cold start issue and high idle
February 25th, 2010, 4:29 PM
#41
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OK, just did a fuel pressure check...
Key on, engine off: 62 PSI...holds for 4 seconds and then drops to zero (I can hear a click right before it drops)
Key off, then key on, engine off repeats itself.
Tahoe starts right up...of course the tahoe is hot since I just drove her home from work.
Key on, engine off: 62 PSI...holds for 4 seconds and then drops to zero (I can hear a click right before it drops)
Key off, then key on, engine off repeats itself.
Tahoe starts right up...of course the tahoe is hot since I just drove her home from work.
February 26th, 2010, 7:29 AM
#42
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I am pretty sure a sticking EGR valve can cause hard starts.
From what I understand... You can check the EGR valve but letting the engine idle for a few minutes when you first start the engine. Then check the temperature of the EGR valve. It should not be hot. Should be the same temp as your intake manifold.
From what I understand... You can check the EGR valve but letting the engine idle for a few minutes when you first start the engine. Then check the temperature of the EGR valve. It should not be hot. Should be the same temp as your intake manifold.
February 26th, 2010, 7:36 PM
#44
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front and center of the motor. Round canister about 2-3" in diameter with a plug facing you as you are standing at the front of the motor. It has 2-12mm bolts holding it on. Those bolt heads are also facing you. I'd get you a picture, but it's raining out.
February 26th, 2010, 7:41 PM
#45
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I forgot that I already have a picture. Red Arrow is the EGR valve.
I cleaned mine, and replaced the gasket that someone never put in before me, and all my issues have cleared up. Great Idle, and no stumble. Runs like a champ now.
I cleaned mine, and replaced the gasket that someone never put in before me, and all my issues have cleared up. Great Idle, and no stumble. Runs like a champ now.
March 8th, 2010, 10:09 AM
#49
i've forgot if you have, but have you checked all vacuum lines, connections? has the distributor ever been taken out or moved? also, have you done compression check?
March 8th, 2010, 12:56 PM
#50
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checked vac lines (checked with gauge...nice and steady)
All plug wires checked
Dizzy hasnt been removed or moved
compression check hasnt been done...good idea
also noticing my gas gauge is bouncing...crap, I hope its only the fuel level sensor.
All plug wires checked
Dizzy hasnt been removed or moved
compression check hasnt been done...good idea
also noticing my gas gauge is bouncing...crap, I hope its only the fuel level sensor.