Larry!
Larry Dobbs has been the service manager for over twenty years. He has a wide variety of interests but his main hobby is "fixing things."
Larry Dobbs has been the service manager for over twenty years. He has a wide variety of interests but his main hobby is "fixing things."
From automotive to trivia, Larry can find the answer.
Question: Hello,I have a 1996 Neon Highline. The check engine light was on with a code 32 [egr valve], I replaced the egr valve and cleared the codes but now it is on again with the same code. The exhaust smells like it is burning rich and the car seems to burn more gas than it should. I would really appreciate your input on this problem. Thank You
- Kevin
Answer: Thanks for the question. The EGR system has more components than just the valve. Possible causes for the code can be:
Vaccum supply,
Blocked tube to intake,
Bad solenoid/transducer,
Failed PCM computer,
Bad terminal or connector,
Testing the complete system would be the only way to diagnosis problem. Replacing EGR valve with dealer parts will include the solenoid and tube.
The exhaust smell may be related.
Please call for an appointment to test all problems if you wish us to repair this problem
Vaccum supply,
Blocked tube to intake,
Bad solenoid/transducer,
Failed PCM computer,
Bad terminal or connector,
Testing the complete system would be the only way to diagnosis problem. Replacing EGR valve with dealer parts will include the solenoid and tube.
The exhaust smell may be related.
Please call for an appointment to test all problems if you wish us to repair this problem
- Larry
Question: Tech Question: Moth Balls in the Gas Tank
> I have seen some interesting stuff lately about increases one\'s mpg by using some \"little green pill\" additive. Turns out the \"little green pill\" contains the same ingredient as in moth balls - napthalene.
> One tech guy even suggested mixing a little WD40 into the tank as well.
> What do you think? Would napthalene (moth balls) hurt certain components in the fuel system? Or other systems that may come into contact with it?
> I found at least 2 web sites that say moth balls do work to increase the mpg.
> What say you?
> I have seen some interesting stuff lately about increases one\'s mpg by using some \"little green pill\" additive. Turns out the \"little green pill\" contains the same ingredient as in moth balls - napthalene.
> One tech guy even suggested mixing a little WD40 into the tank as well.
> What do you think? Would napthalene (moth balls) hurt certain components in the fuel system? Or other systems that may come into contact with it?
> I found at least 2 web sites that say moth balls do work to increase the mpg.
> What say you?
- Rich H
Answer: Thanks for the question Rich,
We do not suggest any additives other than the ones approved by the vehicle manufacturer. This may include fuel injector
cleaners or gas line de-icers. Todays automobles have many sensors that can be damaged or altered by incorrect fuels. We suggest
a good brand of gasoline and the correct octane level for that engine.
We do not suggest any additives other than the ones approved by the vehicle manufacturer. This may include fuel injector
cleaners or gas line de-icers. Todays automobles have many sensors that can be damaged or altered by incorrect fuels. We suggest
a good brand of gasoline and the correct octane level for that engine.
- Larry
Question: I have a 1999 VW Beetle, that has been in the Import shop here
in town twice and its still not fixed even though he did find something
wrong each time. First time the check engine light came on it was
the catalytic converter, repair bill was $600. It still does not get
over 18 mpg, it has the 2.0 engine, automatic. Second time we took it in for low mpg and had starting. He found the dip stick tube
was cracked and replaced it. Said this shoud take care of all my
problems. No such luck. Still only 18 mpg and hard starting the first time you start it and then after it sits a couple hours. Its OK
inbetween. I read that if you had a bad catalytic converter you
most definetly change the O2 sensor because it gets junk on it
from the bad catalytic converter, so the sensor doesn\'t work properly. Any ideas you might have on the hard starting and
changing the O2 sensor or somehthing else it might be??
Any help would most greatly appreciated!!! I am so frustrated.
Thanks-Tracy
in town twice and its still not fixed even though he did find something
wrong each time. First time the check engine light came on it was
the catalytic converter, repair bill was $600. It still does not get
over 18 mpg, it has the 2.0 engine, automatic. Second time we took it in for low mpg and had starting. He found the dip stick tube
was cracked and replaced it. Said this shoud take care of all my
problems. No such luck. Still only 18 mpg and hard starting the first time you start it and then after it sits a couple hours. Its OK
inbetween. I read that if you had a bad catalytic converter you
most definetly change the O2 sensor because it gets junk on it
from the bad catalytic converter, so the sensor doesn\'t work properly. Any ideas you might have on the hard starting and
changing the O2 sensor or somehthing else it might be??
Any help would most greatly appreciated!!! I am so frustrated.
Thanks-Tracy
- Tracy
Answer:
Tracy:
The poor fuel economy and hard to start may be a leaking "Fuel pressure
regulator". This will cause the engine to run rich and also flood the
intake with fuel. This can be hard to test. We used clear plastic hose in
place of the vacuum hose.
Running the engine will show fuel moving through the plastic hose (it should
remain clear if the regulator is ok).
Two other possible causes can be the "Mass air flow sensor" and the
"Oxygen sensor". Both can cause poor gas mileage.
Thanks for the question, hope the problem gets solved.
Tracy:
The poor fuel economy and hard to start may be a leaking "Fuel pressure
regulator". This will cause the engine to run rich and also flood the
intake with fuel. This can be hard to test. We used clear plastic hose in
place of the vacuum hose.
Running the engine will show fuel moving through the plastic hose (it should
remain clear if the regulator is ok).
Two other possible causes can be the "Mass air flow sensor" and the
"Oxygen sensor". Both can cause poor gas mileage.
Thanks for the question, hope the problem gets solved.
- Larry
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