Question about Chevrolet Suburban 1500

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1996 chevy suburban runs bad has new fuel pump, fuel filter,plugs wires cap rotor fuel regulator coolant temp sensor cleaned maf reman engine with 40k on it

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Check if the spiders are bad... I May be off a year with application but if the spider was never replaced you are due. spider is the part that plugs into manifold to each intake runner for fuel injection, The plastic tubes get brittle and start to dribble. when one or more brake you get raw fuel not atomized fuel.

Posted on Nov 10, 2013

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Posted on Jan 02, 2017

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SOURCE: 95 chevy truck 4.3 motor has like a miss in high gear after warms

The fault could be in the ingnition module in the dist.I had a car one time that did the same thing but when it was cold,try replacing the the ignition module.

Posted on Jan 02, 2009

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SOURCE: 90 k1500 tbi no fuel from injectors

from the sounds of it its going to be one of 3 things 1) the injector is bad or 2) there is no power getting to the injector 3) bad relay switch.

1) to find out if the injector is good. pull the injector out and with some wire ground one side and touch the other side to your battery, every time you tap the wire to the bat you should here the injector click..

2) if injector is good get a test light and test to see if power is coming out of the wires that go to injector( on some vehicles you have to have the motor turning over befor power is sent through wire, so have someone turn the key while you check the wires with test light)

Posted on Aug 15, 2009

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SOURCE: running rough, spark plugs, distributor cap, rotor

First thing you need to know is which cylinders are missing. Then, don't forget there is an engine beneath the electronics. Do a quick test with a vacuum gauge and do a compression test. Check the distributor shaft for side play. If everything checks out good, then do electronic component testing. have a code check run (many parts stores do this free) and get a chiltons or haynes manual and follow test procedures in there.
I refrain from giving repair suggestions with problems like yours because people keep changing instead of testing parts. When I work on my vehicles or other peoples cars, I do testing to avoid buying expensive parts that most times won't correct the problem. At this point the most I'd suggest is to clean the mass air flow sensor wires with a Q-tip and carb cleaner...that often helps and is free. If you run into a problem with whatever you find, ask and I'll try to help.
good luck

Posted on Oct 05, 2009

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SOURCE: 1996 GMC Sierra 1500 XC 4x4 5.7 Hard To Start

It is probably the fuel pump. If I remember the number correctly, this fuel system needs about 50 lbs to open a valve.
Until this valve opens, no fuel gets to the fuel nozzels.

Posted on Apr 30, 2010

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SOURCE: I have a 1997 Mitsubishi Galant with rough idle

I am having the same issue on Mitsubishi Galant 02. Clattering on acceleration, herky jerky idle. Pulled a code multiple cylinder misfire. My mechanic's diagnosis is bad valve cover gasket causing oil to seap into the spark plugs and bad timing belt, which I have not replaced at 150k miles. I do however know my fuel injectors do need cleaning, he hasn't ruled that out either. Have you pulled any code on it? I have read on engine knock sensor going out on some of these also. Hope this helps some.

Posted on Oct 22, 2010

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1996 chevy suburban run bad ive replaced fuel pump fuel filter fuel regulator coolant temp sensor plugs wires cap rotor timing is correct cleaned maf has reman engine w/40k on it

There are many things that can cause a vehicle to run bad and it looks like you've tackled a large portion of them. I'll just add a few more items to check to help with solving it.

First thing I would do is, with the engine running, listen for any vacuum leaks. It will be an audible hiss that, if large enough to cause poor operation, will be easily heard over the sound of the engine. Using a piece of rubber hose with one end to your ear and the other end pointing at various components of the engine can really be helpful in pinpointing the exact location of the vacuum leak. If found, repairing this will improve engine performance, regardless of whether it solves your current issue or not.

Next, oxygen sensor(s) are a prime suspect. If you can, hooking up a scan tool, you can see if there are any codes. A scan tool that can graph the voltage of the upstream O2 sensor can let you know if the sensor is working or not. It should go up and down once or twice a second, with voltage readings between around 0.1-0.2 up to 0.8-0.9 . If it isn't varying around at all, then it will need replacement.

After that, testing the Idle Air Control Valve (IACV) is what you want to look at doing. It's simple to inspect, test, and replace. First, remove it check the pintle for excessive carbon build up. Clean it off with carb cleaner. Next, you need to perform an ohms test. With the connector unplugged, perform the following tests:
Measure resistance between terminals A and B.
Measure resistance between terminals C and D.
-These two readings should be between 20-80 ohms. If not, replace.
Measure resistance between B and C.
Measure resistance between A and D.
-If not infinite resistance, replace.
Here's a wire diagram for the IACV.0996b43f80219b22.gif
Next, remove the EGR valve to see if it's dirty. If so, clean it. If it is bad, it would most likely have an engine code associated with it, and a dirty EGR is a more likely culprit.

