Damn! I hate stuff like that!!!  I'm an industrial elec. engineer and get into some funky problems. My temper gets the better of me at times and the ole' BFH gets whipped out    and yes, sometimes it does work.  Seriously,  bad solder joints can also make for some relly PITA troubleshooting.  Had a bad wiper motor in the suburban a few years back and it was recalled for "improper soldering" ( there was a PC board in it for the intermit. wiper circuitry) .  I'm still leaning on the computer side of things. Cold or broken solder joints in there can cause stuff like this to happen. Good luck.

Ron

I hear ya, I took electronics while I was in the Millitary, as well as digital logic, and this is pissing me off, I had the same thought a cold solder joint, I am going to pull the brain and check the board for damage, and if nothing I will reheat all the joints and try that, I really wish I had a scope still. I just am afraid this thing will leave me high and dry in the worst spot.

Mac

Yep, fixed lots of control equipment by simply re-flowing the joints on suspect boards and such.  Hope it works out for ya.

I hear some of the Caps used in the ECUs
were of suspect quality (mitsubishi builds
these ECUs for Suzuki) and that they fail
and leak acid onto the boards, after a while
the acid eats thru and computer no work no
more.  

Your mission, should you choose to accept it,
is to infilterate the ECU, find the offending Caps
and take e'm out, then replace them with good
ones, clean the board and make sure it's in good
order, you might even consider re-sealing the
board with that electronics board spray to protect it.

I've had to wash and dry computer mainboards
so I think you can wash the ECU, then dry it in the
oven at 200* for an hour or two, I washed mine with
an old tooth brush, or new if you want    and dish
detergent, rinse with distilled water for a spot free
shine, and dry in the oven.



Good luck
Darrin

Well that process should earn you the "Good Zuke Keeping" seal of approval!  

Well, I think I have narrowed it down to a temp sensor,either the air intake, or coolant temp sensor, as soon as the truck warms up it starts to dump a ton of fuel, and burns super rich.

Mac

Well it turned out to be a flaky intake air temp sensor, and a flaky coolant temp sensor. Runs like a charm now.

Mac

Sweet, good to hear it worked out for ya.

Did Biker come to your house today, shortly after I left?


I saw him on the highway heading towards your pad.  

I was hoping he didnt mistake my truck for yours and end up not going over because he thought I was you.

No I think he was heading out to pick up his kids, I am so glad the truck is fixed it was really starting to *** me off.

Mac

Oh ok.

Ya it sounded like quite the run around inorder to get it running smooth again.


We should celebrate by going to Dumont next weekend.  

Well it turned out to be a flaky intake air temp sensor, and a flaky coolant temp sensor. Runs like a charm now.

Mac

What was involved in replacing these sensors?  How much did they cost?  Thanks.

They were easy to replace, they just are threaded into the intake, the air temp was just screwed out, the coolant one I had to drain some of the antifreeze out first.

Downside $90.00 each cdn

The ### off the computer still did not show an error code.


Mac

What type of store did you buy them from?  Would a chain store like a Auto Zone have them or do I need to go to NAPA?  Did you need to replace both of them?

A Suzuki part only.

Mac