Stalling, no power --- RESOLVED!!!
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Joined: Aug 2004
Posts: 75
Stalling, no power --- RESOLVED!!!
FInally (I hope) my problem is resolved.
First, 91 SE, manual transmission, 230K km. The car would suddenly have no power while driving. Later, I narrowed it down to a (usually) warm engine, pushing hard with a load (like running up a hill), and when letting the rpms drop to between 1500 and 3000. It would sometimes idle roughly. If I stopped and waited about 5 minutes, the engine would 'catch it's breath' and I could run it all day without problems.
Checked: EGR, no effect. Had Nissan dealer check computer codes - he said there were none, and was convinced that the problem was MAF. I cleaned up connections to MAF with contact cleaner and toothbrush, cleaned up ground connection to engine block, fixed a loose vaccum hose connection - no effect.
Checked computer - had code 33 (!). Followed Haynes manual instructions, disconnected the O2 sensor (what a pain in the arm that was!), and the car ran fine. Reconnected, the car ran like a pig.
Took it to Nissan - the checked out the O2 sensor, and replaced it. The car is great again!
Thanks to everyone here (and other boards) that helped me understand and resolve the problem.
Michael
First, 91 SE, manual transmission, 230K km. The car would suddenly have no power while driving. Later, I narrowed it down to a (usually) warm engine, pushing hard with a load (like running up a hill), and when letting the rpms drop to between 1500 and 3000. It would sometimes idle roughly. If I stopped and waited about 5 minutes, the engine would 'catch it's breath' and I could run it all day without problems.
Checked: EGR, no effect. Had Nissan dealer check computer codes - he said there were none, and was convinced that the problem was MAF. I cleaned up connections to MAF with contact cleaner and toothbrush, cleaned up ground connection to engine block, fixed a loose vaccum hose connection - no effect.
Checked computer - had code 33 (!). Followed Haynes manual instructions, disconnected the O2 sensor (what a pain in the arm that was!), and the car ran fine. Reconnected, the car ran like a pig.
Took it to Nissan - the checked out the O2 sensor, and replaced it. The car is great again!
Thanks to everyone here (and other boards) that helped me understand and resolve the problem.
Michael
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Originally Posted by RyderMax
FInally (I hope) my problem is resolved.
First, 91 SE, manual transmission, 230K km. The car would suddenly have no power while driving. Later, I narrowed it down to a (usually) warm engine, pushing hard with a load (like running up a hill), and when letting the rpms drop to between 1500 and 3000. It would sometimes idle roughly. If I stopped and waited about 5 minutes, the engine would 'catch it's breath' and I could run it all day without problems.
Checked: EGR, no effect. Had Nissan dealer check computer codes - he said there were none, and was convinced that the problem was MAF. I cleaned up connections to MAF with contact cleaner and toothbrush, cleaned up ground connection to engine block, fixed a loose vaccum hose connection - no effect.
Checked computer - had code 33 (!). Followed Haynes manual instructions, disconnected the O2 sensor (what a pain in the arm that was!), and the car ran fine. Reconnected, the car ran like a pig.
Took it to Nissan - the checked out the O2 sensor, and replaced it. The car is great again!
Thanks to everyone here (and other boards) that helped me understand and resolve the problem.
Michael
First, 91 SE, manual transmission, 230K km. The car would suddenly have no power while driving. Later, I narrowed it down to a (usually) warm engine, pushing hard with a load (like running up a hill), and when letting the rpms drop to between 1500 and 3000. It would sometimes idle roughly. If I stopped and waited about 5 minutes, the engine would 'catch it's breath' and I could run it all day without problems.
Checked: EGR, no effect. Had Nissan dealer check computer codes - he said there were none, and was convinced that the problem was MAF. I cleaned up connections to MAF with contact cleaner and toothbrush, cleaned up ground connection to engine block, fixed a loose vaccum hose connection - no effect.
Checked computer - had code 33 (!). Followed Haynes manual instructions, disconnected the O2 sensor (what a pain in the arm that was!), and the car ran fine. Reconnected, the car ran like a pig.
Took it to Nissan - the checked out the O2 sensor, and replaced it. The car is great again!
Thanks to everyone here (and other boards) that helped me understand and resolve the problem.
Michael
Big surprise there. Always DIY over a Nissan dealer.
Thread Starter
Member
Joined: Aug 2004
Posts: 75
Mileage - don't know yet, but I keep pretty close records. I'll let you know how it was and where it's going.
DIY - yeah, but I had hoped I wouldn't have to get neck deep with a car I've only owned 10 days. And, I hoped the dealer was competent. [sigh]
M
DIY - yeah, but I had hoped I wouldn't have to get neck deep with a car I've only owned 10 days. And, I hoped the dealer was competent. [sigh]
M
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