Gauges jump at startup
Gauges jump at startup
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New User
Joined: Jun 2002
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Gauges jump at startup
My 99EXP-EB has started to do something funny when I first start the engine in the mornings. As normal all the lights in the dash come on, then when I start the engine the tach and speedometer needle goes to the max (all the way to the opposite side) and the return back to continue to function normally.
I do not know what could cause this behavior on my tach and speedometer, those anyone have experience something like this ?.
I will appreciate any help or suggestions.
Thank you
Roberto.
I do not know what could cause this behavior on my tach and speedometer, those anyone have experience something like this ?.
I will appreciate any help or suggestions.
Thank you
Roberto.
Logistics Pro
Joined: Oct 2000
Posts: 3,960
Likes: 5
From: All over Texas
Gauges jump at startup
The gauges will do this each time the PCM is reset. I couldn't imagine why your PCM would be resetting by itself....usually takes disconnecting the battery for a period of time.
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New User
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Gauges jump at startup
Thank you Jim for your reply.
I have a theory that what is doing this is my 3 year old battery. Perhaps at the first start is taking all the juice to start the engine and the PCM reset it self. Just a theory....
I have a theory that what is doing this is my 3 year old battery. Perhaps at the first start is taking all the juice to start the engine and the PCM reset it self. Just a theory....
Senior User
Joined: Jan 2002
Posts: 176
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From: TEXAS!
Gauges jump at startup
FTE Rocks!!! I had the same problem and was about to take advantage of the extended warranty then I read this string and that along with noticing that the Expy was getting a little hard to start. I replaced the Battery and viola! The guages don't jump any more at startup. Whohoo!!!
99 F250SD EC 5.4L 3.73 285 BFG/ATs...
99 Expy EB 5.4L
99 F250SD EC 5.4L 3.73 285 BFG/ATs...
99 Expy EB 5.4L
New User
Joined: Dec 2002
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Gauges jump at startup
sweet, Mine does the SAME thing.. sometimes the windshield wipers run once at startup as well, very very confusing, esp if you have a lil bird dookey your trying not to smear on the windshield!!
I will try changing the battery.. Thanks guys.. YOU ROCK!
I will try changing the battery.. Thanks guys.. YOU ROCK!
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Cross-Country
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Gauges jump at startup
I have this same problem and I am curious about what harm if any this does to PCM or other systems. Does this mean that the PCM has to relearn my driving habits every time I start the truck. I will be getting a new battery to see if that stops the problem
Freshman User
Joined: Jan 2003
Posts: 43
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From: Los Angeles, California
Gauges jump at startup
It didn't seem to harm any systems that I can tell. Whether it re-learns or not is sort of irrelevant, considering after your new battery it will relearn hopefully for the last time.
AG
AG
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