Choke Problem?
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Choke Problem?
my 86 bronco two is acting funny on me and i think it is the choke but i am not sure. when it is cold outside it starts fine but when it warms up i have to crank on it for a while to get it to start. then when it does start it wmells like it is running really rich and you can smell gas. then while its idling it will bog down to the point where it seems like it is going to die then picks back up. im not sure what it is but like i said it sounds like the choke. ne help?
Tuned
Joined: May 2004
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[quote=bronco five o;6753177]my 86 bronco two is acting funny on me
Funny Ha Ha, or Funny like a Clown?
Does it run good going down the road? Does it smell like fuel? Maybe fuel pressure regulator. Not familiar with the fuel delivery that you have. More specifics may help some.
Funny Ha Ha, or Funny like a Clown?
Does it run good going down the road? Does it smell like fuel? Maybe fuel pressure regulator. Not familiar with the fuel delivery that you have. More specifics may help some.
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its got throttle body fuel injection and for a while i thought it might have been a leaky fuel injector but it does run fine when it is going down the road. but then when i give it gas it acts like it isnt getting enough air. it will bog down before picking back up. its really weird
Tuned
Joined: May 2004
Posts: 334
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its got throttle body fuel injection and for a while i thought it might have been a leaky fuel injector but it does run fine when it is going down the road. but then when i give it gas it acts like it isnt getting enough air. it will bog down before picking back up. its really weird
TommyJ
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Joined: Dec 2001
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From: UT
Technically, you have multi-port fuel injection rather than throttle body injection (the injectors are in the intake manifold -- not in the throttle body).
Your symptoms sound consistent with a bad fuel pressure regulator. One common failure mode for the FPR is for the diaphragm to rupture which allows unmetered fuel into the intake. 1st thing I'd probably do would be to run the engine and pull the vacuum line off of the FPR (FPR's near the rear of the intake manifold). If there's gasoline in that vacuum line, the FPR's bad.
If there's no gasoline in the FPR, then I'd probably do as tommyleea suggested and pull codes and check fuel pressure.
Your symptoms sound consistent with a bad fuel pressure regulator. One common failure mode for the FPR is for the diaphragm to rupture which allows unmetered fuel into the intake. 1st thing I'd probably do would be to run the engine and pull the vacuum line off of the FPR (FPR's near the rear of the intake manifold). If there's gasoline in that vacuum line, the FPR's bad.
If there's no gasoline in the FPR, then I'd probably do as tommyleea suggested and pull codes and check fuel pressure.
Post Fiend
Joined: Jun 2002
Posts: 13,873
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From: Atlanta GA
If your fuel filter is fairly new, you have good pressure, and the FPR is good, then it is most likely the TFI module going bad. If you had excess fuel dumping into the exhaust, the cat. converter would probably start to run really hot and turn almost red.
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