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I have 1989 chevy 1500 350 cid it will not start when cold. I have change the fuel pump and filter had the throttle body cleaned new plugs and wires

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  • 30 Answers

Take off the distributor cap, remove the rotor, there will be a small rectangular black module held in by two bolts( don't drop them). It has plugs on both sides, some two, three or even four. Take it to parts store and get a new one. This is usually the problem.

Posted on Feb 10, 2014

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  • 52 Answers

When you say cold how cold ? setting out all night ? Or on a very cold day or night ( 30 deg. )

Posted on Feb 10, 2014

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Posted on Jan 02, 2017

leetamara
  • 702 Answers

SOURCE: wont start

Make sure that you're getting spark. A very common thing on these engines are coils going bad. If you can verify spark, check to make sure you have an injector pulse. As you rotate the engine, look inside of the throttle body and make sure that you see fuel pulsing into the engine. You can still have good pressure but you don't have an injector pulse, the fuel still cant get into the engine. You can use a test light as well to test for an injector pulse. One wire going to the injector will have constant power and the other will blink when the engie is rolled over. Does it start if you spray starting fluid into the throttle body? If it does, it's a fuel delivery problem. Again be sure you have spark from coil to distributor and plugs. You can remove the ignition module and take it to NAPA and they have a module tester. Have them test the module several times not just once. This will eliminate the possibilites of an intermitted problem. Let me know how it does. tiqautoperformance@live.com

Posted on Aug 21, 2008

rockitman187
  • 2559 Answers

SOURCE: rough idle

Check or replace the EGR

Posted on May 27, 2009

csmock132
  • 4669 Answers

SOURCE: 1989 GMC 2500 5.7L - engine surges and stalls at idle. Loses power at cruising speed.

Wow you have replaced a lot of stuff. Lets go back to the Fuel pump. When you replaced it did you replace the hose between the pump and the sending unit. These are common for splitting. Have you hooked up a fuel pressure gauge to check what pressure you have? It should be real close to 13 psi and should raise to at least 18 or 19 when you pinch off the return line.

Posted on Jun 02, 2009

  • 7353 Answers

SOURCE: OBD code P04001 Insufficient flow, I changed the

did you clean the EGR passages? take the valve back off. one hole will have exhaust, the other should have strong vacuum.ususally the passage gets plugged with carbon, from the valve to where it goes into the intake manifold. you may take a wire and carb cleaner to clean the passage.

Posted on Oct 20, 2009

  • 13 Answers

SOURCE: truck cranks but won't start

I just a very similar issue with my 1997 Chevy K1500. I changed all of the fuel components and the issue turned out to be the two prong thermostat sensor on the front of the engine. If your car will start by pressing the gas pedal all the way to floor then the issue most likely is the same. A code engine reading from that sensor will cause the vehicle to not shift into overdrive, degrade gas mileage, and make the truck hard to start when the engine is warm. If it isn't starting when cold check the fuel pressure at the injectors turn the key on and the pressure should go to about 65 psi and when you turn the key off the pressure should hold to about 60 psi.

Posted on Nov 17, 2009

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2 Answers

1989 Chevy Suburban K1500 5.7 wont start. New fuel pump, inline filter, coil,plugs,cap n rotor,battery


You hear the new fuel pump kick on correct? While someone is cranking can you verify spark?

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Forgetting all you have done & why

What is or was the main issue & when did it start
& under what conditions ?

Does the thermostat open ?
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Sounds like you were going to say it only has a problem
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SO- none of what you did appears to be related

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Can you even drive it at all?

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1989 truck stalls when hot.


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