AboutRoland Finston Expertise I take questions about domestic Chrysler-product front wheel drive cars and minivans for the years 1982-2000 based upon my experience and shop manuals. I don't have detailed information (e.g. manuals) nor expertise for Jeeps, trucks, SUV's, import vehicles, or for years more recent than 2000.
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Experience I have been a do-it-yourself auto hobbyist for 5 decades, and most recently have been concentrating on the various Chrysler Corporation domestic front wheel drive cars and vans. I have shop manuals and wiring diagrams for many models for the years '83-'00, as well as rear wheel drive cars for the early 80's. I enjoy analyzing problems that other Chrysler enthusiasts are having and sharing my information. <BR><BR><B>Organizations belong to</b><BR>Group co-moderator of the Yahoo autos group The Chrysler LeBaron Club<BR>
Expert: Roland Finston Date: 5/4/2008 Subject: cold idle / turbo boost problem
Question Hi Roland,
First let me say you have helped me in the past, I hope you can help me again. I have a 1987 Chrysler Lebaron turbo vin# {e}. I was and may still have a vacuum problem, but in my quest for information and in trouble shouting the problems with the codes the car was giving me I found out that the car was running in what is called a limp in mode. After tracing out some wiring back to the logic module I found that connections at the logic module were intermittent due to oxidation on some of the pins.
Now to my questions, I repaired the connections with silicon grease made for electrical applications and now I am no longer getting TPS codes from the computer and the car is not in the limp in mode any more. {Is this silicone grease ok for the logic module?}
My problem is the car is now hard to start first thing in the morning and the idle is very rough until it warms up. the only code I am getting now is 45, keep in mind I may still have some vacuum issues. Thank you for your time and help..
Steven
Answer Hi Steven,
The silicon grease should be no problem as far as I know.
The poor mixture at start up could be due to a vacuum leak so I would keep on working on that issue. Other than that, the temp sensors are important for a good mixture so check that the coolant temp is reading 10,000 to 14,000 ohm when cold and that it drops to 700-1,000 ohm when warmed up. Similarly for the charge temp sensor. Those would be the first things to verify. The last thing to check is that the egr valve is not sticking ajar which will also lean out the mixture. So check the stem by moving it with the tip of a screwdriver inserted in the slot. It should close tightly via spring action. If not, spray the stem with WD-40 where it enters the valve body and move the stem until it is freed up.
Roland
