Have a Car Question? Ask a Mechanic Online.
Hi what is the solution?
a couple of things you need to do here
OK what? I'm looking for an answer to my question
first,,,,you need to check the fuel pressure,,these must have no less than 9psi at all times,,even while turning the starter
sometimes a weak fuel pump will do this
fuel pressure is ok
the next thing would be the ignition module
fuel pump is OK
ign module has also been replaced
i have seen bad ignition modules do this
how much fuel pressure does it have?
what can happen here,,is the starter can pull amps away from a weak fuelpump
you need to check the fuel pressure while turning the starter
it must have no less than 9psi with the starter turning
had a problem several years ago that the vehicle started fine when cold and would stop after running a while and then would not re-start until the engine cooled down for several hours --ign module!
engine will start immediately when above 50 degrees outside. Hard starting below 50 degrees. ( temps just dropped here in Atlanta) the engine may have to be cranked 30-50 seconds to get started. sometimes it is like it is hitting on one cylinder, then two, then three ..."i think I can" once it starts, it runs fines. the engine can be cut off immediately after starting in this situation and will start normally immediately
this seems more like a computer type/electronic problem --which is why I first replaced the cold start sensor
i under stand that
did you replace the module for this problem?
provide me a phone # XXXXX reach you so we can talk about this . So far we are "NO PAY." you have not solved my problem or provided me with anything I don't already know
sorry,,we are not allown to give or receive any personal info
if it were the module now, it is unlikely that the engine would start --much less re-start immediately as normal after the initial start
a module will do this
what it will do,,is kill the pulse to the injectors
Sorry then. I have to say UNSATISFACTORY and refuse payment for service
if you will hang with me...we will fix it
are you willing?
or,,do you just want to use me to blow off steam?......i work on these every day
So far, I don't see much to encourage me. I have worked on my own cars for many years. It is getting tougher due to computers. I have discussed this problem with several of my friends who are ASE mechanics. We have been thru all these things. No one has an answer. I didn't worry about it over the summer. This is a back-up utility vehicle, not my prime transportation so it has not been a high priority with me. The difficulty in starting is more of an irritant ...coupled with the fact that it does not make sense to me and I don't like problems I can't solve
ok...do you want to fix it?
if so,,we will test a few things
if not,,,we are wasting each others time
I don't need to "blow off steam" I was hoping for a fix from someone smarter/more experienced than me. But I am not sure this is an on-line fix. I may need to give the vehicle to a shop and let them experience first hand what I have described
we can do it
I am always willing to pay for results, but not for what I have gotten thus far ..and I say that with no disrespect intended
I don't want to waste your time or mine
lets fix it
are you ready?
is the engine cold now?
Let's understand that if we can't fix it, I am not willing to pay for suggestions that did not solve the problem.
on this site..you dont need to pay if we dont help you
are you ready to start?
I drove it this morning to take my wife to the airport. My guess is that right now I could start it without a problem. It depends on the temp in the morning ..and temps are supposed to go up the rest of this week. The intermittent aspect of this makes it difficult to diagnose ..and especially if you are not here to see it firsthand and are trying to communicate as we are now
But I am willing to try whatever you may wish to suggest. However, it may be an in the morning kind of thing to see what the results might be
Your call whether to go forward
is that yes or no?
quit writing me novels...lol
we need to check a few things
if yes, tell me what you want me to check and I will try to get that done today. I have several irons in the fire right now
and just answer a few questions
there are a few things that can cause your problem
what you need to do,,
is to take the breather off of the throttle body
look at the two injectors
have your help to turn the engine
the injectors should pulse fuel when the starter is turning
when it is cold
i would think you dont have a pulse cold
the fist thing you will need to do
is to test the fuel
it must have no less than 9psi..anything less wont be enough pressure to push the fuel though the injectors
if the pressure is fine
you will need to replace the ignition module,,,,when the ignition module does this,,testing them at the parts store may not help...sense it will still have a spark
the starter can pull amps away from a bad
ignition module,,killing the pulse
if the fuel pressure is weak,,replace the fuel pump
if both of these check out
remove the throttle body and clean the injectors
sometimes these will get clogged with deposits and not let it get enough fuel for cold starts
1. Before servicing fuel system components, fuel system pressure must be released. To relieve pressure, proceed as follows: a. Remove fuel pump fuse from fuse block. b. Run engine until fuel remaining in lines is consumed. When engine shuts down, engage starter for approximately three seconds to relieve any remaining pressure. c. With ignition off, replace fuel pump fuse. 2. Remove fuel line between TBI unit and fuel filter. Use a suitable back-up wrench to hold flare nut on throttle body when removing line. 3. Install fuel pressure gauge J-29658 or equivalent, between throttle body and filter. 4. Check pressure reading with engine running. Fuel pressure should be between 9 and 13 psi. 5. De-pressurize fuel system, remove pressure gauge and reinstall fuel line. 6. Start engine and check for fuel leaks.
if i am not right and it doesnt fix it
no need to pay
problem #1 is I don't have a "helper" right now. My wife is out of town for then next week
Fuel pressure was fine when I checked that last winter during this problem, but I understand. What I don't understand is why the engine would immediately start again like normal after being shut off as soon as it "hard started"
I can put in another ign module but if that does not solve the problem, I am out the cost of the module since there is no return on electronic parts. If that works, HALLEJULAH! And you are a SMART guy!!
I'm feeling better about you with these specifics :)
I am going to cross my fingers
If I lose you now, how do I re-connect if these things don't solve the problem at hand?
the checks you done,,was then
we need to do them now why you have the problem
all you need to do..is sign in to justanswer and reply back to this thread
to boil it down.....
i think your problem is eiather the fuel pump...or the ignition module
no need to leave a rating yet
you can after you get it fixed....or reply back to me for more info
are you there?
Since I said my guess was electronic to begin with, I am leaning toward the ign module. I was not aware that the ign module might prevent starting below the 50 degree mark as opposed to preventing starting when it heated up --perhaps causing a circuit "separation"
I hear you about doing them now vs then.
My initial diagnosis was fuel or electric --which is why I changed the fuel filter as a "first" step. Not expensive to do. Easy access. Normal maintenance
Thanks for the recs. I will give them a try and come back to you with success or failure.
I may go to the parts store today and get an ign module since I don't need a helper to try that
What part of the country are you located?
This Rodeo has been a GREAT vehicle. Very reliable and little maintenance other than routine consumables. A far cry from my Volco XC90. I won't won another Volvo! Nice vehicle. Good performance with the V*. EXPENSIVE parts and service ..and a LOUSY corporate attitude. I was told by the Corporate Service Manager of Volvo North America, "We don't condone customers working on their cars" when I called with a problem. I found that a bit arrogant
Had to take a call
please unerstand..after you buy the module,,it is yours,,,id rather you check the pressure first....
then if the pressure is right,,then replace the module
if the pressure is low,,you will need to replace the fuel pump
im in tenn.