Next, test the Manifold Absolute Pressure (MAP) sensor. You'll need an volt meter for this one. With key ON engine OFF, back probe (as in, keep it connected to the sensor and probe the connect/wires) terminals A and C. You should get the 5 volt reference signal. If not, the wiring or the ECM is bad. Now probe between A and B. With engine off, it should read about .5 volts at sea level. Now turn the engine on. At idle it should read ~1.5 volts and it should read ~4.5 volts at wide open throttle. If not, inspect for vacuum leaks or replace the sensor.

That should pretty well cover the water front for possible solutions to your poor running engine. Hope that helps.

Oct 13, 2013 | Cars & Trucks

1 Answer

Won't start in Cold weather in Warm Weather it's fine

without actually hooking up a scan tool and looking at the pid data i would say you have either a coolant temp sensor issue or intake air temp sensor issue.i have seen alot more coolant temp sensors bad than the intake air temp sensors tho.

Feb 17, 2013 | 1996 Jeep Grand Cherokee

1 Answer

Cause of gasoline flooding in the engine

Here are some causes.

-No Spark
-Bad fuel injector
-bad temp sensor
-faulty MAF sensor
-grounded injector control wire
-to much fuel pressure
-leaking fuel pressure regulator
-bad computer.
-worn out spark plugs
-bad coil, cap, rotor, or wires.

a year, make, model, and engine size will help!

Feb 14, 2012 | Cars & Trucks

1 Answer

I have a 99 chevy 2500 van with 5.7 engine.I put new fuel pump,new fuel filter,new fuel pressure regulator,new plugs and wires,new crank shaft sensor,cleaned injectors and throttle body.When I first start...

you forgot the coolant temp sensor, this regulates how much fuel it needs according to temp outside, it can be read with a scan tool, it costs approx 20.00 and make sure they sell you the right one,you don't want the temp sender....You want coolant temp sensor ! In layman terms it's like a choke...more fuel when cold and less fuel when warm.

Jan 18, 2012 | Chevrolet Express Cargo Cars & Trucks

1 Answer

Gmc suburban 1996 V8 vortec engine,delayed starting after 1hr. took 15 seconds of continous starting before engine run.once the engine run i put it off and start it again,it took only 1 second....

Check for fuel presser bleed down, does the fuel presser hold after you shut it off? or does it fall off? if so check for bad pulsar valve or bad injector ect.

Oct 28, 2011 | Cars & Trucks

3 Answers

Driving 60mph power drops as though out of gas. Coast 2-300 yds pump gas pedal van back to normal. Now at home it starts then stalls, will only run 5-10 seconds. New plugs&wires distributor cap and...

signs of a bad fuel pressure regulator. the vehicle runs rough, the engine will not start usually in the mornings. many times engine starts but stalls shortly after starting. a bad regulator can result in fouled plugs. black soot on plugs, blake smoke from tailpipe, running rough, stalling. you could have residue in fuel tank and need to change fuel filter again. have a very good day !!

Mar 09, 2011 | Volkswagen Eurovan Cars & Trucks

1 Answer

1996 chevy k1500 misses at idle and backfires while driving when you let off of gas. Changed plugs, wires, cap, rotor button.

Try cleaning your MAF sensor, and check your IAT (intake air temperature). A dirty MAF sensor can cause your engine to run lean and a faulty IAT can throw off your ECM's program causing a conflict to your timing and fuel injection pulse.

Thank you for using Fixya and good luck.

Apr 01, 2010 | 1996 Chevrolet K1500

1 Answer

My suburban stalls and sputters out after running for about 15 minutes. I have replaced all the O2 sensors, plugs, wires, crank sensor, oil change, fuel filter, cap and rotor. What else could be the...

need to check the fuel pressure.and if its blowing black smoke,the fuel pressure regulator is bad.the fuel pressure should be around 65 pounds.

Mar 27, 2010 | 1999 GMC Suburban

2 Answers

Engine cough

Go to Auto Zone and have the Suburban scanned for DTC codes, Auto Zone scan for free and most Auto shop will do it for $10.00 to $20.00 since they want your business cause they know most large Auto Parts store scan for free.
It sounds like you have a miss fire which can be caused by and O2 sensor or dirty MAF sensor which can be cleaned or time to replace the rotor and cap, plug wire and spark plugs.
Note that the distributor cap and rotor is made of plastic and is know to crack do to time and heat. There is also a rubber valve or screen at the bottom of the distributor that get's dirty and the inside of the distributor collects with condesation and corrode the rotor and caps too.
Good luck and hope this helps, Get it scanned and see if it's a sensor that is causing the miss fire on the hightway. If not then replace the cap and rotor and clean out the distributor if needed. Inspect the plug wire and replace if needed and change the plugs.

Keep me posted. be glad to help you out.

May 28, 2009 | 1996 Chevrolet Suburban

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