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engine loses power while driving

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Old 12-19-2010, 09:52 PM
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Default engine loses power while driving

Just bought a 98 xj, it has terrible electrical problems, no speedometer / tach / radio lights - doesnt start some times with key, somebody rigged a push button directly to the starter that will start it when that happens - sunroof doesnt work, widows only work with the drivers buttons. any help on those would be great im going to check the other fuse box today......

but the only thing i really care about is every time you start it up, even if its warm like 500 feet down the road it will lose power, get power, lose power for about 30 secs, then it is good for the rest of the drive. I dont think its a motor or trans problem, any ideas to what it could be would be awesome, im not good with fuel injected vehicles, is there some kind of choke? im thinking its something electrical since it has the problems above. any ideas would be great.

thanks - jonathan

edit: if anyone could help me find the fuse digram for the passenger side box , that would be awesome, i dont have a manual.

Last edited by Phatwitaph; 12-19-2010 at 09:55 PM.
Old 12-19-2010, 10:16 PM
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No choke. Wonder if it's fuel pressure? Does it start easily, with the button anyway?
Old 12-19-2010, 10:35 PM
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I would recommend buying the CHILTON guide for your XJ, sounds like you have A LOT of things to fix on that puppy... Good Luck!

P.S.
You picked a good site for help also! We will do our best to help you out promise!!!!!!!
Old 12-19-2010, 10:55 PM
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yea im ordering a repair manual off ebay. but no the motor runs really good other than what i said before, always starts with key or button haha, even in this below freezing weather.
i was thinking it could be a fuel pump? but it seems like it has a pattern to it so that rules that out. i really dont know tomorrow when its daylight here im going to pull the fuses and check em ill post back.

oh yea and thanks for the welcome, so far i really like this website!
Old 12-19-2010, 11:28 PM
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How does it run when floored?
Old 12-19-2010, 11:37 PM
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Originally Posted by HCCAFan
How does it run when floored?
Like this..... WWWWWWWWWAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
Old 12-20-2010, 12:05 AM
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Originally Posted by X1994J
Like this..... WWWWWWWWWAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

Old 12-20-2010, 10:17 AM
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pretty much. it hauls *** and doesnt act up. but today i think i noticed something else about it, if you barely mash the gas when it is happening it will go. but if you mash it any harder than your foot resting on it , it acts up. Im just going to take it to the repair shop while its there ill get the guy to put my new tires on.
Old 12-20-2010, 10:20 AM
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Originally Posted by Phatwitaph
Im just going to take it to the repair shop while its there ill get the guy to put my new tires on.
that is one of the smartest things i have seen someone asking for help on this site say
Old 12-20-2010, 10:36 AM
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Let us know what they say.
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