service engine soon

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Apr 24, 2011 | 10:32 AM

darairen.1

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Cruising

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service engine soon

hi all,

I have a 1988 c4 coupe and the "service engine soon" has luminated what do I have to check??? What do I do to extinguish this warning light???

The vehicle has been serviced recently.

regards Rod

Apr 24, 2011 | 03:37 PM

AGENT 86

Team Owner

Joined: Jan 2003

Posts: 20,293

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From: Summerland B.C. Canada

You need to see what trouble code is causing the SES to illuminate. Then you need to repair/replace the problem after doing some diagnostic testing.
Start by finding out what code is stored in the ECM, then post what number(s) you get.

Read this http://www.corvettephotographs.com/c4vettes/codes.htm

Apr 25, 2011 | 03:21 AM

darairen.1

Thread Starter

Cruising

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Hi agent 86,

The code was 15 coolant sensor low temp. Where do I look for that??
I'm in Australia and there is nowhere I can take the c4 to get it fixed.

Any Help is greatly appreciated.

Regards Rod

Apr 25, 2011 | 03:24 AM

rodj

Le Mans Master

Joined: Aug 2000

Posts: 8,838

Likes: 31

From: Australia

Quote:

Originally Posted by darairen.1

The code was 15 coolant sensor low temp. Where do I look for that??
I'm in Australia and there is nowhere I can take the c4 to get it fixed.

Check the wiring to the coolant temp sender (2 wire unit ) at front of intake under the TB
The one in the center; not the one on RHS with large brass hex nut

Last edited by rodj; Apr 25, 2011 at 03:27 AM.

Apr 25, 2011 | 07:57 AM

darairen.1

Thread Starter

Cruising

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Hi rodJ

thankyou i'll check it out.

regards rod

Apr 25, 2011 | 09:04 AM

AGENT 86

Team Owner

Joined: Jan 2003

Posts: 20,293

Likes: 240

From: Summerland B.C. Canada

http://members.shaw.ca/corvette86/Code%2015.pdf

Apr 25, 2011 | 10:24 AM

pmihaltian

Slingshot

Joined: Dec 2001

Posts: 3,817

Likes: 24

From: Charlotte NC

Read this write-up and follow the proper burping procedure complete with the weep holes in the thermostat and assuming that your low coolant sensor is good, you should solve your problem.

Attached Images

Corvette L98 Radiator Burp Procedure.pdf (72.8 KB, 143 views)

Apr 25, 2011 | 12:50 PM

AGENT 86

Team Owner

Joined: Jan 2003

Posts: 20,293

Likes: 240

From: Summerland B.C. Canada

Quote:

Originally Posted by pmihaltian

Read this write-up and follow the proper burping procedure complete with the weep holes in the thermostat and assuming that your low coolant sensor is good, you should solve your problem.

Wrong sensor, his problem stems for ECM coolant temp sensor.

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Apr 25, 2011 | 02:30 PM

pmihaltian

Slingshot

Joined: Dec 2001

Posts: 3,817

Likes: 24

From: Charlotte NC

Quote:

Originally Posted by AGENT 86

Wrong sensor, his problem stems for ECM coolant temp sensor.

Oh, your right, Dan. Someone once told me, "Those of us that can read have an advantage..." Sorry

Apr 25, 2011 | 03:17 PM

#10

AGENT 86

Team Owner

Joined: Jan 2003

Posts: 20,293

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From: Summerland B.C. Canada

Quote:

Originally Posted by pmihaltian

Oh, your right, Dan. Someone once told me, "Those of us that can read have an advantage..." Sorry

LOL

Apr 25, 2011 | 06:58 PM

#11

darairen.1

Thread Starter

Cruising

Joined: Mar 2011

Posts: 10

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Hi Agent 86

Thankyou for flow chart it was helpfull.

I've read as soon as engine cools down a bit i'll check connectors.

Thanks for your time and help.

regards Rod

Apr 25, 2011 | 08:29 PM

#12

darairen.1

Thread Starter

Cruising

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Hi All

Really appreciated all the help I received. As it turned out that sensor plug was disconnected an easy fix when you know how. I don't care what they say you Yanks that drive corvettes are ok by me lol.

Regards Rod

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