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0860silverado

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One idea would be to temporarily swap out your computer with a known good one. With the way it's running, it seems like there should be a code flashing if the computer were working properly. (edit)...I just saw that you have a PCM coming. Hope that gets it fixed!
 
DRZRon1

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where are we at with this - I’m emotionally invested in the fix/repair and if you are in good shape and back on the trails.
 
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P1000_DLux

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Current status is that the PGM-FI was purchased and installed and it didn't fix it. I'm waiting on the throttle position indicator right now and that is next. I changed the IACV sensor (didn't work). After I do the throttle position indicator I'm going to be buying a new fuel pump and swapping that.

If that fails, I'm going to pour gasoline all over it and light it up, roll it over a cliff. To say its frustrating is an understatement at this point.

I have tried and do apricate the tech tips from here but none of it has worked and I have tried it all.
 
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hondabob

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It might be a good test to disconnect one injector and drive it on one cylinder then try the other cylinder. The dealer can check the sensors with their Honda computer. A new fuel pump may fix it but monitoring the fuel pressure is a good test. Low fuel pressure may allow it to run good on one cylinder.
 
HBarlow

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I doubt half (50%) of Honda Powersport dealers have a real mechanic who can listen to an engine and logically troubleshoot and diagnose a problem like this and like a few of our members who posted above can. Same with auto dealers.

Dealerships have "techs" now who know how to plug the vehicle into a computer and replace the suggested parts.

It's the same with homes, appliances, lawn and garden equipment, etc. Young men and women quit learning trades years ago.

I've been trying for several years to hire someone to make several small repairs and upgrades to my home. Young people in the region where I live play with their iPhones or use drugs.
 
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Hello_Darkness

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I doubt half (50%) of Honda Powersport dealers have a real mechanic who can listen to an engine and logically troubleshoot and diagnose a problem like this and like a few of our members who posed above can. Same with auto dealers.

Dealerships have "techs" now who know how to plug the vehicle into a computer and replace the suggested parts.

It's the same with homes, appliances, lawn and garden equipment, etc. Young men and women quit learning trades years ago.

I've been trying for several years to hire someone to make several small repairs and upgrades to my home. Young people in the region where I live play with their iPhones or use drugs.
The main problem with Honda is we never learn how the s*** works in the first place.

It's even more difficult to Diagnose when we aren't given the tools to understand the correct way it should operate.

Even for experience guys like myself, sometimes all we can do is make an educated guess and replace the parts we think will fix it.

Alot times the troubleshooting for a code or issue is erase the code and try again. If it comes back then replace parts until it goes away.
 
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DRZRon1

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Current status is that the PGM-FI was purchased and installed and it didn't fix it. I'm waiting on the throttle position indicator right now and that is next. I changed the IACV sensor (didn't work). After I do the throttle position indicator I'm going to be buying a new fuel pump and swapping that.

If that fails, I'm going to pour gasoline all over it and light it up, roll it over a cliff. To say its frustrating is an understatement at this point.

I have tried and do apricate the tech tips from here but none of it has worked and I have tried it all.
Jeezus - good luck - hope “something” solves it.

By chance, imo - I’d scour the darn wiring for damage while waiting.


hopefully it’s insured - the insurers get itchy if you buy a policy and it magically goes up the next day - or at least park it next to a Polaris and make sure both go up - no questions asked
 
ODAMO

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Jeezus - good luck - hope “something” solves it.

By chance, imo - I’d scour the darn wiring for damage while waiting.


hopefully it’s insured - the insurers get itchy if you buy a policy and it magically goes up the next day - or at least park it next to a Polaris and make sure both go up - no questions asked
Guaranteed solid alibi.

“I took it to the local Polaris dealer to trade it in and when the salesman came out to look at it the whole lot was on fire”
 
HBarlow

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The main problem with Honda is we never learn how the s*** works in the first place.

It's even more difficult to Diagnose when we aren't given the tools to understand the correct way it should operate.

