Question about 1990 Chevrolet K1500

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1990 chevrolet 1500 pickup starts hard when cold

1990 1500 silverado TBI 350. auto. acts like there is no choke or choke affect when cold, have to hold gas open a little bit to start then wont idle properly until it reaches operating temperature

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  • jaymes2004 Mar 17, 2009

    i have a 92 TBI 350 it runs like the timing is retarded for 10 sec. every time you start it, it sounds like a drag car with a huge cam and is idleing at 500 rpm and then it picks up and runs perfect (occasional stalling at stop signs), i checked the timing,cap, rotor plug, wires, plugs, i also dropped the tank because it had low fuel pressure and the rubber line between the pump and the steel line was cracked it runs alot better ohh yeah and put in a new temp sender. please help me im lost

  • Anonymous Mar 13, 2014

    Have a 97 Nissan pickup, it chokes out like its starving for gas ,have had all the sensors replaced, still chokes out and dies



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I'll check it out,but it starts this when i have been on the road for a while. If i put it on cruise control it does not happen? I have a Dodge Stratus.

Posted on Jul 15, 2013

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Most likely the coolant temperature sensor for the vehicle computer. Secondly, could be the tps sensor "throttle position sensor" not registering correctly or perhaps lots of other things but most likely the coolant temp sensor.

Posted on Dec 30, 2008


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1 Answer

My 350 tbi engine starts up, runs fine til it get warn, then it starts missing, chokes out etc.why?

probably Idle air control valve or EGR. under the dash there is a diagnostic port! with key off bridge terminal A & B turn key to on position (do not start) this will flash any trouble codes VIA the check engine light the first blink(s) are confirmation. then count blinks EXP,*** **= 32 , ***** ***= 53 , ** ********= 28... then just google GM OBD1 trouble codes and see what the problem is . 1_30_2013_3_58_06_am.jpg

Jan 30, 2013 | 1990 Chevrolet K1500

1 Answer

When i first start it it acts like the choke is working and then quiting back and forth if i give it gas it quites and works fine until i let set and get cold again

you dont have a choke its efi idle air control valve mabe take it to the auto parts store like auto zone ask them if they have any ideas also ask them to hook up there code reader they will do it for free

Jan 06, 2011 | 1999 Chevrolet Silverado 1500

1 Answer

I need a complete wiring schematic for a 1990 chevrolet silverado 1500 witha 350 TBI engine.I have two manuals for the truck,but they don't have the engine wiring.They have chassis wiring, but not the...

You should be able to get what you need from
This is a fee based website and you can print out the info you need as well as the diagrams.
Hope this helps!!

Nov 30, 2010 | Chevrolet 1500 Cars & Trucks

1 Answer

My 1990 350 tbi will not start. the fuel is getting all the way to the fuel injecters but wont come out

Make sure you are getting power to the injectors. I have the same,350 tbi. Check the fuses and relays and check the wires at the tbi to make sure one of them is not rubbed through. The injectors have to be getting intermitent power .

Mar 09, 2010 | 1990 Chevrolet K1500

2 Answers

Engine hard start sometimes spcially after long travil

probably not that. it is more than likely the cold water temp sensor. this puts more fuel to the engine when cold and acts like a choke.

Dec 17, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

When cold my 93 chevy rbenjamin harrisonuns rough

give a good tune up. if it still is acting up let me know

Oct 16, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

Hi I have a 1992 silverado with a 350,hard to start.

When it runs really rough is there alot of black smoke? Could be the fuel pressure regulator diaphram, real easy to change on that TBI...

Mar 22, 2009 | 1992 Chevrolet K1500

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