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1995 Mazda 626 Engine stall.

Tiny
ZEYAD
  • MEMBER
  • 1995 MAZDA 626
  • 130,000 MILES
When I start the engine at morning every thing goes well, but after delivering my daughter to school (about 6 Km away) and start the engine again ( I turn it off when leaving the car) it's rpm indicator goes lower than the average (500 rpm) and the engine shake a for a second and stop. I tried to find the air tuning screw to raise it but I couldn't if it is the reason. Can I find a diagram showing where it is if it is the solution for the problem, or is there any other reason.
Thanks in advance for your help.

Zeyad
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Monday, September 2nd, 2013 AT 10:53 PM

6 Replies

Tiny
DRCRANKNWRENCH
  • MECHANIC
  • 3,380 POSTS
The idle is not adjustable with a screw. The idle is controlled by a Idle Control Valve, IACV. It works to keep the idle steady when cold starting or under different engine conditions. You should check it and also have the fuel pressure checked.
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Tuesday, September 3rd, 2013 AT 12:14 AM
Tiny
ZEYAD
  • MEMBER
  • 6 POSTS
I think the idle is working because the rpm indicator decrease gradually with respect to the engine heat indicator, actually. I don't have such problem in winter. It shows up in summer.
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Tuesday, September 3rd, 2013 AT 1:20 AM
Tiny
DRCRANKNWRENCH
  • MECHANIC
  • 3,380 POSTS
You should get the trouble codes pulled. Any Advance Auto or Auto Zone will do this for free. You may want to test the fuel pressure as well. You can borrow the test tool to do this at the aforementioned parts stores.
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Tuesday, September 3rd, 2013 AT 2:13 AM
Tiny
ZEYAD
  • MEMBER
  • 6 POSTS
Thanks Dr. CranknWrench. I'll try to test it in an Auto Zone. The problem is my car is an old model and suitable software are hard to be found here in Iraq. Thanks again.
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Tuesday, September 3rd, 2013 AT 3:53 AM
Tiny
ZEYAD
  • MEMBER
  • 6 POSTS
I found the air adjusting screw. It exist near the accelerator cord and I solved the problem with raising it a little.
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Saturday, September 7th, 2013 AT 11:49 PM
Tiny
DRCRANKNWRENCH
  • MECHANIC
  • 3,380 POSTS
That is good news. I am glad the problem got sorted out. Come back to us anytime you need anything else.
Take care

Dr. C
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Tuesday, September 17th, 2013 AT 3:58 AM

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