thekauz Posted January 13, 2013 Share Posted January 13, 2013 I have a 91 Loyale that is the love of the family. Recently it has become very difficult to start. You have to bury the accerator pedal and once it catches it runs very rough until it warms up. Once it warms up its fine.I have replaced the fuel filter and checked to make sure the fuel pump is working(it is). The only other thing I have noticed is once it catches and starts to run from a cold engine you smell fuel from the exhaust until it warms up. Any idea's. Quote Link to comment Share on other sites More sharing options...
MilesFox Posted January 13, 2013 Share Posted January 13, 2013 I would guess that either the idle air control valve is stuck closed, or the engine temp sensor has failed causing the IAC to not operate properly. Quote Link to comment Share on other sites More sharing options...
rain_man_rich Posted January 13, 2013 Share Posted January 13, 2013 I'd second the coolant temperature sensor. Same thing I experienced once on my Loyale Quote Link to comment Share on other sites More sharing options...
thekauz Posted January 13, 2013 Author Share Posted January 13, 2013 (edited) The temp sensor is the one on the thermostat housing correct? Where is the idle air control valve located? The temp sensor near the therostat is only like 20 bucks so if thats the correct sensor I 'll start their first and replace it. This Loyale wagon was gift from my Uncle, it was his "extra" car and was garage kept all its life until a few years ago when he gave it to my wife . And it just went over 100K. This cars a keeper Edited January 13, 2013 by thekauz More thoughts Quote Link to comment Share on other sites More sharing options...
rain_man_rich Posted January 13, 2013 Share Posted January 13, 2013 Just a thought: you getting any codes? Quote Link to comment Share on other sites More sharing options...
MilesFox Posted January 13, 2013 Share Posted January 13, 2013 the engine temp sensor is the 2 wire unit with the green plug for the ecu. the single spade sensor is for the dash gauge. The IAC is located on the throttle body and has the hose going between it and the intake boot. Soak some sea foam in that piece. There are plenyt of write ups for servicing the IAC Quote Link to comment Share on other sites More sharing options...
thekauz Posted January 14, 2013 Author Share Posted January 14, 2013 I found the single spage sensor on the theremostat housing, where do I locate the two wire sensor mention by MilesFox in his post? Quote Link to comment Share on other sites More sharing options...
kerandt Posted January 14, 2013 Share Posted January 14, 2013 Look on the thermo housing, lower, same side as the single spade connector. As stated green plug with two wires. Quote Link to comment Share on other sites More sharing options...
86 Wonder Wedge Posted January 14, 2013 Share Posted January 14, 2013 Best place to buy is online as most parts houses want 100+ for the CTS (coolant temp sensor). Rockauto.com is my favorite as they have good prices on SMP (standard motor products) which IMO is a good line. (SMP is also BWD, fyi) What you could do as well is unplug the CTS (green, two wire sensor just under the thermostat goose neck) and see if it changes how it starts/runs. Quote Link to comment Share on other sites More sharing options...
thekauz Posted January 14, 2013 Author Share Posted January 14, 2013 I'll try disconnecting it when i get off work and see what happens. The sensor is a little pricey but from all the threads in forum's I have read it sounds like a strong possibily that its that Sensor. Quote Link to comment Share on other sites More sharing options...
thekauz Posted January 19, 2013 Author Share Posted January 19, 2013 Haven't had a chance to test the sensor yet. It was raining For days and I'm just getting over the flu. Does any one know if the TCS on other year subarus Will fit my 91? I can't imagine a different Sensor for every Model and year. But I'm headed to the boneyard Monday to look For a Subby. Quote Link to comment Share on other sites More sharing options...
MilesFox Posted January 20, 2013 Share Posted January 20, 2013 88 and up spfi engines will be the same. 87 and 86 years have a different plug. Quote Link to comment Share on other sites More sharing options...
thekauz Posted January 20, 2013 Author Share Posted January 20, 2013 I'll let you guys know how it goes at the boneyard tomorrow. Quote Link to comment Share on other sites More sharing options...
ivantruckman Posted January 22, 2013 Share Posted January 22, 2013 I was able to clean the scale off of my sensor, in this case it made the car run and idle . if you have a volt ohm meter you can check the sensor, I used a pan of water on the stove , as it heated the resistance changed . not sure of the specs for the sensor . Quote Link to comment Share on other sites More sharing options...
thekauz Posted January 25, 2013 Author Share Posted January 25, 2013 Thats certainly worth a try. I'm still waiting for the weather to cooperate though. Quote Link to comment Share on other sites More sharing options...
thekauz Posted June 20, 2013 Author Share Posted June 20, 2013 It was the Idle air control valve1 replaced that and its running pretty well. Still likes to be warmed up before she's driven though. Now to figure out what I should go ahead and replace before it fails.... Quote Link to comment Share on other sites More sharing options...
SmashedGlass Posted June 20, 2013 Share Posted June 20, 2013 That's an old Sube.... I always let mine warm up for a few minutes, especially in colder weather where I've let it go until it idles down on it's own before moving it. Run beautifully, if you just let them 'wake up' at their own speed. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.