95 Astro fuel problem?
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ProMorpher 12-30-2005, 10:52 PM
I have a 95 Astro and it has recently started to run rough. I don't know the best terminology to use to describe it, but when I accelerate there are hiccups. That is, the van will begin to accelerate, stop for a second, and then resume accelerating. The problem stops instantly if I stop accelerating. On top of the surging or hiccuping during acceleration, the van has also struggled to start a few times in the past couple of weeks. Each time it eventually turned over, but only after several attempts at turning the key and mashing the accelerator the floor. Does anyone have any idea where I should start troubleshooting? Does this sound like a possible problem with the fuel system? Thanks for any help. MT-2500 12-30-2005, 11:01 PM How many mile since last tune up? Any check engine lights? Start with a good tune up. Fuel pressure and fuel filter also. MT CD Smalley 12-31-2005, 09:16 AM Start with a proper test of the fuel pressure. Sounds like you have a weak pump and or a leaking spider unit. e7ats 01-09-2006, 11:23 PM I'm with CD on checking your fuel pressure. There is a port on the back side of the engine to check the fuel pressure. Start and run, the pressure should come up over 50 PSI. Shut the engine off and the pressure should hold over 40 PSI for a long while. If it does not come up to 50 PSI or hold at 40 then it sounds like the Fuel pressure regulator on the spider injector unit is leaking. This will over fuel the enigine giving the symptoms you have. MT-2500 01-10-2006, 09:41 AM I'm with CD on checking your fuel pressure. There is a port on the back side of the engine to check the fuel pressure. Start and run, the pressure should come up over 50 PSI. Shut the engine off and the pressure should hold over 40 PSI for a long while. If it does not come up to 50 PSI or hold at 40 then it sounds like the Fuel pressure regulator on the spider injector unit is leaking. This will over fuel the enigine giving the symptoms you have. On a 4,3 W engine fuel pressure specs are 55/61 Do not leave home without it. Also you can have fuel pressure leak off at several places beside the fuel pressure reg. MT drew300 01-18-2006, 02:11 PM Just a thought. How about a sticking EGR valve? Related Links Enter the largest automotive community on the planet! |
