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Truck wont start

Truck starts fine in the morning but cuts off by back fire and than wont restart

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The following are the general instructions on the start of diagnosing any electronically controlled engine or transmission problem.

The engine and the automatic transmission (transmission control is only for automatics, engine is still computer controlled no matter the transmission type) in this vehicle are computer controlled and in most cases when a fault occurs a fault code is stored in the memory of the computer control module. There are exception to this, such as the Mass Airflow Meter and fuel pressure problems. What must be done is to have all the basic testing done such as a scan of the system for fault codes as well as a check with a live data scanner tool for engine functions that are not within range of normal, a trained technician is required to know what is correct and what isn't, then based on careful diagnostics done from a factory repair manual the correct part is replaced or the wiring repaired or the computer replaced (known as the PCM or ECM,ECU), which is very rarely the problem. Other basic checks must be done as well such as mechanical problems with the engine as well as engine state of tune and mileage on the engine. The transmission can have mechanical issues as well such as no gear engagement at all or a failed pump or other pressure related problems. Also engine mechanical problems can and do cause many drive-ability related problem such as rough idle and other symptoms.

Posted on Nov 01, 2012

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Posted on Jan 02, 2017

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SOURCE: 1990 Chevy Scottsdale 1500 wont idle when first starting cold

ICM idle control module, loc throttle body, it may be dirty, remove clean or replace, its easy..

Posted on Jul 29, 2009

Blessedbygod
  • 85 Answers

SOURCE: 1997 chevy c 10 truck wont start and back firing

You should begin by static timing it. Mark #1 location at distributor on engine or something you can refer to later. Remove Dist. cap make sure the distributor rotor is rotating when engine cranks, If it does not the timing chain broke. If it rotates:
1. pull #1 plug, place thumb over plug hole and rotate balancer with socket wrench till it blows your finger off hole. This is #1 TDC compression stroke.
2. look at distributor rotor--it should be pointing at #1 location mark you made earlier if it is you have a spark issue.
3. If it is not pointing to #1 you remove Dist. hold down bolt under Dist. and carefully pull the dist. up while rotating rotor.
4. You will need to advance the dist. a few teeth past#1 (rotating Rotor) then re-install dist. if it doesn't line up to #1 keep repeating step 4 till it does. After you get it right you should be good to go. A timing gun will be needed after to clock in the timing after installing the distributor.
Good luck!!!

Posted on Oct 15, 2009

  • 1 Answer

SOURCE: MERCEDES 190E AUTO.1993,CUTS OUT WHILE

I had a similar problem on my 190E 2.3 1992.
I solved it replacing the relay multi use with 5 pin connection. It's cheap and probably will resolve it.

Posted on Jan 23, 2010

  • 2 Answers

SOURCE: 1995 dodge ram v8 it has a kill switch i have to

can not find gas kill switch for 1996 dodge ram 1500

Posted on Jan 30, 2010

  • 248 Answers

SOURCE: wont start

fuel pump ok...clean inside the throttle body with spray carb cleaner...make sure the engine is cool and do not start it while real wet with carb clnr...BETTER YET,,,,get yourself a can of SEAFOAM@ (9$), and follow directions on can to clean your fuel system...it works great...your car does smoke while your using it but goes away quickly...makes big diff in the way your 305 runs....hope this helps....thanks

Posted on Mar 16, 2010

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1 Answer

Was running fine on interstate, started losing power on hills, cut off would not restart


When it fails to start-- do you have spark or injector pulse or
fuel pressure-- while cranking--?

Could be a crank sensor --but replacing parts with no testing,
is not the way to go --learn how to test components

Could be a crank sensor failed, fuel pump or timing issue,
chain or belt whatever it has

Look at Professional Scan Tool Data--codes or not, that is
always where you start & check the battery out is always a first
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