my idle is a tad bit roughand takes a few seconds to settle at 550 rpm in gear after stopi compressed diaphram on egr and it comes close to stalling, but does not .
i have a gasket already and gonna pull egr 2morro
any input is appreciated...
do these symptoms point to dirty egr ??James
EGR compressed diaphram and, will not stall car
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Q45tech
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1995 G20t 5 speed 334,000 miles 16" 2002 wheels - 205/50/16 Sr20ve vvl
Re: EGR compressed diaphram and, will not stall car (jamesmost)
Every gasoline engine in US eventually gets a dirty egr system depending on the percentage of cruise vs idling and acceleration hours/miles.
If normal 9-10% egr air flow [ vs MAF air flow] at cruise starts dropping due to partial blockages - the Nox parts per million go up and up in emission test.
Too many variables to say for sure if manual engagement of EGR doesn't fully stall an idling engine.
Cleaning the entire system can do nothing but good even if it only improves highway MPG by a few percent or decreases NOX by only 10%.
If normal 9-10% egr air flow [ vs MAF air flow] at cruise starts dropping due to partial blockages - the Nox parts per million go up and up in emission test.
Too many variables to say for sure if manual engagement of EGR doesn't fully stall an idling engine.
Cleaning the entire system can do nothing but good even if it only improves highway MPG by a few percent or decreases NOX by only 10%.
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maxnix
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1995 Infiniti Q45t
2000 Infiniti Q45
Re: EGR compressed diaphram and, will not stall car (jamesmost)
When's the last time you cleaned your plenum?
Cleaning the EGR inlet on the plenum is just about impossible without removing the plenum.
Cleaning the EGR inlet on the plenum is just about impossible without removing the plenum.
Re: EGR compressed diaphram and, will not stall car (Q45tech)
Although I don't seem to have any issues I will also work on this eventually.Q45tech wrote:Every gasoline engine in US eventually gets a dirty egr system depending on the percentage of cruise vs idling and acceleration hours/miles.
My question is what are the effects of the EGR valve if I smash the gas at least once a day and usually cruise like a normal person?
I have the same issue that Jamesmost has. Its a problem that actually developed recently like in the last month.
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jamesmost
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Re: EGR compressed diaphram and, will not stall car (maxnix)
35k mi. ago, when installed jdm motor.my motor used to stall out completely when diaphram was compressed.maxnix wrote:When's the last time you cleaned your plenum?
Cleaning the EGR inlet on the plenum is just about impossible without removing the plenum.
what about my other symptoms ? related ?James
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maxnix
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1995 Infiniti Q45t
2000 Infiniti Q45
Re: EGR compressed diaphram and, will not stall car (jamesmost)
Watch you throttle body cable pulley/cam when someone abruptly releases throttle from 2500rpm. Is it slow to respond? Do you have enough slack in the adjustment?
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jamesmost
- Posts: 1963
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- Car: "95Qmodded, Benz wagon 4matic , 1986 MB 560sec
Re: EGR compressed diaphram and, will not stall car (maxnix)
will domaxnix wrote:Watch you throttle body cable pulley/cam when someone abruptly releases throttle from 2500rpm. Is it slow to respond? Do you have enough slack in the adjustment?