I have a 99 blazer s-10 with 145k miles. Sometimes when the engine is cold, after I get started, the truck hesitates, sputters and bucks until it shifts up. After I've drive for 30 minutes at 65 mph, the problem goes away when I am stopping and starting again. It is worse if I start out going uphill.

The flexible accordion hose that connects the MAF to the throttle body might have a small crack in it. They are sometimes hard to see, especially if in the accordion folds or underneath. Starting off or going uphill will result in enough torque to lift one side of the engine enough to open the crack and cause hesitation.

My sputtering & stalling 1993 Honda Accord - YouTube

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My sputtering & stalling 1993 Honda Accord ... 1996 Acura Integra, hesitation accelerating & misfire. ... 1993 Honda Accord Start Up and Review 2.2 L 4-Cylinder ... SIR B16A Engine sputter/ power loss at higher RPM - Duration: 1:14. by ... 1994 Honda Civic Check Engine Light Code Retrieval Tutorial ...

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What should I do if once I turn on my Ac my idle drops as if it's gonna die, and .... to a complete stop the rpms start going up and the car accelerates on its own. ... Honda Accord LX, and my Honda just started sputtering in idle. check engine .... My cousin replaced my radiator on my 90 civic and since then my temp gauge is ...

Acceleration Bog/Sputter/Hesitation - Honda-Tech

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Jun 11, 2010 - 1990 Honda Accord Ex F22 209000 miles, recent alternator change When I ... When I take off from a stoplight I get a little hesitation/bogging/sputteringfeeling until about 2,000 RPM then ... My 1999 Accord had a similar problem (F18B2engine). ... It only lasted a second or so before it would actually rev up.

bad need of a tuneup? like new spark plugs, ?
172 , is 02 rich/ lean warning. this one is low oxy for rich.
this code can just be a victim. for sure , with misfire.
means 02 sensor stuck at rich,
what is water temp in engine coolant, at failure? less than 150F?
could be lots of things.
leaking injectors, bad fuel.
injector sticking> causing misfire.
id use a scan tool and watch all sensor when it fails.
too high fuel pressure.
misfires cold, but only luke warm cold starts not fully cold.

just one DTC, no P0300 or 30x misfire codes, not even P0300 pendings?

use a couple of quality injector cleaner in the tank
run fault codes
remove and clean injectors
check fuel pressure

Hi there. Sorry i do not have a solution for this, however i wanted to see if you ever found one. We too have same veh with the except of it being an automatic, and are having the EXACT same issues you. Any info you have to direct us would be very much apprieated. Thank you.

your timeimg is off if theres a distuributor there just might be u need to losen the bolt right below the distuributor with car off once loose start car it only needs to be loose enough to turn startcar turn ur tarding it upping the amount of gas and air intake u absoreb turn it to the right ur engine should idle hire dont turn to must at all little by littleas u turn hairturns at a time get dont shut hood alll way get in go down the street punch it if it feels good gets it and goes ur good if not keep repeating prosscess until it feels right to u

When your engine is running lean that means it's not getting enough fuel.So if it's one side (or bank) of the motor then possibly you have an injector problem on that side.You'll want to get a fuel pressure test to see if the fuel system pressure is up to specifications.Then get the injectors tested.These tests are simple and realitivly cheap.

If Engine Starts with accelerator pedal depressed , check idle speed control valve (if equipped) and wiring connection. Did you check for vacuum leaks. Do you know if your ignition timing is correct? How did you check your fuel pump? I take it no codes have been set, so if not there are several things to check for when the engine stalls #1 is to check cold start injector and cold start injector time switch. If engine stalls sometimes- check airflow meter and connectors You can tap the connector or relay or wiggle and notice if there is a slight change in the engine idle.

Could be an engine or air temperature sensor problem or a dirty throttle body.
You can check the values of the sensors with an ohmeter getting the specs hot and cold from a manual or your local auto parts store.
The throttle body needs a spray cleaner designed for throttle bodies only as some may damage plastics.

the catalytic converter could be startin to plug up. check the air filter and that you have all the plug wires on the right plugs