Question about 1998 Chevrolet Cavalier

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Cranks but no start. Computer shows code U1016, no PCM communication. The fuel system seems to prime and build pressure. It seems to have no fire.

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I'm having the exact same issue. Did you ever figure out the problem?

Posted on Mar 28, 2015

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Posted on Jan 02, 2017

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84 Chevy cleberty after it sits for a day it will not crank unless I put some gas in the Tb thin it cranks and runs fine it has fire and fuel injector is spraying


Check valve inside fuel pump is bad , need new fuel pump . The check valve is suppose to keep pressure in fuel lines . Try turning the ignition on - off a few times ,to build up pressure . The PCM/ECM engine computer energizes the fuel pump relay for two seconds when key is turned on to prime the fuel system .

Oct 05, 2017 | Cars & Trucks

1 Answer

CODES U1016 & U1055 1999 S-10 2.2


U1016
Loss of Communications with PCM
U1055
Loss of Serial Communications for Class 2 Devices
This is going to require special testing with a GM scanner, it is not a do it yourself repair. My guess is this you have a defective instrument cluster display

Jul 07, 2016 | Chevrolet S 10 Cars & Trucks

2 Answers

When i turn the key the engine cranks over but does not start, if i continue to crank it for a minute or two then it will eventually start and drive just fine. any ideas?


This sounds like a fuel system priming issue. When you first turn the key to the ON position (not cranking yet), you should hear a three-to-five second buzzing noise. This is the fuel pump running to pressurize the fuel system for cranking. This is controlled by the PCM and is relay activated. Once the vehicle starts and oil pressure rises, then the fuel pump is activated by the PCM via a different relay. If you can't start at first, what is probably happening is that the prime is not occurring and you have to crank it until the PCM sees oil pressure and then fires off the fuel pump. It could be PCM wiring or a bad fuel pump prime relay.

Oct 02, 2015 | Cars & Trucks

1 Answer

My 1998 gmc snonma votec wont start it cranks and cranks and after about 20 mins it starts after that i can shout it off and it will fire back up fine then a day will go by and it dose the same thing


You have to check the fuel pump pressure to make sure it is supplying sufficient fuel pressure..Try turning the switch to on but do not start..now listen for the fuel pump to prime the system..it should run for 4-5 seconds the shut off..now try and start..if it is fully primed it should start...note although you are getting some gas dosent mean the pump is ok...sometimes it starts to go bad and then all at once it will let you down for good...have it checked out..good luck

Oct 22, 2014 | 1998 GMC Sonoma

1 Answer

1998 c1500 cranks but no start. No codes, good fuel pressure and spark.


CK COMPRESION AND FOR SIGNAL A THE INJECTORS LIKE POWER AND GROUNG SIGNAL FROM PCM

Sep 02, 2014 | 1998 Chevrolet C1500

2 Answers

I have a 1988 olds cutlass ciera 3.8......my problem is the car won't start......cranks over just fine but ain't fire...it has spark, fuel pressure, and the timimg is good and the wiring seems to...


Hello
The engine and transmission in this cars drivetrain are fully electronically controlled by a computer called the PCM (Power Train Control Module). Whenever a problem like this occurs the computer stores a record of the problem in the form of a fault code in its memory, to read these fault codes you must have the systems memory scanned with a special tool. Once the fault code(s) are read you then must perform the appropriate diagnostic testing to find and resolve the problem(s)

Jul 04, 2012 | Cars & Trucks

2 Answers

I REPLACED MY FUEL PUMP ON MY 1999 CHEVY SILVERADO EXT CAB P/U TRUCK AND IT CRANKS BUT IT WILL NOT START...ANY SUGGESTIONS?


did you check for fuel pressure at the fuel rail?
listen for the fuel pump when you turn the key on
did you change the wire harness when you changed the pump?

Sep 25, 2011 | Cars & Trucks

1 Answer

Code p0131 Excessive fuel consumption Intermittent no start (cranks, fires up then dies) Replaced Plugs and wires Fuel filter 02 sensor I don't know where to go from here


CODE PO131 - HO2S 11 BANK 1 SENSOR SENSOR I CIRCUIT LOW INPUT CONDITIONS. POSSIBLE CAUSES LOOK FOR INTAKE LEAKS IN THE EXHAUST SYSTEM, LOOK FOR INTAKE VACUUM LINES LEAKS. FUEL SYSTEM TOO LEAN WEAK FUEL PRESSURE CLOGGED FUEL FILTER,WEAK FUEL PUMP. FAULTY HO2S SENSOR.OR HO2S SENSOR SIGNAL CIRCUIT SHORTED TO SENSOR. HO2S SENSOR DAMAGED CRACKED OR HOLE CLOGGED. PCM HAS FAILED.

Aug 12, 2011 | Chevrolet Malibu Cars & Trucks

1 Answer

97 GMC Safari. It is taking a long time to start. cranks and cranks... about the 3rd or 4th attempt, it will start. This problem just happenend.. One minute it started on the turn of the key... then, this...


Replace the FUEL PUMP RELAY. Its located in the under hood relay center. This relay primes the pump with the key on, about 2 seconds, then the pump will not run until the engine has oil pressure, then the fuel pump is energized.

May 14, 2010 | 1997 GMC Safari

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