Question about 1998 Chevrolet S-10 Pickup

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Difficult to start, once started runs fine. fuel

Difficult to start, once started runs fine. fuel pressure seems to be fine. Doesn't want to start at all today. No codes on computer scan.

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  • its420_us May 11, 2010

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  • 208 Answers

Crank position senser going bad possibly

Posted on Jun 21, 2009

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Posted on Jan 02, 2017

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My 2002 ford explorer wont start in morning or when its cold but when warm it runs and starts fine fuel pressure valve only trickeling gas


The weather or outside temp are not the issue at all

The truck either works correctly or it doesn't

The valve on the engine is called a Schrader Valve
It is only to hook up a fuel pressure gauge

That is what you do next

It would seem from your description, that a check valve
in the fuel pump assy, inside the fuel tank is leaking.

It will start but takes time to build up pressure & then
drains back when the ignition & thus fuel pump are off

The fuel rail,the silver tubing that has you valve ,is not
staying pressurized.

Unfortunately you may have to drop the fuel tank to
remove the pump & replace a good pump just to get
the check valve that may have failed

So you want to watch the fuel pressure with a guage
or scan tool data if that is listed for your truck

If it won't hold or your not getting the better part of a
20 onces soda bottle full of fuel in 15 to 20 seconds,
then the volume is low also.

I will guess at the pressure you should see & say 38 to
42 lbs.

Sep 11, 2012 | 2002 Ford Explorer

1 Answer

I have a 1998 Plymouth neon that is hard to start. I hooked up a fuel pressure gauge. When you first turn on key pressure goes up from 0 to 2. If you cycle the key 3 or 4 times it will build pressure to...


It does sound like the fuel pump may have a problem, however, usually when they go out they completely fail and don't work at all.

I would recommend changing the fuel filter first, which is not too expensive. If that doesn't help, you probably will have to change out the pump.

Good luck!

Jul 13, 2011 | 1998 Plymouth Neon

1 Answer

1998 GMC Savana conversion van - It starts right up and immediately dies, repeatedly and randomly. Sometimes it won't start for days. Then poof, starts right up. It turns over fine, it starts fine. The...


It won't die when pulling the relay because it has another power path to the fuel pump through the oil pressure switch . Fuel Pump Electrical Circuits Description and Operation watch this video on fuel pump control , shows chrysler first , ford ,then gm . wait for gm an he explains the oil pressure switch . Plus when it won't start ,don't guess or theorize ! Test what's missing ? check for spark , no spark check ignition system , coil's , ignition module , crank sensor etc... has spark ,do a fuel pressure test etc... don't think computer , when it won't start does the check engine light come on with the key on run not start . If light is lit ,nothing wrong with the cumputer . If want to fix cars you really should take some automotive classes . Test don't guess .Watch some other videos crank no start videos etc...

Mar 02, 2017 | 1998 GMC Savana

2 Answers

Just changed fuel filter. Now having trouble starting. Then runs


What is the fuel pressure?. how many miles on the truck? has the pump been replaced before? one item to check first is the fuel pressure regulator. it may be under the engine cover on the drivers side. turn the eng off and remove the little vac line from the regulator. see if there is any fuel coming out of the nipple. if there is fuel, replace the fuel pressure regulator. it may take a while to leak fuel , but if it does, replace it.

Sep 18, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

Difficult starting in warm weather


Check the vacuum hose attached to the fuel pressure regulator under the hood next to your intake pull it off and see if any fuel is present, if there is replace regulator.you may have to tap hose with your finger to get any fuel out or start vehicle run until hot then shut off and recheck if no fuel present in vacuum line let me know and we can try something else.

Aug 23, 2009 | 1999 GMC Sierra

1 Answer

Engine cranks fine, good battery but just won't


check fuel pressure, try cycling the key to the on position an couple of times not the start position to cycle the fuel pump then try to start it. could be the cold start circuit. once its warm does it start easy ?

Aug 09, 2009 | 2008 Hyundai Elantra

1 Answer

Just replaced the fuel pump and fuel filter in my 1997 P- Voyager


Fuel Pump relay, Fuel Pressure Regulator may be faulty. A relay can be tested with multi-tester, and a pressure tester for regulator.

Jul 27, 2009 | 1997 Plymouth Voyager

1 Answer

1997 sunfire won`t start


are you getting continuous spark? bad electronic module? check spark first. should be continuous. do you have oil pressure...some vehicles won't run if oil pressure is not there.

Jul 12, 2009 | 1997 Pontiac Sunfire

1 Answer

93 ZJ 4.0L has intermittent fuel-pressure drop when starting


You have a good theory but haven't finished testing so you can verify it...check actual fuel delivery when in no-start...also probe the pump wire on the pump side of the harness and see if you are in fact not getting power to the pump all the time. (also in no-start). Don't test after it gets started, or testing will tell you what you already know...It runs fine once started...tests will then tell you it's fine (you know it's not) Problem itself could be anything from a bad connection somewhere to a balky pump.

Jul 06, 2009 | Jeep Grand Cherokee Cars & Trucks

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