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Old 11-11-2009, 12:53 PM
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need help

i got a 89 bronco 2 2.9l and it starts fine when cold but if you try to start it after its warmed up and been running a while it wont fire. its getting fuel and has spark at the plugs. if you hold the gas to the floor and crank it will start sometimes but it takes a lot of cranking. i also replaced the module, and checked the timing it is on. it did have a clogged cat. i knocked out the inside of cat it still has the problem. any ideas thanks

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Old 11-12-2009, 11:16 AM
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On the old Hondas.The engine coolant temp sensor would cause that.Maybe this will give you a bump to someone with some more info on your bronco.


I had an 88 bronco II.I miss it.

And..........Welcome to the site.
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Old 11-13-2009, 06:51 AM
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thanks

thank you im gonna try the temp sens cause the gauge aint working right. so that might be it
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Old 11-13-2009, 07:21 AM
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When this happens, after cranking it for a while, then starting, is there a black cloud out the exhaust? If so, then your carb float might be leaking after shutdown, and flooding the motor. Just a thought!
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Old 11-13-2009, 08:07 AM
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yo

its fuel injected and after it starts it runs rough. the temp sensor fixed the gauge but still has problem
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Old 11-13-2009, 08:35 AM
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I have a fuel injected vette that has the same issue. I noticed the fuel pressure in the fuel rail bleeds off after shutting it off. This can be an inj. leaking the pressure off into a cylinder and causing an over rich start-up cond., or the pressure regulator is leaking back to the tank. I believe the pressure rails should hold pressure after the engine shuts down. You should probably have a gauge to check it. Also, it might need more gas at start-up from the enrichening inj. that it might not be getting. You could try giving it a little squirt of gas from a squirt bottle to see if that makes it fire right up. Any BLACK smoke at start-up?? Where in pa. are you?

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Old 11-13-2009, 05:22 PM
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thanks

im in sothern end lancaster county. im gonna get fuel pressure gauge and check that but i tried spraying starting fluid in it to get it to start and that did not work. its really frustrating. no black smoke.
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Old 11-13-2009, 05:55 PM
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Sounds exactly like a bad electric fuel pump. Fuel pressure too low. Even though it looks like your getting fuel, it's the pressure that count's on fuel injection. FoMoCo pumps are famous for this problem especially after 20 years. I was in denial for a long time but finally paid the 52 bucks for a fuel pressure tester only to find it was only pumping 7 of the 9-13 lbs. of pressure I needed for my throttle body. The thing that hurt my feelings was the pump only cost 30 bucks and a big PITA to change in the fuel tank. Could be a bad injector also being it run's rough. Mine didn't, but it wouldn't rev up any faster that an old VW.
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Old 11-14-2009, 07:07 AM
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any luck with the gauge? That should tell you if you need the pump.
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Old 11-14-2009, 06:10 PM
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good news

fuel pressure was fine, but i replaced the temp sending unit and that fixed it. so im happy.thanks for all the help.
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