Question about 1991 Honda Accord
Hi, i saw your very helpful fix to the guy with the 91 accord that was shuddering at a low speed.. Its happening to mine too at around 1800 RPM..
I saw in your reply, you mentioned checking to see if the exhaust was touching the body, and mine is.. but why would that cause it to shudder?? I was thinking it was more likely the auto transmission slipping, but id like to hear why the exhaust might be to blame (as im no genius mechanic, id hate to switch out trans. for nothing..)
the car has 316000K on it, so not sure how much work is worth putting into it, anything you could suggest would be a great help..
thanks a lot, Jordon (email@example.com
Clogged egr ports have caused my 91 Accord to shudder at that specific rpm. My mechanic said my car was cursed and haunted since he changed so many parts and still couldn't figure out what was causing it to shudder like that, at such a specific range. I found out that the egr opens at that range and floods the one free cylinder(all the other cylinders ports are carbon clogged and don't get egr flow to them) with too much exhaust gas, causing a misfire in that one cylinder. I had to do the "drill out the egr ports and clean the intake of carbon build-up" fix to get my engine to stop shuddering. It's really a misfire, but seems like a shudder at that engine speed.
Posted on May 17, 2009
Well since you bought the car obviously used, it may have been worked on by a back-yard mechanic like myself, and an enexperienced person while replacing a timing belt might forget to set the bolt to line up the harmonic balancers, which might be a cause to your problem, , another thing to check is if it's firing correctly, check to make sure your getting proper spark from your spakr plug wires, and also make sure that your plugs are gapped to specs... and as to the previous guys request, what are the guage readings when accelerating and the issue happens?
Posted on Jan 25, 2009
Jordan, it's possible it's the tranny, but try this, accelerate from a stop, watch the rpms before , during, and after the 'shuddering'. Does the tachometer steadily go up to 1800 rpms, and continue on smoothly, and at the same time the speedometer shows a smooth steady increase? If the trans. was slipping, the rpms would smoothly rise, (of course, u have to take into account that each shift to another gear, the rpms will drop, then increase, but it should be a smooth change) but the speedometer would not, it would stop rising, or noticeably slow down. With the high miles it has, it's gotta be tired and many components worn, difficult to determine exactly what, especially by email. It could be tires need to be balanced, wheel bearings worn, suspension components worn, motor mount issue, and yes, even the trans. Your description doesn't make it sound like it is a major issue as far as the cars performance, and again, based on the mileage, the bargain price you paid, I wouldn't replace the trans. unless this problem got worse, and had more factors pointing to a trans problem. I wish I could pinpoint the exact problem, but unless the symptoms worsen, or change, enjoy your honda. Let me know if u think of anything else that might be significant, or any new symptoms down the road.
Posted on Oct 31, 2008
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