Question about Chevrolet C1500

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1988 4x4 pick up, 350 throttle body floods out at low rpm, let it set and then runs ok for a little bit. Acts like it might be throttle position sensor??

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Take air breather of and watch and listen to the injectors, if they seem sporadic then that would be my first guess, Second O2 Sensor,

Posted on Dec 27, 2008


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1 Answer

Changed fuel pump and inline filter,starts like its flooded and will run at high rpm,but surges at low rpm then dies like its flooding out,dont know what to do,could it be fouled plugs?

Any applicable trouble codes? Clean the throttle body and idle air system. Check for vacuum leaks.
I don't know year--make--model?
If a fuel problem, use a fuel pressure gage, check for correct pressure, then with key off, see if the pressure holds for a bit. If pressure drops like a rock then check for fuel pressure leak.

Oct 30, 2016 | Cars & Trucks

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Engine idles a little high when in drive

check hoses for vacuum leaks also throttle body may need to be cleaned and or throttle body position sensor can be starting to be faulty or may require cleaning with throttle body --the following links show how to clean a throttle body look up the ones that do it in /on vehicle you dont have to remove it from vehicle
How to Clean throttle body GM 3800 throttle Body Tune Up Cable accelerator... Throttle body cleaning and idle relearn procedure

Jul 27, 2016 | 2006 Buick Lucerne CX

1 Answer

Why 2bl carburetor floods its crank some time but you has to keep padle down it wont pick up rpm

look at the inside of your throttle body to see if the air flap is opened enough to let air in without you holding the gas paddle down.

Jul 01, 2014 | 1990 Toyota Tercel

2 Answers

87 suburban ODB1 Codes 15, 22, 33&34

Take the vehicle out and drive it at 55 miles an hour if you can and see if that changes anything. GM's vehicles had a lost info setting in the computer that would cause the engine to idle at high RPM if the computer could not be sure of the IAC motor position. The motor is set back to home/closed position once the vehicle passed a certian speed in normal driving. The problem you have is why I have never been a fan of engine swaps! The wiring harness for the two engines is probably different too. I once worked on a car that had a fried dash harness because the cigarette lighter screwed up. Insurance company would only pay for used parts I personally went and pulled the dash harness out of a car that was the same model and year, but back at the shop the two harnesses had very little in common.

Apr 15, 2017 | Cars & Trucks

1 Answer

I have a 88 gmc sierra 1500 with 350 and throttle body it acts like it is stuck on choke i have replaced throttle position sensor,o2 sensor,temp. sensor,egr valve snd removed throttle body and cleaned . i...

the idle air control actuator is a common problem in this type of fuel injection an is mounted in the throttle body also the map sensor should be on top of intake make sure is connected right and have full vacum if so just tap on it with engine running and will miss if it is faulty please let me know if this helped or need further assistance i'll be glad to help.

Mar 15, 2011 | GMC K1500 Cars & Trucks

1 Answer

Car starts great in morning smell gas little bit after warms up takes a bit to start rpm go up and down for 30 sec

i would try replacing the throttle position sensor its located on the side of your throttle body

hope this helps

Feb 27, 2011 | 2002 Pontiac Grand Am

1 Answer

After my 92 rodeo runs awhile it falls on its face then starts to idle at about 2500 rpm and wont stop. When I shut it off and try to restart it it starts real hard and acts like its flooded and blows...

THROTTLE BODY needs to be taken apart and cleaned. Hand clean the sensor and idle valve, they are electric do not soak them, check them also, Idle valve likes to stick and position sensor likes to go out. HUNT

May 11, 2010 | 1987 Isuzu Trooper

1 Answer

93 chevy 350 throddle body problem

The injector assembly also contains the pressure regulator. Since the truck has been sitting, you may have some corrosion in the regulator and the injectors. Try a fuel cleaner and the work on the regulator.
RPM Northwest

May 29, 2009 | 1993 Chevrolet C1500

2 Answers

2004 Honda Civic -Code P0122 Throttle Position Sensor Voltage Low

yes, this is the case of a failed throttle body, in which case it needs replaced, the car is getting too much fuel causing the high idle. this needs replaced asap. you could proably find a small independant honda shop that could do the work for less.

May 12, 2009 | 2004 Honda Civic

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