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Jun 1, 2009 | 04:17 PM

Bartman51

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From: Pomona New York

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I'm a new vette owner, i just picked up a a 1986 coupe with 78,000 miles.
it has been sitting for some time and I have changed the fluid's plugs wires cap, fuel filter. and has not started it turns over and starts when you pour fuel into the throttle body. after reading the forums I'm going to now replace the ECM. I dont have a code reader and would like to know what codes are in the computer, any help and suggestions would be greatly appreciated .

Pics to follow

Jun 1, 2009 | 04:30 PM

nutz4c4

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From: WAY UPSTATE NY

You should first purchase the FSM to be able to trouble shoot it. Why is it you are going to replace the ECM?
Do not start throwing parts at it. Use a paper clip to read the codes if there are any. Use the advanced seach funtion for more info on the paer clip method
Perhaps Agent 86 will happen upon this and post a link for you

Jun 1, 2009 | 04:35 PM

Bartman51

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From: Pomona New York

not to sound stupid but, i have no idea why to replace the ECM. Thanks for the Info.

Jun 1, 2009 | 04:42 PM

Team Owner

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From: Phila., PA burbs

Get one of these:

Then read this:

http://www.corvettephotographs.com/c4vettes/ecm.htm

Jun 1, 2009 | 05:04 PM

nutz4c4

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From: WAY UPSTATE NY

Why are you set on replacing the ECM? You say it starts if you give it fuel.Sounds more like a fuel delivery problem.Do you have fuel pressure at the rail? Are the injectors firing?

Last edited by nutz4c4; Jun 1, 2009 at 05:12 PM.

Jun 1, 2009 | 05:30 PM

Muffin

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From: Merritt Ils Fl

Can you hear the fuel pump run when you turn the key to RUN. That's the first ignition switch position. You should hear the pump for 2-3 seconds. If not check your Fuel pump fuse. Check this and get back to us.

Jun 1, 2009 | 06:31 PM

Bartman51

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From: Pomona New York

Im not set on replacing the ECM, I dont want to replace some thing that still works. I will try the paper clip and let you all know how i made out.

Jun 1, 2009 | 06:40 PM

CorvetteMike2024

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Hey, Welcome. You have a nice year vette. When you get it going, your going to like it

Lots of nice folks that will share their knowlage with you

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Jun 2, 2009 | 07:54 AM

AGENT 86

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From: Summerland B.C. Canada

Welcome Aboard

Save these to your hard drive. As stated by some nut, sounds like a fuel delivery problem.

http://members.shaw.ca/corvette86/Co...0View%2086.pdf

http://members.shaw.ca/corvette86/6E3-B%20Symptoms.pdf

http://members.shaw.ca/corvette86/En...ButWontRun.pdf

http://members.shaw.ca/corvette86/Fu...l%20System.pdf

http://members.shaw.ca/corvette86/Fu...mDiagnosis.pdf

http://members.shaw.ca/corvette86/No...it%20Check.pdf

http://members.shaw.ca/corvette86/Ig...System-EST.pdf

Jun 2, 2009 | 11:16 AM

#10

Bartman51

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From: Pomona New York

Thanks Guys, I will update the status this after noon, glad to be aboard....

Jun 2, 2009 | 03:45 PM

#11

nutz4c4

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From: WAY UPSTATE NY

Quote:

Originally Posted by AGENT 86

Welcome Aboard

Save these to your hard drive. As stated by some nut, sounds like a fuel delivery problem.

Jun 2, 2009 | 08:51 PM

#12

AGENT 86

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From: Summerland B.C. Canada

Quote:

Originally Posted by nutz4c4

Jun 2, 2009 | 09:00 PM

#13

ant-knee470

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From: Davie Florida

How long the car sit for?

Fuel sending unit maybe sitting on the bottom of the tank,
Maybe the fuel pump relay took a dump,

First check to see if the fuel pump is running.
If not maybe its not getting power..

The problem is in the fuel system..

Ant....

Jun 2, 2009 | 10:30 PM

#14

Bartman51

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From: Pomona New York

My brother in law with out my knowledge took the wires off the cap and block and rewired he believes that the passenger side goes 1-3-5-7 from front to back 2-4-6-8 from front to back. little help with that, and i hear the fuel pump click on for a second and also smell fuel when i crank the motor. that's all i got so far.
bummed out right now, but thanks for the help guys.

Jun 3, 2009 | 08:36 AM

#15

AGENT 86

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From: Summerland B.C. Canada

Quote:

Originally Posted by Bartman51

My brother in law with out my knowledge took the wires off the cap and block and rewired he believes that the passenger side goes 1-3-5-7 from front to back 2-4-6-8 from front to back .

This ain't no Ford

http://members.shaw.ca/agent86/Spark...g%20Wiring.pdf

Jun 3, 2009 | 08:44 AM

#16

Bartman51

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From: Pomona New York

I figured that, fixed the plugs but no start, motor turns over and smell gas when cranking. Thoughts

Jun 3, 2009 | 08:52 AM

#17

AGENT 86

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From: Summerland B.C. Canada

You need a fuel pressure gauge to diagnose fuel delivery problems. Do you have one ??

Jun 3, 2009 | 09:59 AM

#18

Bartman51

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From: Pomona New York

No I don't have a pressure gauge what else could I do??

Jun 3, 2009 | 10:14 AM

#19

AGENT 86

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From: Summerland B.C. Canada

Buy, rent, or borrow a gauge. You first need to know if you have sufficient fuel pressure, to allow it to run. Then your going to have to see if the injectors are actually trying to inject. A noid light is required to test the injector signal.
http://members.shaw.ca/corvette86/Fu...mDiagnosis.pdf

Jun 3, 2009 | 07:04 PM

#20

Bartman51

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From: Pomona New York

i didnt get a pressure gauge yet, but the car ran today for about 1min with the help of little starter fluid, when I hit the gas very little it bogged out and that was it. the low coolant light is on and the ABS light flashes 3 times and then turns off. Also the volts display is red next to the numbers if that means anything. also the shrader valve didnt have pressure after i cranked the motor

Last edited by Bartman51; Jun 3, 2009 at 08:21 PM. Reason: forgot something

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