Skip the auto shop - Our mechanics make house calls

Q: Difficult start with hot engine, shutting off at start - 1990 Pontiac Grand LeMans

asked by on

When I attempt to start the car with cold engine, it starts up immediately. However, if I drive the car for a while and park it briefly, it cannot be restarted right away. It would start, but shut off quickly. When the engine is warmed up, it takes several tries to get it started. I had the codes read and several appeared. These include: code 15 coolant temperature low; code 42 electronic spark timing issue; 32 EGR failure; and 44 engine running lean. What do you suggest I should do first?

A: Hello there, thanks for writing in. You may...

Hello there, thanks for writing in. You may have a few different things going on with your 1990 Pontiac Grand LeMans. These codes are most likely all related and have a few common causes. The most likely causes for this would be a stuck, open, or faulty thermostat, coolant temperature sensor, vacuum leak, spark plugs, exhaust leak, or an oxygen sensor. A certified automotive technician such as one from YourMechanic will perform a check engine light is on inspection and diagnose the fault performing any repairs required.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Can an open gas cap which causes the Check Engine Light to come on cause the car to not start and the ECM to appear bad?

Yes, there are a lot of things a bad gas cap or open gas cap can affect. If you don't have a gas cap then you may be experiencing issues with debris getting into your tank or fuel filter and...

Q: Engine overheats, heater blows out cold air, coolant boils in radiator

Sounds like multiple problems here. I would first correct the "no heater" scenario. This is likely the heater control valve not allowing what is clearly hot water into the heater core. The reason for correcting this first is that it...

Q: U1262 scp data link fault

The code U1262 point out a communication fault between the vehicle modules and a scanner. It may be best to visit your local dealer to find if one of the vehicles control modules has failed. In some cases this can...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.