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Cold engine starting problem. what is cause. starter turns over, but engine does not fire. oil indicator lamp lights up after few starting attempts.

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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 08, 2012

Testimonial: "Thanks for your insight. Two garages, so far, have been unable to rectify fault, despite being billed for non-rectified work. Will try to find a specialist repairer. Cheers."

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Posted on Jan 02, 2017

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SOURCE: H2 Hummer

Today 11-12-08 my 2003 H2 Hummer would not start. Checked battery it ischarged. Cables tight. Tried to start with portable booster pak. No go. Tridto jump start with my wife's Suburban. Still no go.
When I turn the switch I hear a single click and that is it. No engine turning over. While trying to start with key the headlights go out. Out of ideas, Will take to Chevy garage in am. Will post solution.

Posted on Nov 13, 2008

dr_greg
  • 192 Answers

SOURCE: malfunction indicator lamp

possible o2 sensor heater intermittent failure..try warming up the vehicle and see if it goes off ...high rpm right after start up with a short fast run to the store or something like that couldve caused this bank 5 malfunction...

Posted on Apr 10, 2009

  • 333 Answers

SOURCE: 1999 Camry; Starter won't work when engine is cold

There are contacts located inside the solenoid of the starter that fail with age.

As the contacts where down, the starter likes to 'stick' and can take many tries to start, often requiring jostling like turning the wheel.

There are two options to correct this. The first obviously is to replace the starter.
To save some money you can replace the contacts instead.

Doing this requires unhooking your battery and removing the starter from the car.
Then remove the access plate on the back of the solenoid (3 8mm bolts), take out the plunger and spring. From there you can see the copper contacts, and how they have worn. Remove the 12m and 14mm on either side of the housing and push the bolts through to release the contacts and install new in the same order they came apart.

If you are taking this to a repair shop, be advised most independent shops will just try to sell you a $450 starter. Provide them these instructions or take it to a Toyota dealer and ask for "starter contacts" and they will know exactly what you need.

Posted on Sep 20, 2009

  • 6982 Answers

SOURCE: 1995 Jeep Wrangler 2.5L Fuel Pump/Check engine light

Could be one of several items...I'd check the fuel pump relay, auto shutdown relay and the ignition switch itself. I'd bet on it being one of those relays but, we all have been fooled at least once!!! I'd also make sure that body and engine grounding is good and clean. Relays can't work properly without a good ground.

Posted on Nov 03, 2009

  • 437 Answers

SOURCE: On my 2000 BMW 740iL, engine doesn't want to start

charcoal fuel cannister, fuel filter. probably has vapor lock.

Posted on Aug 10, 2010

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