Codes P1640, and P1406 and little boost

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Mar 6, 2006 | 12:10 PM

#11

egladman

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yes I do have a series one. It'* a 94. And yes I have cleared the codes

Mar 6, 2006 | 12:33 PM

#12

egladman

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ok I'm finally getting some boost. NOw the problem seems that it bogs down at wide open throttle and when I back off it runs great. I cleared the egr code but i'm still wondeirng if it'* the egr valve?

Mar 6, 2006 | 12:49 PM

#13

LakevilleSSEi

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About what RPM range is it bogging down at?

Mar 6, 2006 | 12:53 PM

#14

egladman

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not really RPM related boging. It'* more dependant on how far the throttle is opening.

Mar 6, 2006 | 01:15 PM

#15

BillBoost37

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Quote:

Originally Posted by LakevilleSSEi

About what RPM range is it bogging down at?

I bet Nate is thinking older possibly dead catalytic converter.

Mar 6, 2006 | 01:18 PM

#16

LakevilleSSEi

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Quote:

Originally Posted by BillBoost37

Quote:

Originally Posted by LakevilleSSEi

About what RPM range is it bogging down at?

I bet Nate is thinking older possibly dead catalytic converter.

Or Fuel Pump.

Mar 6, 2006 | 04:44 PM

#17

egladman

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cats not the problem. I tested fuel pressure today and I'm only getting 30-35lbs. So i'm thinking my pump is dying.

Mar 6, 2006 | 06:31 PM

#18

willwren

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It'* about time on the pump. Let'* get a key on/ignition off check, then idle, then idle with the vac line pulled off the regulator.

My 93 already has a new one, and my 95 is due.

Mar 6, 2006 | 07:30 PM

#19

egladman

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The key on key off pressure was low also. I can't remember the exact number. So what replacement pump should I go with. I'm planning on modding this motor eventually so I'll want the best pump.