d4 light flashing erratically
#1
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d4 light flashing erratically
Hello,
I currently own a 2000 Honda Civic and am having some weird problems with my transmission. In the past couple of days while driving 20+ miles, my D4 transmission light will begin flashing erratically. Sometimes it will just flash once or twice, or it will continuely flicker on and off for a second or two. The duration of the flashes does not seem constant either. Due to it being so erratic, it doesn't seem like it is flashing out a code. However, when it is erratically flashing for an extended period of time (10-20 seconds), my RPMs will also fluctuate in the range of +/- 150 RPMs of whatever I was initially at.
While making some small trips to and from work, which is about 7 miles, I don't notice anything wrong. It mainly happens on longer trips.
I was wondering if anyone has any idea what could be the problem. I was thinking of maybe a wiring issue, such as a loose wire on the transmission causing the D4 light to flicker, but not sure how that would factor in with actual RPM fluctuations.
I appreciate any insights with this issue. Thanks!
I currently own a 2000 Honda Civic and am having some weird problems with my transmission. In the past couple of days while driving 20+ miles, my D4 transmission light will begin flashing erratically. Sometimes it will just flash once or twice, or it will continuely flicker on and off for a second or two. The duration of the flashes does not seem constant either. Due to it being so erratic, it doesn't seem like it is flashing out a code. However, when it is erratically flashing for an extended period of time (10-20 seconds), my RPMs will also fluctuate in the range of +/- 150 RPMs of whatever I was initially at.
While making some small trips to and from work, which is about 7 miles, I don't notice anything wrong. It mainly happens on longer trips.
I was wondering if anyone has any idea what could be the problem. I was thinking of maybe a wiring issue, such as a loose wire on the transmission causing the D4 light to flicker, but not sure how that would factor in with actual RPM fluctuations.
I appreciate any insights with this issue. Thanks!
#2
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Re: d4 light flashing erratically (aglswapbuffers)
I posted this pretty late last night, so here is a small bump so hopefully more people will be able to see this this morning. Thanks.
EDIT:
I think I should also mention that this tends to happen between 3k and 3.5k RPM going around 65 miles per hour on the freeway. I am not sure if this is important; but I havn't seen my car do this at slow speeds.
EDIT:
I think I should also mention that this tends to happen between 3k and 3.5k RPM going around 65 miles per hour on the freeway. I am not sure if this is important; but I havn't seen my car do this at slow speeds.
#3
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when the D4 light flashes, it is giving you a transmission code. there is something wrong with the transmission somewhere. look in the helms for all the codes and troubleshooting trees.
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Re: (littleredcivic)
Thanks for the reply. As I mentioned in the original post though, it flashes way too erratically for it to be giving me a transmission code. I once had a loose wire going to the tranmission which caused the D4 light to blink so I know what kind of blinking to look for. The flashing/flickering is too quick and random to be a code which has me stumped. Then again, it is intermittent. I drove a bit over 20 miles today and it ran great... no weird D4 light behavior or RPM fluctuations.
I have a couple of long road trips ahead of me and I just want to make sure my car is not going to break down on me. However, due to the symptons, it has been hard to troubleshoot.
I have a couple of long road trips ahead of me and I just want to make sure my car is not going to break down on me. However, due to the symptons, it has been hard to troubleshoot.
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