Engine won't start

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Check to make sure the fuel pressure is within spec. It could be a bad regulator. Also, yes an O2 sensor could cause this.
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Wednesday, December 18th, 2019 AT 10:03 AM (Merged)
Tiny
DBOLANOWSKI
  • MEMBER
  • 5 POSTS
  • 1997 CHEVROLET SUBURBAN
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 130,000 MILES
The engine will not start, it has good fuel pressure and it has spark. Engine will start with either.
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Wednesday, December 18th, 2019 AT 10:03 AM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check fuel pressure with a gauge auto parts rent it should be 60-66 psi
Here is a helpful link, www.2carpros. Com/articles/how-to-check-fuel-system-pressure-and-regulator
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Wednesday, December 18th, 2019 AT 10:03 AM (Merged)
Tiny
DBOLANOWSKI
  • MEMBER
  • 5 POSTS
That was the first step taken. The fuel psi is 65. It does have spark. I can get it to start with Ether then it dies out.
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Wednesday, December 18th, 2019 AT 10:03 AM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check to see if its a timing chain that jumped. Have checked fuses under hood?
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Wednesday, December 18th, 2019 AT 10:03 AM (Merged)
Tiny
DBOLANOWSKI
  • MEMBER
  • 5 POSTS
Timing already been checked. All fuses also checked. Note: the Initial problem was engine would not start because the fuel pump was bad. Changed pump/screen/ fuel filter. Now as good psi (65) good spark but still will not start. Starts Immediately With Ether and will continue to run if you keep spraying ether.
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Wednesday, December 18th, 2019 AT 10:03 AM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check to see if there is play in rotor. There should not be any and the gear may be worn on bottom of distributor. Check to see if the fuel injection spider is bad. On the earlier models it is recommended to replace them.
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Wednesday, December 18th, 2019 AT 10:03 AM (Merged)
Tiny
6XMOMMY
  • MEMBER
  • 1 POST
  • 1997 CHEVROLET SUBURBAN
1997 Chevy Suburban

We've had the car for about a year. About 2 months ago I was driving on the freeway and the car just stopped, I had about a quarter of a tank of gas, it started again I got more gas and no issues until now. While driving on the freeway again it stopped, and wont start back up. It turns over but its like no fuel is getting to it?
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Wednesday, December 18th, 2019 AT 10:03 AM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Ther may be a problem with the harness near the fuel pump. Some of the replacement pumps come with the harness so as not to do this again. Check your fuel pressure first though. It should be 40 p.S.I. Min. If you change the pump or that's the rproblem make sure to get the harness with it. It's about 12 " long.
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Wednesday, December 18th, 2019 AT 10:03 AM (Merged)
Tiny
DBOLANOWSKI
  • MEMBER
  • 5 POSTS
Is there a way to check the spider and also could all of the injectors gone bad where none of them will inject /spray fuel? Is there a way to manually force fuel through the injectors to unclog them? I had a buddy form work that this exact same thing happened and believe it or not, I replaced the Distributor rotor and it solved the problem. Not here in my case. This has me stumped
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Wednesday, December 18th, 2019 AT 10:03 AM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
There is a balance test to do this, but you need a special machine to do it. Check with a local mechanic to see if he has another way, but most of time they just replace the spider. Also if this is a pancake style cap make sure it is not the cheap one as it will not allow truck to start. Let me know how that works.
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Wednesday, December 18th, 2019 AT 10:04 AM (Merged)
Tiny
DBOLANOWSKI
  • MEMBER
  • 5 POSTS
Thank you for your helpful suggestions
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Wednesday, December 18th, 2019 AT 10:04 AM (Merged)
Tiny
MTDAVE134
  • MEMBER
  • 1 POST
  • 1997 CHEVROLET SUBURBAN
  • 130,000 MILES
My 97 454 Suburban won't start. Pulled spark plug and not getting spark when it turns over. Also no fuel pressure. Can't hear the fuel pump humming when I turn the key on. I'm pretty sure it's going to need a new fuel pump, but I'm stumped as to why I'm not getting spark when it turns over. Help?
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Wednesday, December 18th, 2019 AT 10:04 AM (Merged)
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
Does the fuel pump come on for 2 second prime when the key is first turned on?

