lorenzo Posted September 11, 2015 Share Posted September 11, 2015 (edited) I can't seem to figure out what is causing my car to bog, it starts out driving great then a short time later it starts hesitating stalling and fading out. Things I did after having it looked at by a mechanic: Fuel pump, used one so hopefully I did not get a bad one. Fuel Pressure Regulator, this was a new part. Things I have tried thinking it may help: Fuel filter Water Temperature Sensor changed 3 fuel injectors to new ones, had a difficult time removing the old ones to help get the fuel rail off when doing FPR. I had them so I said why not use them. Anyone had a similar issue and solved it? I was thinking I may just install an aftermarket fuel pump. Is the fuel dampener required if I do? Edited September 11, 2015 by lorenzo Quote Link to comment Share on other sites More sharing options...
NewZed Posted September 11, 2015 Share Posted September 11, 2015 I can't seem to figure out what is causing my car to bog, it starts out driving great then a short time later it starts hesitating stalling and fading out. Does this mean it runs well cold, then runs poorly after it warms up? There's no time-frame to work with, besides "starts out driving" and "then a short time later". Quote Link to comment Share on other sites More sharing options...
lorenzo Posted September 11, 2015 Author Share Posted September 11, 2015 Does this mean it runs well cold, then runs poorly after it warms up? There's no time-frame to work with, besides "starts out driving" and "then a short time later". Yes It drives well for about 5 minutes then it starts acting up, like it is starving for fuel. That is why I changed the Water Temperature Sensor, I thought that was the culprit. Changed the Temperature gauge sensor too while I had the fluids out of the rad. Quote Link to comment Share on other sites More sharing options...
NewZed Posted September 11, 2015 Share Posted September 11, 2015 Have you measured resistance of the coolant temperature sensor circuit at the ECU connector and compared it to the chart? How do you know the new one is even connected to anything? Quote Link to comment Share on other sites More sharing options...
lorenzo Posted September 11, 2015 Author Share Posted September 11, 2015 Have you measured resistance of the coolant temperature sensor circuit at the ECU connector and compared it to the chart? How do you know the new one is even connected to anything? I will try this when I get the chance. Another thing I noticed is when I open my gas cap there seems to be little if any pressure released, I remember it would usually pop and exhale a lot of air when I would open it before. Quote Link to comment Share on other sites More sharing options...
Phantom Posted September 12, 2015 Share Posted September 12, 2015 Pull your plugs and see if they have a clean burn pattern on them or if maybe they are running rich - black and kind of wet looking. Quote Link to comment Share on other sites More sharing options...
lorenzo Posted September 12, 2015 Author Share Posted September 12, 2015 (edited) Pull your plugs and see if they have a clean burn pattern on them or if maybe they are running rich - black and kind of wet looking. I tried this only one had a bit of darkness the others were clean and dry looking. I am wondering if there is a problem with my carbon canister, or spark plug wires, I will check their resistance tomorrow. Edited September 12, 2015 by lorenzo Quote Link to comment Share on other sites More sharing options...
lorenzo Posted September 16, 2015 Author Share Posted September 16, 2015 Okay something new, I checked the wires and resistance is good on all 6 wires. When I start the car and leave it idling and revving there is no bogging whatsoever, even left it for about 30 minutes. This tells me it is not temperature related. It is only when I start driving the car that the bogging starts, could this be a problem with the AFM? Possibly the flap? Quote Link to comment Share on other sites More sharing options...
Phantom Posted September 16, 2015 Share Posted September 16, 2015 You may have a vacuum issue, also. Does the car still have its original vacuum accumulator bottle? Quote Link to comment Share on other sites More sharing options...
lorenzo Posted September 17, 2015 Author Share Posted September 17, 2015 You may have a vacuum issue, also. Does the car still have its original vacuum accumulator bottle? Hi Phantom, are you referring to the Carbon Canister? If you are then yes it is still original. Quote Link to comment Share on other sites More sharing options...
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