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02-11-2007, 09:16 AM
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#1 |
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Registered User
Join Date: Dec 2006
Location: Fenton, MO
Posts: 10
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Truck wont start, Battery hooked up in reverse!!
A buddy of mine has a 90 suburban wont start now due to the fact he threw in a new battery and hooked up the wires in reverse. He said once he turned it over he saw smoke coming out of the alternator and then the truck went dead. He cant smell fuel, the engine rotates, there is no spark but all the lights, etc work. What all could he have fried as a result of this, what should we start to look for that might be behind the truck not starting?
Ive searched for this on the forums, but I cant find anything to help, and suggestions? |
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02-11-2007, 09:24 AM
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#2 |
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Registered User
Join Date: Jul 2006
Location: the netherlands europe
Posts: 4,335
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Re: Truck wond start, Battery hooked up in reverse!!
is there still spark?
reversing the polarity might be worse than you thing on a TPI truck
__________________
i got a job again and having fun at it too idea's for the trucks and the order of things to do are taking shape and get closer to being realized , a few more months and i be able to start building for real i complete 2 of the trucks intoo running fashion one custom and one basicly stock the thirth will be sacrificed for parts |
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02-11-2007, 10:13 AM
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#3 |
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Happy to be here
 
Join Date: Mar 2000
Location: Cypress, TX
Posts: 39,021
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Re: Truck wont start, Battery hooked up in reverse!!
Hopefully all he took out was a fusable link. If not he could have blown a module.
__________________
Follow me on Facebook and Instagram @N2trux.com Articles- "Jake" the 84 to 74 crewcab "Elwood" the77_Remix 85 GMC Sierra "Scarlett" "Refining Sierra" |
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02-11-2007, 12:10 PM
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#4 |
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Registered User
Join Date: Dec 2006
Location: Fenton, MO
Posts: 10
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Re: Truck wont start, Battery hooked up in reverse!!
the truck is a tbi, he said he checked the fuses but did not see anything. what module should we check on?
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02-11-2007, 01:39 PM
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#5 | |
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Registered User
Join Date: May 2004
Location: Minnesota
Posts: 4,621
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Re: Truck wont start, Battery hooked up in reverse!!
Is the owner prepared to spend the money it is going to take to repair this?
Quote:
It is possible that a fusible link is burned and no power is getting to the ignition system. If you find the module is bad, and replacing it gives you spark, the next think to test is: Does the fuel pump prime (run for a few seconds) when the key is first turn on? Do the injectors squirt fuel when the engine is cranking? We are looking for a destroyed ECM here. I'm assuming you understand the alternator is damaged. |
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