Chrysler Repair: 1985 chrysler newyorker turbo problem, chrysler newyorker, vacuum line

Question
hi roland i recently got my car out of the shop they put in a new head gasket and since that my car acceleration has been significantly slower. my car will pick up eventually but it is burning double the amount of gas, the econ on the car is always at 25L/100km when it use to be at 13L/100km  anythoughts will be helpful. thank you

Answer
Hi Julian,
The difficulty with an '85 is that there is no simple way to get the fault codes out of the controller memory, unless you have access to a Chrysler diagnostic readout box I code reader. It might work with the next generation DRB II if you can find a shop/dealer that has one. I would pursue that course because without the fault codes there is no smart way to begin to find out what is wrong.
However, it may be the case that if you turn the ignition key:"on-off-on-off-on and leave on" doing that in 5 seconds or less that the codes may be read out using the power loss light which should remain 'on' then begin to flash, pause, flash, etc. Count the number of flashes before each pause, then repeat the process to be sure of an accurate set of counts. Then write back and tell me the counts in the order of appearance and we'll go from there.
I would wonder if all the vacuum connections were replaced properly? Particularly there is a vacuum line from the logic module in the cabin that goes through the firewall and should be connected to a nipple on the throttle body. See if that line is connected and air tight.
Roland
PS Use the 'thank/rate' tab below to get back to me, without having to wait for me to be available to take a question. There is a space for comments, to which I will reply. While you are there, if this answer has been helpful please consider entering a "yes" where you see the "nomination?" item.

Hi Julian
I was wondering how the acceleration issue worked out. Please let me know  by using the 'thank/rate' tab below. While you are there, if I might ask a favor: where it asks about a 'nomination for expert of the month' I would appreciate your entering a 'yes'. I am in a close race for that honor so every vote counts!
Thanks
Roland