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Matt
Matt, Mechanical Engineer
Category: Toyota
Satisfied Customers: 20591
Experience:  BEng, Repaired my own cars and others for 20 years, worked in Formula 1 for 10 years
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I have 1988 corolla gts 1.6. Car stalls when ac is on during

Customer Question

I have 1988 corolla gts 1.6. Car stalls when ac is on during or coming to a stop. Cleaned the carburator already. Changed the spark plugs. Still stalls.
JA: How many miles are on the car? When did you last change the plugs?
Customer: 181831 miles. Yesterday
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: I'm trying to fix it myself.
JA: Anything else you think the mechanic should know?
Customer: I had a meachanic cleaned the carburator first but after 2 days it's stalling again.. I notice this happen when weather is hot.
Submitted: 4 months ago.
Category: Toyota
Customer: replied 4 months ago.
What other repair can i do?
Expert:  Matt replied 4 months ago.

Hello

I'd check that ignition advance is set correctly and that the you have no vacuum leaks after the carb

this should be set to 10 degrees before TDC with a warm engine and if thats OK then the best way to locate a leak is to have the engine running and warm and then spray lighter gas /propane around each joint in turn. If the engine rev's up you've found your leak.

Now you might think that spraying lighter gas around a hot engine isn’t wise, however the flash /ignition point of gas is about 400°C so you need a naked flame or spark to set it off and I’ve used this method for many years without incident.

Work your way through each possible joint one at a time and you should find it. I use a slightly flattened piece of brake pipe and some rubber hose from the can of lighter gas to provide a spraying 'wand' and allow a direct blast of gas into each area, especially those difficult to reach with large implements.

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