GP won't stay running

[Aircal]

Came out form working out tonight and turned the GP over. It died right way. Would crank and start but only run for less than a second before dieing? Any thoughts on just a lame descrption like that?

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[slowchevy]

Could be a few things, mine did that and it turned our to be a failed cam position sensor

 

[Aircal]

Could be a few things, mine did that and it turned our to be a failed cam position sensor

I had a code for that last month. Took it in they told me it was corodided and worked fine once they cleaned it.

 

[Turbocharged400sbc]

fuel pump resister bypassed already? if not thats a possibility

 

[Aircal]

No, havnt done that either. Also what i thought might be the problem.

 

[Turbocharged400sbc]

bend one of the primary circuit tabs on the fp relay number 85 or 86 doesnt matter but i believe its 85 that you can bend and it just points at the bolt tower for the power distribution block cover plastic bolt.
the other one would go under a relay next to it, no big deal you can just clip it off too.
all your looking to do is leave the relay in the NC position which is high speed, the pcm turns on the relay when it passes fp power through the resistor for low speed.

 

[Aircal]

So both of you where right it looks like. Shop said the crank postion sensor was throwing a code. And the fuel pump was bad. I got a voice mail so didn't talk to them bet its the resister.

 

[Turbocharged400sbc]

mod the resister/low speed relay and have em clear the crank code, the crank code can be triggered falsely, ive seen it plenty of times unless the belt chewed the icm/cam/crank sens harness ive seldon seen a crank sens fail

 

[slowchevy]

:likes:

 

[Aircal]

mod the resister/low speed relay and have em clear the crank code, the crank code can be triggered falsely, ive seen it plenty of times unless the belt chewed the icm/cam/crank sens harness ive seldon seen a crank sens fail

For a few months when driving on the highway I would get a little bump in rpm's and the tach would shut down. And would work fine once restarted. Sometimes I would get a code, took it to pepboys and they read a cps code. But before I got it to the shop it had cleared. So they had checked the sensor, said it was just corroded so they cleaned and put it back in.

 

[Turbocharged400sbc]

i find that as these cars get older terminal clamping gets weaker esp if connectors are wiggled excessivly
check the connector going to your icm you may have to use a small sewing needle to bend the arched contact pad outward and make sure you got a good connection.

just ask angel, a simple terminal rebend fixed an issue he assumed was a ckps issue that woulda cost alot to fix.

a cps code can trigger at ANY point that some otehr system causes the engine to die (e.g. bad fuel pump) icm failure, hell even a tcc stuck on can cause the ckp sensor codes to trip.

one of the first things in any flowchart is to clear and retest to confirm

 

[Aircal]

Turned out to be the fuel pump was done for.
Should the bypass be done on a 2000 Buick Regal ?

 

[Turbocharged400sbc]

onb a 2000 i believe you have a PWM pump controller...i wouldnt worry about it if it does

 

[Fish]

FWIW, easy way to bypass the resistor.

I had the Caspers rewire kit on my Regal, which pretty much bypasses the resistor.

 

[Aircal]

FWIW, easy way to bypass the resistor.

I had the Caspers rewire kit on my Regal, which pretty much bypasses the resistor.

So should I bend the tab on his 2000 Regal non-supercharged ?

I am going to go ahead and change out fuel filter today.

 

[Aircal]

Different set up in his. The number 18 relay f/pmp spd cont is actually blank.

 

[Aircal]

 

[Turbocharged400sbc]

the PWM unit has a speed control line from the pcm

 

[Aircal]

probably should start a new thread, but changed out his fuel filter. Still died out after ideling for like 10 minutes. I thinking fuel pump then?