QuestionSo basically what your saying is that you have no clue just like every other mechanic that i have talked to. A dealer is no better than a guessing game anyways. Hell their the ones that had it from the begining that told me it was just a fuel pump.
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Followup To
Question -
I recently bought a 1995 Chevy 1-ton cargo van under the presumption that all it needed to run was a new fuel pump. It has 188,000 miles on it and has a 5.7 TBI. When I first got the van it would start fine and idle roughly, but as soon as it was put in gear it would stall. It would also stall under the load of the AC unit running. So I changed the fuel filter and pump. This made no change to the stalliing engine. Since then I have also changed the Throttle Position Sensor, fuel pressor regulator, fuel injectors, and the idle control sensor. I also checked to make sure the catylitic converter was not pluggged. I have also changed the distributor assembly, cap, and rotor. All of this and still the engine starts, but dies as soon as being put into gear.
Then I found that I could make the van run by unhooking a vaccum line to the MAP sensor and unhooking the wires to the coolent temp sensor. With these unhooked the van will stay running while in gear and can be driven up and down the road, but not very smoothly. It runs really rich and blows black smoke out the exhaust. I tried replacing both the coolent temp sensor and the MAP sensor, but still no luck.
I'm about ready to give up and take it to a dealer, but wanted to see if you had any ideas first. Any advice you can give me would be greatly appreciated.
Thanks
John
Answer -
with all the guessing and parts that you have replaced ALL of which will have to be TESTED to be sure that they are all operating correctly your pretty well stuck with taking it to the dealer.
NEVER EVER run a computerized vehicle with sensors UNPLUGGED such as you did as you can damage other electronic components as well as plugging up the catalytic converter and damaging the vehicles computer.
You most likely ONLY had a simple carbon build-up that could have been resolved for $10.00.
But now all the changes you made have to be re-checked and verified for proper operation before the simple fix can be made.
ALWAYS ASK before you start guessing and changing parts.
My apologies if I seem to come across as being extremly BLUNT.
autohelp
AnswerI know what your problem is, As I have seen it many times.
But since you started guessing and swapping parts I have no idea if the parts that you installed are setup correctly and if they are NOT my answer to fix your problem will not help your situation.
I have been doing this for over 25 years and there is NO SIMPLE answer when your dealing with numerous inter-related electronic components that transfer information back and forth from various electronic components.
Today's vehicles are NOT your 30 yaer old vehicle when all that was needed was fuel. ignition and valve timing and the engine will run.
There are numerous electronic components and just ONE that is faulty will prevent the vehicle from starting and or running.
I am on 3 different boards for auto repair and answer well over 60 questions DAILY and do not appreciate your disrespect and rudeness.
