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Discussion Starter · #1 ·
Hey members,
I have a 89 turbo auto that is bone stock. I need it to pass smog. Codes are 34 and 71. Abnormal turbo pressure and EGR temp sensor (calif). I removed the EGR and tested the temp sensor as per the manual. It is OK. Checked the VSV and vacumn modulator. Both OK. The EGR isn't carboned up and the diaphram works. Could a boost leak account for both codes? The 3000 pipe had a semiloose clamp but it was seated good. I'm going to reassemble it this weekend and clear the codes. Any ideas?
 

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Discussion Starter · #3 ·
Thanks Jeeves
I guess I'm on the long list of 2nd owners that are repairing the abused/neglected of the previous owners. I should of tried reseting the ECU before I took it apart.Need to keep the EGR as I'm in Northern Cal. Thats 200 miles north of SF. Land of the redwoods and that funny smelling weed. The EGR system checked OK even ohming the wires back to the ECU. I'm checking for cracked pipes /boost leaks ,IC ect. BTW the Power Steering is repaired(previous post) The pump was burned up from lack of oil but the origional problem was that I found the pumps flow control valve wedged down by the block.
 

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Discussion Starter · #5 ·
Thx. Codes are erased.I found a blockage in the EGR. The little metal pipe that comes out of the EGR was carboned up. Boy the EGR is a PITA to remove/install with the motor in. Should be good to go now but I need to wait till after the holiday for insurance for road testing. Theses cars really drain the pocketbook. I fixed alot of the oil leaks and replaced 3/4's of the coolant lines. There is an electric fan wiretied to the radiator. Shrouds and fan assembly have been removed. No bottom inspection plate. All soon to be replaced. It's a labor of love though and gets my mind off of my divorce/holiday blues.I've been looking at the K &N filters on Ebay. I'm not fond of one size fits all. Maybe one from 935, also thinking of the cooleese hardpipes?
 
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