Service Engine Soon Light

416 Views 16 Replies 1 Participant Last post by Guest, Jul 13, 2001

Discussion Starter · Jul 5, 2001

The saga continues. I have had a service engine soon light ever since I put my new Hotshot header on. I had to re-tap the O2 sensor, I thought that would fix it. It didn't. I brought it to the dealer, and he ran the codes. He said it was EGR, and that there wasn't enough flow through the EGR tube to open the valve up all the way. So, I checked my EGR fitting, and it was on all the way (not cross threaded or anything.) So, the car idles rough, and I can't seem to fix it.

Any ideas?

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1999 SE Limited: JWT POP, NGK Wires, OBX Muffler 2.25" exhaust, Hotshot header, Eibach Sportlines, KYB AGX, 17 deg. timing
http://post.uwstout.edu/l/lilienthala/car.html

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jacen99SE

· #2 · Jul 6, 2001

First, did you re-tighten the EGR tube in the REAR?
That's the easy thing to check.
Also, just try removing the EGR tube and cleaning it.

WHile you have it removed, try and look into the EGR port on the header. Is it blocked by anyting?

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jacen99SE

· #3 · Jul 6, 2001

What is the actual code?
I'll look it up in my FSM

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jacen99SE

· #5 · Jul 7, 2001

How cand I check the codes myself?

1. Remove the ecu from behind the radio. On the back there is a hole covered by a clear piece of plastic. Remove the plastic.

2. Put the key in the ignition and turn it to ON but do not start the car.

3. Use a regular screwdriver bit to turn the thing on the back of the ecu. Turn it until it stops, don't force it. Wait 5 seconds, then turn it back.

4. Record the codes (flashes of the check engine light)

Repeat 3 to clear the code.

Post it and we can tell you what it means.

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jacen99SE

· #9 · Jul 11, 2001

WHile you have it removed, try and look into the EGR port on the header. Is it blocked by anyting?

Did you do this step?

I'll look through the FSM tonight for there recommendations to check based on the code you gave.

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jacen99SE

· #10 · Jul 11, 2001

The FSM says:
EGR flow is detected under conditon that does not call for EGR
Check Items:
EGRC-solenoid valve
EGR valve leaking or stuck open
EGR temperature sensor
EGRC-BPT valve

Did the dealer check all these?
If you want to check them , I can scan the pages and email them to you.

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jacen99SE

· #12 · Jul 11, 2001

The mechanic said that the valve was stuck open

Then they should repair or replace it.

that it wasn't heating up enough to open it up

That contradicts what you said above.
If so, they should test the EGR temperature sensor.

I'll try and scan the pages tomorrow.

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jacen99SE

· #14 · Jul 12, 2001

patience, young Skywalker. I will send you the FSM pages today. How much room do you have in your email account? The pages are scanned as pictures so they are kinda big.

It would be easier for me to fax them. Do you have access to a fax? Or are you near a kinko's I could fax them to? Kinko's will charge you, but an EGR valve is over $100 I think.

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jacen99SE

· #15 · Jul 12, 2001

No, I didn't take the whole tube off. How do you get at it? It is so far back there!

Use two extensions and a swivel adapter on a socket. It helps to have a friend hold a flashlight.

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jacen99SE

· #16 · Jul 12, 2001

you have mail.

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