Question about 1995 Chevrolet G20

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I have a1995 chevy g20 van 4.3 and evry once in a while it will start to run really poor. engine starts to "gallop" and smells like its running rich. codes 44 and 45 set. any help would be great

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Sounds like your oxygen sensor. I had a similar problem with my blazer I replaced the 02 sensor and it is now running fine.

Posted on Dec 20, 2016

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Posted on Jan 02, 2017

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1990 Chevy van fusebox location


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My '89 Chevy G20 350ci (5.7l) TBI Has a hard starting problem in the morning . Ive heard a MAF sensor can cause this or is it fuel related ? Thanks .


MAF sensors can cause the engine to run rough, have no power, etc. I had a Blazer that didn't run right on start up. It would backfire and run rough until it warmed up, but still never ran good. MAF stands for mass air flow and if it tells the computer the wrong airflow, the computer will mis-judge the amount of fuel to add. On the other hand, if it won't start at all it could be the fuel!

Apr 01, 2015 | 1989 Chevrolet G20

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1992chevy g20 van 5.7liter. Starts and stalls at an exact time every time.


check egr valve for carbon and proper function --also check cat converter possible clogging

Apr 16, 2017 | 1992 Chevrolet G20

1 Answer

95 chevy g20 van started to lose power while driving and began to spit and sputter


Ck your alternator output, should be between 13.8 and 14.2 volts, A bad alt will cause the battery to discharge when driving, Once voltage drops to a certain level (9.8 I think ) the ecm starts to shut down causing all kinds of strange problems, like running bad ,trans not shifting right, even the radio ! It happened to me in my 95 chev p/u

Jul 31, 2012 | 1995 Chevrolet G20

1 Answer

My 1995 Chevy G20 van won't start most of the time. The engine cranks and whines, but never starts.


I would be looking for fuel first a faulty fuel pump. second seeing if you have spark, bad wires or plugs or even distributor, timing could be out

Jan 29, 2012 | Cars & Trucks

1 Answer

I have a 1995 chevy van g20 5.7 8 cylinder the van burns a lot of gas, a rich gas smell coming from thr tail pipe. when i stop the van and i accelerate again i get a flat spot. i put the van in drive and...


You might have a shorted injector driver. Disconnect the injector harness from that cylinder and connect a noid light or a high impedance test light and start the engine. If the light stays on instead of blinking, then the injector driver in the PCM is shorted and replacement will be required.

May 18, 2011 | Chevrolet Suburban Cars & Trucks

2 Answers

I replaced 02 censor as pre bd1 code reader but service engine light still comes on and the van runs with a gallop


The gallop you say that is happening I assume is a cycling Normal RPM to High RPM condition. This is most commonly due to a problem in the Vacuum advance system or a loose or stretched timing belt/chain. Check the timing and see if that is fluctuating.

Jan 25, 2011 | 1988 Chevrolet G20

1 Answer

I just changed the thermostat in my chevy g20 van. I had to unplug a plastic line just above the thermostat to get the thermostat housing loose. I reconnected the plastic line after installing the...


Did you unplug the coolant sensor near the thermostat when you changed the thermostat?
Check it for a bent/broken pin or a bad connection.Black smoke and a check engine light can be a sign of a possible coolant temp sensor problem.
You should run the codes to check what the van is actually asking for and don't forget to recheck the coolant level after you have driven it a bit,WHEN IT IS COLD!A great van to own!

May 04, 2017 | 1995 Chevrolet G20

1 Answer

My 82 chevy g20 van is running really rich i changed the plugs but still get alot of black smoke out the exhuast. i can smell its running rich. also the engine temp does not get very high. im thinking the...


Take your carb cover off and see if the top butterfly valve is open when engine is warm. If not the choke is sticking. Also be sure your air filter is clean (or new) because a dirty air filter acts as a choke if too dirty.

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Engine turns but not starting fuel pump is working 1993 chevy G20. it is getting fuel. it tries to start then just turns over


hmmm. if your sure that it is getting fuel than the starter itslef might be going out...

Mar 30, 2009 | 1993 Chevrolet G20

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