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Hesitates, Bogs down, wont start
#1
Posted 26 August 2006 - 06:58 PM
#2
Posted 26 August 2006 - 07:25 PM
Just kinda sounds like the engine is being starved for fuel to me.
#3
Posted 26 August 2006 - 07:31 PM
#4
Posted 26 August 2006 - 07:40 PM
The fuel pressure regulator is typically attached to an end of the fuel rail where your fuel injectors are fed from. It is connected to the intake vacuum, and when you engine is idling it has high vacuum which reduces the fuel pressure to the injectors, when you open the throttle the vacuum decreases and the regulator will allow more fuel pressure to the injectors. If the regulator is stuck then you may not have enough pressure, however even if the regulator is working fine if the pump is worn out then the regulator doesnt know and leans it out even more.
I suggest that you unplug the vacuum line from the regulator and cap the line off and then see if the car still bogs down.
Honestly though Im not so sure the regulator would cause the problems to the extreme that you are describing. I am still thinking about the pump.
Edited by hgffrank, 26 August 2006 - 07:42 PM.
#6
Posted 27 August 2006 - 09:15 AM
Did you read the post?Replace your fuel filter its cheap easy and should be done any how.
Seth
The fuel filter was already replaced.
#7
Posted 27 August 2006 - 09:37 AM
I would test the fuel pressure regulator, and the pump.
Just kinda sounds like the engine is being starved for fuel to me.

#8
Posted 27 August 2006 - 09:43 AM
Not really bro, yeah replacing the pump sucks, but if you do like someone did on my car, and just buy an inline fuel pump, the task is oh so easy. Just leave the one in the tank and install the inline pump under the floor pan on drivers side, easily reachable and yet tucked out of harms way. I have put 50,000 miles on my car since I bought it and the pump is working fine to this day.
Kinda sounds like the pump, which is sort of bad news.
#9
Posted 27 August 2006 - 10:03 AM
#10
Posted 27 August 2006 - 10:09 AM
#11
Posted 27 August 2006 - 02:26 PM
#12
Posted 27 August 2006 - 05:13 PM
Or if you do it yourself there is always the trap door method of cutting a door out of the floor pan and replacing the pump then re-attaching the plate that was cut out.
#13
Posted 27 August 2006 - 05:35 PM
I would put in a inline fuel pump and avoid having to drop the tank. If you are doing it yourself, you will find that its way easier, and the inline fuel pumps dont cost a lot. Exact price I dont know but I have looked before and they werent too bad. And if you are gonna have the work done at a shop you will pay way less by just having the inline pump installed as apposed to them having to drop the rear axle and tank.
Or if you do it yourself there is always the trap door method of cutting a door out of the floor pan and replacing the pump then re-attaching the plate that was cut out.
I don't know if you can do that on a 4th gen Frank, have you ever heard of someone doing that on a 4th Gen?
#14
Posted 27 August 2006 - 05:49 PM
#15
Posted 27 August 2006 - 06:14 PM
I dont know Bob, but I dont think there is much difference between the fuel systems of the 3rd and 4th gen except most of the 4th gens have EVAP testing capability, so that would be the only difference I can think of. As long as the fuel pump was the right pressure then I dont see why it wouldnt work. I know on my car it doesnt have the EVAP testing capability but the system still works just liek it was designed, so I dont forsee any problems.
I have always wondered if it would work, it sure would be nice it if would on a 4th gen. I remember discussing this in the past and someone saying it wouldn't work for some reason. I will have to see if I can dig up the post. I don't think there was a definite answer though.
#16
Posted 27 August 2006 - 06:45 PM
#17
Posted 27 August 2006 - 07:13 PM
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#18
Posted 30 August 2006 - 06:26 PM
check rail presure pump flow and ring out the injectors i know on the 3.1 in my 91 they have to read over 10ohms across the pins any less then 10 they are bad more is fine i hade 3 go bad on me and it acted just like yours is fire run and die or it would fire die fire die and it drove me nutz just rule it out will all the tests before you go putting somthing in that is not needed (if one is bad over enough time it will kill others and posibly the brain)
#19
Posted 31 August 2006 - 07:57 AM


#20
Posted 31 August 2006 - 08:00 AM


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