Does the check engine light come on for bulb check when the key is turned to "ON"?
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Wednesday, December 18th, 2019 AT 10:04 AM (Merged)
Tiny
WFADELY
  • MEMBER
  • 2 POSTS
  • 1997 CHEVROLET SUBURBAN
I have a 1997 Suburban LT 4x4 w/109500 miles. I packed up the family to go to dinner but the Suburban would not start. It cranks very healthly but will not turn over. I suspected the fuel pump but when I turn the key to the "on" position I hear the "whirring" of the pump although it seems to be slightly louder than before. I replaced the fuel filter last year. If the fuel pump is "whirring" can it still be faulty? What else should I be looking at? Any suggestions would be greatly appreciated.
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Wednesday, December 18th, 2019 AT 10:04 AM (Merged)
Tiny
BOOTDOG
  • MECHANIC
  • 665 POSTS
Check to see if you have any spark. Pull the coil wire off the distibutor cap, stick a long flat head screwdriver in the wire. While holding the handle lay the screwdriver close to metal (i.E. A bracket) and have someone crank the engine over. If you don't see any spark then look into replacing the ingnition module or coil. Be careful with the spark test and don't get shocked. Good luck
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Wednesday, December 18th, 2019 AT 10:04 AM (Merged)
Tiny
GROMMET
  • MEMBER
  • 3 POSTS
  • 1997 CHEVROLET SUBURBAN
  • V8
  • 4WD
  • AUTOMATIC
  • 150,000 MILES
TEST YOUR KNOWLEDGE ON THIS ONE! I'm very grateful in advance, for when you reply back to me. I'm trying to fix it before I have to pay to tow it.

Here's the situation: Truck is all stock 454, LS, save the Flowmasters. 155K, all highway miles, a little towing by the first owner, I'm the second. Won't start.

I parked in the parking lot at Whole Paycheck (Foods) and when I came out, it wouldn't start. I had a new ICM and Coil so I put that in right then and there and it started back up. Drove fine for a couple hours. Since then, it has started and immediately died several times, or just drove fine, but after sitting wouldn't start. Sometimes it wouldn't start when it was cool, sometimes when it was hot. It also started cold and hot at other times. It also started a couple times, but promptly died. I have tried 2 new, good ICM's, and I believe the ACDelco one I pulled out initially is probably fine.

I have replaced: Fuel pump and sock (Delphi OEM), fuel filter BWD, fuel pump Relay BWD (works great in friend's 454) ICM and Coil, Borg Warner cap and rotor are 6 mos old. Plugs and wires are 6 months old, OEM NGK. Had been running like a champ up until this point. When I pour gas or starter fluid in the intake it fires right up for a moment, then dies

I pulled the fuse block out and checked the wires underneath to trace out to pump. They are intact and just fine. Power at the relay / fuse block. P

Threw the code "p1351" several times. Ignition control, open, and Ignition control, high voltage. Is this from the PCM, even though the ICM controls startup? Is the PCM Controlling whether the Fuel Pump starts up?

I replaced a 9 month old Delphi OEM FP with the same. The new fuel pump worked just fine for a while, but now will NOT start to save it's own skin. I have cleaned all contacts at the frame and double checked the ground. It's fine.

I only had a test light with me where it died, so I hooked it up at the mid-harness connector on the frame. The common is good beige-ish brown, and with a 12v tester wire from the battery it was solid. I drew a light spark / ark on the hot lead - black / white. On the middle wire which was purple (no purple wire at the relay) the test lamp lit up very weekly, like it only had about 5-6 volts. This was tested with Key On, Engine Off - Engine won't start.

I attempted to hotwire the pump to drive it home, but couldn't get it to operate. I didn't know the exact way to wire that, but I tried everything I could - I think.

Have you ever had this problem or what does it seem like to you?

Is there either a temp or oil sensor that would prevent the PCM from letting the FP run?

Would the code p1351 cause the PCM to keep the pump off?

I look forward to when you write back to me. Thank you.
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Wednesday, December 18th, 2019 AT 10:04 AM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Hi grommet, Welcome to 2carpros and TY for the donation

Lets do this 1st to rule out the fuel pump

I hope I understand it correctly too long-Okay lets deal with the fuel pump get a jumper wires-disconnect the fuel pump connector and power the gray wire from the battery positive post and battery negative post to the black and white and see what happens attempt to start vehicle-let me know
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Wednesday, December 18th, 2019 AT 10:04 AM (Merged)
Tiny
GROMMET
  • MEMBER
  • 3 POSTS
Hi Raz, I did just as you suggested, and the pump was a no go. I don't know if it's the pump or the harness / sending unit, so I'm going to replace the sending unit tomorrow and check the pump, but I'll check the pump first. If it's the pump, then it's really unfortunate that I ended up with 2 bad OEM pumps in such a short period of time.

Would this throw the p1351 code?
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Wednesday, December 18th, 2019 AT 10:04 AM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
The P1351 has to do with the ignition system unrelated to your problem
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Wednesday, December 18th, 2019 AT 10:04 AM (Merged)

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