Even for experience guys like myself, sometimes all we can do is make an educated guess and replace the parts we think will fix it.

Alot times the troubleshooting for a code or issue is erase the code and try again. If it comes back then replace parts until it goes away.
My point is a genuine mechanic grew up at a time when most boys were car enthusiasts. He lived and breathed cars and couldn't wait until he was old enough to have a driver's license. He watched older boys and men do their own work and learned from them. A mechanic doesn't require the manufacturer to tell him anything and he doesn't require any computer diagnostics. Boys that grow up with an iPhone in their hand and watching television are not likely to become good auto mechanic. Modern fuel-injected and computer-controlled engines are complex and some sophisticated tools are often used but the basics remain the same..

An internal combustion engine operates the same whether it's a 700+hp Scat Pack Hemi V8 in a Dodge Challenger or a `single cylinder 1 1/2 hp Briggs and Stratton lawn mower engine. A gasoline engine requires three things to run: compression, fuel (air & fuel mix), and a spark. A mechanic will proceed logically, step by step, to determine if all three are present at the correct amount and at the correct time.
 
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DRZRon1

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The main problem with Honda is we never learn how the s*** works in the first place.

It's even more difficult to Diagnose when we aren't given the tools to understand the correct way it should operate.

Even for experience guys like myself, sometimes all we can do is make an educated guess and replace the parts we think will fix it.

Alot times the troubleshooting for a code or issue is erase the code and try again. If it comes back then replace parts until it goes away.
U r spot on - I feel for ya - we slam $40M worth of equipment into a plant and pretty much say to the MNT folks - good luck with that. Sucks balls.

While most of that stuff does the same thing , it’s all the advanced PLC control that works like a charm but got to know what it’s supposed to do and is the downfall of knowledge: the freaking code doesn’t look like ladder logic anyone - that anyone can understand .

I can only imagine what it’s like on these engines with the ecm, no theory on what’s programmed inside - and no way the average guy can monitor it to see what the logic is doing/ not doing.

It’s beyond fuel/spark/compression anymore - the ecm brain is the wild card .
 
Hello_Darkness

Hello_Darkness

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My point is a genuine mechanic grew up at a time when most boys were car enthusiasts. He lived and breathed cars and couldn't wait until he was old enough to have a driver's license. He watched older boys and men do their own work and learned from them. A mechanic doesn't require the manufacturer to tell him anything and he doesn't require any computer diagnostics. Boys that grow up with an iPhone in their hand and watching television are not likely to become good auto mechanic. Modern fuel-injected and computer-controlled engines are complex and some sophisticated tools are often used but the basics remain the same..

An internal combustion engine operates the same whether it's a 700+hp Scat Pack Hemi V8 in a Dodge Challenger or a `single cylinder 1 1/2 hp Briggs and Stratton lawn mower engine. A gasoline engine requires three things to run: compression, fuel (air & fuel mix), and a spark. A mechanic will proceed logically, step by step, to determine if all three are present at the correct amount and at the correct time.

That's the problem, you cover your bases abd then what?
I've been in this situation, thing runs like s*** after getting warm. Compression good, spark on both cylinders, swap injectors and still nothing.

Turns out the driver in the ecm was hanging 1 of the injectors too long and fouling that plug. Since the IACV valve was open more when cold it's happy then.

But there's no information past the easy stuff to find that out, I just had to tell the customer I think it's this $500 part, let's cross our fingers.
 
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HBarlow

HBarlow

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The ECM is not a mystery.

It does a similar job in every modern engine regardless of number of cylinders, displacement, or rated power. It uses a pulse from a crankshaft pósiton sensor to know where each piston is in its travel and provides a pulse to each fuel injector to cause it to squirt fuel and to each spark plug to cause it to create a spark.

The ECM adjusts the length of the fuel squirt as demanded by the driver's right foot and ignition spark advance or retard to match engine rpm.