power to dash and engine stalls...2.7 Diesel

If your Mazda B2900 Diesel truck's engine stops while driving and also if you lose gas pedal, there are several possible reasons for this issue. Here are some things you can check:

1. Fuel delivery: Check the fuel system for any issues, such as a clogged fuel filter, a malfunctioning fuel pump, or a damaged fuel line. Inspect the fuel tank and ensure that there is enough fuel.
2. Throttle sensor: A malfunctioning throttle sensor can cause the engine to stall when you release the gas pedal. Check the sensor for any damage or wear, and replace it if necessary.
3. Idle air control valve: A malfunctioning idle air control valve can cause the engine to stall when the throttle is released. This valve controls the amount of air that enters the engine when the throttle is closed. If it is dirty or faulty, it can cause stalling.
4. Electrical issues: Check the battery and alternator to ensure they are functioning correctly. If the battery is weak or the alternator is not charging it properly, it can cause the engine to stall.
5. Vacuum leaks: Check the engine for any vacuum leaks. Leaks in the intake manifold or vacuum hoses can cause the engine to stall.

It is recommended to have a qualified mechanic diagnose and repair the issue to ensure that the correct problem is identified and properly addressed.

There are a few potential causes for the engine stalling in your Mazda B2900 diesel when driving or when you let off the gas pedal. Here are a few things you may want to check:

1. Fuel delivery: If the engine is not receiving enough fuel, it may stall. Check the fuel pump, fuel filter, and fuel injectors to make sure they are functioning properly.
2. Air intake: If the air intake system is blocked or not functioning correctly, it can cause the engine to stall. Check the air filter, air intake hoses, and the mass air flow sensor (MAF) to make sure everything is clean and working properly.
3. Electrical issues: Faulty sensors or other electrical issues can cause the engine to stall. Check the battery and alternator to make sure they are charging properly, and check all electrical connections to make sure they are clean and secure.
4. Vacuum leak: If there is a vacuum leak in the engine, it can cause the engine to stall. Check for any cracked or broken vacuum hoses and replace as necessary.

It's best to take your car to a qualified mechanic to diagnose and fix the issue, as they will have the expertise and specialized tools to properly diagnose the problem.

Check fuel filters.

is it petrol or diesel best thing is when it is running for a couple of minutes get a garden glove and put your hand at the tailpipe and see if you are getting pressure on the glove if not the catalytic converter could have collapsed because it has become blocked best get it to a garage for a new one or good second hand one

2-3 POSSIBLE CAUSES 1 G28 OR ELSE SPEED SENSOR 2 FUEL PUMP FAULTY 3 WATER INSERTION AT THE ECU S CONNECTORS. NO CHECK LIGHT COMES ON RIGHT??

but can you save the stall, with a fast right foot.
when it stalls do any lamps die in dash or others?
12vdc to the EFI system is the first check.
loss of power, kills EFI dead as a door nail. so .../?????
and the fast foot trick is next , always.
1,2, test 1, test 2 in 3 seconds at stall.

fast foot"
1: easy, (idle air loss, ISC stuck)
2: tad hard, (egr stuck open ,clean it) or flooding.???
3: impossible , lost spark,. or lost fuel pressure.

and rail pressure is dont with a gauge
all other ways are useless, , unless dry.
only 30psi or more is valid. not less.
no injector runs right below 28psi. (read the specs)

my new jeep runs at 60psi. 3.8L
to check rail pressure ,step one is to get the spec.
the FSM cover this.
My FSM shows no V8s, is that a typo.????? sure...
see the wiki and do tell REAL engine.
http://en.wikipedia.org/wiki/Jeep_Cherokee_%28XJ%29

if you can not tell real engine, i can not tell real specs.
not ever.
USA car, or export???? what COUNTRY ?
again, what car, what country what engine?
cant fix cars , if you can not identify the engine.
here is the list

• 2.1 L (126 cu in) Renault J8S I4 (turbocharged diesel)
• 2.5 L (150 cu in) AMC I4 (gasoline)
• 2.5 L (153 cu in) VM Motori 425 OHV I4 (turbocharged diesel)
• 2.8 L (173 cu in) GM LR2 V6 (gasoline)
• 4.0 L (242 cu in) AMC I6 (gasoline)
• 4.0 L (242 cu in) AMC H.O. I6 (gasoline)
• 4.0 L (242 cu in) PowerTech I6 (gasoline)

all tell end if 1996.

on any 1996 , I6, 4.0 engines
1296 means. (not other engines!!!! or cars)
No 5 Volts to MAP Sensor
the 5v line is shorted ,or cut, or the ECU 5vdc power reg, is dead.

with the bad the engine EFI will be hopelessly stuck in limphome.
TPS dead, etc. and will run like craap
and stall.
P1 is a factory code, and you MUST mach code to exact engine,year and maker. or data you read is wrong.
P0 codes are federal codes. and are universal.
P mean powertrain errors.

Check your intake gaskets by spraying a water mist from an old spray bottle on them when the engine is running. Sometimes heat will expand the gaskets and seal them. When you find the leak, the engine RPM will change or the engine will stall.

Sparkplugs will do this when they are going bad. So will glowplugs on Diesel engines.

Also have your Battery checked. If the battery is weak, you will start at a low voltage and then as the Alternator catches up, the engine will get smoother when electric power is restored. The controls on your engine work off of Voltage readings so some controls will automatically set up controls bercause of the wrong Voltage for the condition.

Cold start circuit. Your engine will step up the idle and enrichen the fuel mix when a temperature sensor tells the controls that the engine is cold. There can be 2 temperature sensors and you want to check the sensor that operates the engine, not the dash gauge. You can tell which is the dash gauge by unplugging the sensor after the engine has warmed up(Running). When you lose your dash gauge, then you know that the other sensor is the one you want.

Make sure battery and battery cables are good , clean and tight.

Fuel Filter! Check also for water - there should be possibley a drain on the bottom of the fuel filter, try that first

Good Luck

you have most likely broken a trans mount causing the trans binding up and stall the engine