Can EGR system cause acceleration hesitation?

Tiny
RANDYO35
  • MEMBER
  • TOYOTA CAMRY
I have a 1997 Toyota Camry 4 cyl. A/T about 130,000 miles. I pulled the engine and replaced the tranny. Engine starts up easily and can feel a little roughness at idles, but not major. The problem is the engine stumbles or hesitates on acceleration and seems to lack power but shifts through the gears fine. The computer tells me restricted flow to the EGR system. It is the only trouble code producing the CEL. My question is …. Can the EGR system malfunctioning cause the symptoms I have described? Or should I be focused on another process of elimination before the EGR like fuel lines, spark, tranny? I’m just trying to get an idea of the best plan of attack in this chicken or egg scenario.
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Monday, October 8th, 2007 AT 11:29 AM

2 Replies

Tiny
FISHERMAN
  • MEMBER
"Carbon deposits may cause the EGR valve to remain open at idle when it should be closed, depending on how far open the valve is, this will cause rough idling or even stalling"

Check your EGR if it has a carbon build-up
if so remove it and clean it,

that should solve your issues.

Let Us Know if that solve your problem!
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Monday, October 8th, 2007 AT 12:40 PM
Tiny
RANDYO35
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Both the egr valve and modulator passed the vacum test as described in the repair manual. I went ahead and took the valve off and cleaned with some carb. Cleaner. I'm not sure what would be restricting flow?
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Wednesday, October 10th, 2007 AT 9:41 AM

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