73-87chevytrucks.com

General Site Info => General Discussion => Topic started by: Tazman on July 17, 2017, 05:37:48 pm

Title: Can I ask?
Post by: Tazman on July 17, 2017, 05:37:48 pm

I am getting used to driving my b92 GMC but it will never replace my 87.It drives nice, sounds great,and the air works super which important this time of year.
Now it has its fuel pump in the tank as the 87 did but I do not hear it start when I turn the key, is that normal? I have also been told that these 305's had an issue with the manifold gaskets failing much earlier than usual, anyone know if this is true?

Thanks,

Title: Re: Can I ask?
Post by: Irish_Alley on July 18, 2017, 02:33:24 pm

its pretty much the same setup. you should hear the pump prime when the key is first turned "on". if not the fuel pump relay could be bad, on a cold startup does it take 5 or so seconds of the engine turning to start?

Title: Re: Can I ask?
Post by: AZ4X4SQBDY on July 18, 2017, 06:44:10 pm

I remember some of the OEM fuel pump assemblies having one of these and the replacements not having it

http://www.rockauto.com/en/moreinfo.php?pk=6436689&cc=1059825&jsn=580

They said it's the same from 87-92. What it does is cuts the noise down from the pump.

Title: Re: Can I ask?
Post by: Tazman on July 18, 2017, 08:12:39 pm

Quote from: Irish_Alley on July 18, 2017, 02:33:24 pm

its pretty much the same setup. you should hear the pump prime when the key is first turned "on". if not the fuel pump relay could be bad, on a cold startup does it take 5 or so seconds of the engine turning to start?

No it starts just fine but it does not like to go 25 mph till its warmed up. It can stumble but never dies.

Title: Re: Can I ask?
Post by: Irish_Alley on July 18, 2017, 09:39:00 pm

seams like you have a few issues

is your check engine light on?
does it come on when you turn the key "on"
how to retrieve OBD codes (http://forum.73-87chevytrucks.com/smforum/index.php?topic=29949.0)

how to test TBI sensors (http://forum.73-87chevytrucks.com/smforum/index.php?topic=29996.0)

Title: Re: Can I ask?
Post by: AZ4X4SQBDY on July 18, 2017, 09:53:44 pm

Meter the coolant temperature sensor, make sure the ecu is getting the right reading. This may not set a lamp.

Title: Re: Can I ask?
Post by: Tazman on July 19, 2017, 07:03:20 pm

Quote from: Irish_Alley on July 18, 2017, 09:39:00 pm

seams like you have a few issues

is your check engine light on?
does it come on when you turn the key "on"
how to retrieve OBD codes (http://forum.73-87chevytrucks.com/smforum/index.php?topic=29949.0)

how to test TBI sensors (http://forum.73-87chevytrucks.com/smforum/index.php?topic=29996.0)

No lights, no codes

Title: Re: Can I ask?
Post by: Captkaos on July 19, 2017, 07:12:36 pm

The 87-93 TBI motors were pretty much the same.