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Engine cuts out occasionally. At low speed, medium speed, high speed. Some time it burps 2 or 3 times then won't do it the rest of the day. Another day it will miss every 5 minutes or so.

2000 GMC Safari. 207,000 miles. Engine rebuilt 25000 miles ago. Transmission had a shift kit put in it 20000 miles ago.

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May be a bad ignition switch. Do not hang a bunch of trinkets and keys from your key ring. 2 keys at most. Perform an OBDII scan before doing any repairs. Let your scan print out be your guide to any parts replacement.

Posted on May 18, 2017

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{: ) You didn't mention the model of your vehicle. Anyway, we can try some cooling system basics.
You can begin checking with the things that keep the engine cool.
1. The coolant. Are you using plain H2O? Check the coolant level and also look for signs of coolant leaks.
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4. Water pump. Is it noisy? Have you checked the belt? It may be old and cracked, better replace it. If a thermostat is stuck, coolant won't circulate and engine will heat up fast to undesirable levels.

How about the other things that add more heat to the engine?
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Looking at buying a 2001. What do I look out for? It has 90,000 miles. Timing Chain? Transmission? Headlamp covers? Electrical?


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Just got H 2 2005 4 buttons 4 the 4 wheel drive


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It could possibly be the switch. Many automotive a/c blowers have a relay to engage the highest fan speed because the high current required will necessitate the use of heavy wiring to and from the blower motor and a heavy duty switch. Check for a high-speed relay and also there might be a circuit breaker in the blower system.

Hope this helps, rhais

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Dies when idling, does better with a/c on, but still dies


this is your problem:

Here are the most common causes of surges, stalls at stops, low erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake

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