85 turbo - coughs on heavy accel load

frenchy · 2005-01-19T20:40:32+00:00

My 1985 lebaron Town and Country convertible runs fine around town, noidling problems, good get up and go. Only problem is if I happen tohave to really push the motor, like trying to accelerate up a steepgrade too quickly, or pass somebody and almost floor it, the motor willhesitate and lose power momentarily, as if the gas or ignition hasalmost been cut off, over and over again, till I lift off the gas a bitand accelerate slower. Sort of a "chug" where power drops out likeit's going to die, then comes back quickly. What are the possiblecauses of this? If the knock sensor detected enough knock could it dothis (I don't really hear knocking but I mostly ride with top down.)Maybe I should try a tank of premium first. Timing is set at Calif.factory setting. I think I changed the big fuel filter about 50K ago.Could it be dirty again and cause this? thanks!

Jan 19, 2005 24 Replies

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N8N 21 years ago

indicates

Thanks! That's more helpful than you know; a J12Y is the stock plug for a Studebaker R-series (Avanti high compression) motor. Guess what else I have laying around :) Makes life easier when you aren't near a "good" parts store and the counter guy claims he needs an application, he can't just look up a J12Y (and why not?) but of course his computerized thingy only goes back to 1969 or whatever.

Now that I think about it, I don't think I've ever replaced the plugs in any MoPars, just cleaned them and kept on rolling. My MoPar-owning phase coincided nicely with my "broke as heck" phase :(

nate

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Daniel J. Stern 21 years ago

More horseshit from damnnickname. There is no way a spark plug can alter the "timing of the power module".

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frenchy 21 years ago

Just for information - the wastegate control solenoid that allows vacuum to go to the wastegate - exactly when does the computer turn that on, or off? Why does it need to control when vacuum can get to it or not, I mean, what would happen if the vacuum was just routed to the wastegate all the time instead of on and off? thanks

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maxpower 21 years ago

If you were to route vacuum to the waste gate all the time you would loose the boost. here is a good site that may answer any questions you have

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maxpower 21 years ago

Now there is someth>

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