Won't start now

Tiny
PRELUDE2000
  • MEMBER
  • HONDA PRELUDE
I drive a 1991 honda prelude with 175k mi. It has a 2.05 FI engine. While driving I noticed a lack of power. Its was driven 50mi. Before it would no longer start. While driving it in the 50mi window 60 mph was top speed. The check engine light came on. The codes were 43 and 9. When I returned home after the 50 mi. The engine would not spin above 1000rpm and the check engine light no longer flashed any codes. I checked the cylinder sensor. Its ok. I was told that sometimes the oxygen sensor will report an error if the engine is not running efficiently. There is no noise associated with this problem, it has a new air & fuel filter and all the fluids are up. It has spark & fuel at the fuel filter. The cam is moving along with the crank shaft. Please help
Thursday, January 4th, 2007 AT 3:09 PM

8 Replies

Tiny
BRUCE HUNT
  • MECHANIC
  • 3,754 POSTS
Hi, I hope I can help you out

No I cylinder postion sensor is alright because?

You say fuel is ok to the fuel filter. Fuel because of gravity will seem like it has pressure at the fuel filter, but you want to know what the pressure is. I would get a reading from a fuel pressure gauge.
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Thursday, January 4th, 2007 AT 4:40 PM
Tiny
PRELUDE2000
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.
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Friday, January 5th, 2007 AT 11:15 AM
Tiny
PRELUDE2000
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I own a Honda tech manual and tested the #1 cylinder senor by checking the resistance( approx 750ohms) and continuity to ground did not exist. I also checked to see if there was fuel pressure at the fuel filter outlet. I did not get a reading yet, but there is a fountain when the key is turned on, at the fuel pressure tap screw on the inlet to the filter.
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Friday, January 5th, 2007 AT 11:23 AM
Tiny
BRUCE HUNT
  • MECHANIC
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Good job on the sensor and a fountain indicates that the fuel is flowing but really doesn't confirm pressure that is sufficient.
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Friday, January 5th, 2007 AT 2:01 PM
Tiny
BRUCE HUNT
  • MECHANIC
  • 3,754 POSTS
I cut this from another posting:

You need to install a manual fuel pressure gauge to verify pressure. Is there a fuel press regulator? If it is on the fuel rail unhook the vacuum line to check for raw fuel in the vacuum line. When the press gauge is on the car watch how fast it goes up when the key is turned on, and see how fast it falls with the key off if it falls at all.
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Friday, January 5th, 2007 AT 4:39 PM
Tiny
PRELUDE2000
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Hello Mr. Hunt:
I've been away but now back to original problem. I haven't check fuel presssure yet( just purchased pressure tester( difficult to find). But I did check for leaks at the regulator ( no leaks). Also, I checked cylinder compression. It is as follows:
#1 115psi
#2 90psi
#3 90psi
#4 115psi
Looks a bit low. I was talking to an employee at the tool shop from where I purchaced the fuel pressure tester. He mentioned to me that the problem could possibly be a valve adjustment issue ( valves sticking). If so, what are the ramifications of misadjusted valves?
Thanks again for your time
Prelude2000
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Thursday, January 18th, 2007 AT 8:33 PM
Tiny
BRUCE HUNT
  • MECHANIC
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If the vehicle has the pressure you indicate that isn't fantastic but it is not that poor either. Still does not start right?
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Thursday, January 18th, 2007 AT 9:28 PM
Tiny
PRELUDE2000
  • MEMBER
  • 5 POSTS
Hi Bruce:
Just wanted to let you know, I found the problem. While checking on the valve adjustment, I noticed that the two cam shafts would not line up. Upon futher inspection, while spining the engine over I found 2 teeth missing in the Timing belt. So the mystery of the cylinder senor code on the onset of the problem is also solved. Thanks for trying to help. I hope your still around the next time I need some back up.
Prelude2000
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Monday, January 22nd, 2007 AT 7:07 AM

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