Question about 1995 Chevrolet Beretta

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Intermediant high temp on gauge

My 3.1 in a 1995 Beretta temp. gauge goes almost to 3/4 for a few seconds and returns to 1/2 for a short period and then returns to 3/4. I drive on the open highway to work and it does this for 25 miles. the fan never comes on and it never boils. I thought it might be a thermostat but this made no differance.

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  • hopper_59k Jun 25, 2009

    I would like to replace the sending unit but having a problem finding it.

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Same thing happened to my beretta. its the heater core. they had to take out the entire dash to get to it. cost about $400 if u dont do it yourself. i had my fan fixed first and realized it wasnt the problem. i had to carry around a few gallons of water before i got it fixed or my car would overheat.

hope this helps

Posted on Dec 23, 2008

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Thats caused by air in the system ... you have bled out the air..... on top of motor passenger side you will see a black tube ...on top of it what looks like a small bolt head thats the bledder...open it untill intill antifreeze comes out. you might have to do a couple times to get all the air out..be careful if engine is hot...this should take care of the problem.....hope this helps......

Posted on Dec 11, 2008

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This is an indication the radiator system is LOW ON COOLANT !!!!!!!!!!!!!
However I see you might have already changed the thermostat, so next you need to change the temp sending unit located somewhere in the block or intake manifold.

Posted on Dec 11, 2008

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With vehicle cold I put it in gear and go maybe 100' and temp gauge is topped out. When I stop the temp returns to normal in 3 seconds.


the temp gauge sends the power from the gauge to the sender unit which is a variable ground. That means that as the coolant heats up , the resistance in the sender is decreased and the current through the gage increases ans so the needle goes up
when that wire is shorting out some where the gauge will go to hot and when that short is removed the needle comes back down to cold
so that means that you will need to trace the wire along for where it is rubbed through or get an accredited auto electrician in to find the fault

May 11, 2016 | Cars & Trucks

Tip

Detroit Diesel Fault Codes


Code Description DDEC V Circuit
11 P 187 4 Chain PTO. Short circuit in the power
11 P 187 7 control system PTO wrong answers
12 P 187 3 Chain PTO. Short circuit in the ground
13 P 111 4-level circuit antifreeze. Short circuit in the ground
13 P 111 6 second-level circuit antifreeze. Short circuit in the ground
14 P 52 3 circuit coolant temperature intercooler. Short circuit in the power
14 P 110 3 circuit temperature antifreeze. Short circuit in the power
14 P 175 3 Chain oil temperature. Short circuit in the power
15 P 52 4 circuit coolant temperature intercooler. Short circuit in the ground
15 P 110 4 circuit temperature antifreeze. Short circuit in the ground
15 P 175 4 Chain oil temperature. Short circuit in the ground
16 P 111 3-level circuit antifreeze. Short circuit in the power
16 P 111 5 second circuit level antifreeze. Short circuit in the power
17 P 51 3 Throttle position circuit failed high
17 P 72 3 Bypass position circuit failed high
17 P 3 354 Relative humidity sensor circuit failed high
18 P 51 4 Throttle position circuit failed low
18 P 72 4 Bypass position circuit failed low
18 P 354 4 Relative humidity sensor circuit failed low
21 P 91 3 TPS circuit failed high
22 P 91 4 TPS circuit failed low
23 s 65 3 Oxygen content circuit failed high
23 P 174 3 Chain fuel temperature. Short circuit in the power
24 s 65 4 Oxygen content circuit failed low
24 p 174 4 Chain fuel temperature. Short circuit in the ground
25 no codes
26 s 25 November Aux. shutdown # 1 active
26 S 61 11 Aux. shutdown # 2 active (Incorrect SID. subject to change)
27, p 105 3 circuit temperature in the reservoir. Short circuit in the power
27 p 171 3 Ambient air temp circuit failed high
27 p 172 3 Air temp, circuit failed high
28, p 105 to 4 Chain manifold temperature. Short circuit in the ground
28 p 171 4 Ambient air temp circuit failed low
28 p 172 4 Air temp, circuit failed low
29 p 404 4 TCO temperature circuit failed low
29 p 351 4 TCI Temperature circuit failed low
31 S 51 3 Aux. Output # 3 open circuit (high side) S3
31 S 51 4 Aux. Output # 3 short to ground (high side) S3
31 S 51 7 Aux. Output # 3 mech. system fail S3
31 s 52 3 Aux. Output # 4 open circuit (high side) T3
31 s 52 4 Aux. Output # 4 short to ground (high side) T3
31 s 52 7 Aux. Output # 4 mech. system fail T3
32 S 238 3 SEL short to battery B1
32 S 238 4 SEL open circuit B1
32 s 239 3 CEL short to battery B2
32 s 239 4 CEL open circuit B2
33 p 102 3 Boost pressure circuit failed high
34 p 102 4 Boost pressure circuit failed low
35 p 19 March Ext range oil pressure circuit failed high
35 p 100 3 Chain oil pressure. Short circuit in the power
36 P 19 April Ext range oil pressure circuit failed low
36 P 100 4 Chain oil pressure. Short circuit in the ground
37 P 18 March Ext range fuel pressure circuit failed high
37 P 94 3 Chain fuel pressure. Short circuit in the power
37 P 95 3 Fuel Filter Restriction circuit failed high
38 P 18 April Ext range fuel pressure circuit failed low
38 P 94 4 Chain fuel pressure. Short circuit in the ground
38 P 95 4 Fuel Filter Restriction circuit failed low
39 S 146 2 Mechanical error EGR valve
39 S 146 12 Mechanical error EGR valve
39 S 146 return valve 7 does not meet the exhaust
39 S 147 2 turbocharger control mechanism does not respond
39 s 147 12 turbocharger control mechanism does not respond
39 s 14 147 current returns exhaust gases enough
39 S 147 11 turbocharger control mechanism does not respond
39 S 147 7 turbocharger control mechanism does not respond
41 S 21 0 Too many SRS (missing TRS)
42 S 21 January Too few SRS (missing SRS)
43 p 111 1 Low coolant level
44 p 52 0 ntercooler coolant temp, high
44 p 105 0 temperature in the reservoir above the norm
44 p 110 0 antifreeze temperature above normal
44 p 172 0 Air inlet temp, high
44 p 175 0 Oil temperature above normal
45 p 19 January Ext range oil pressure low
45 p 100 1 Oil pressure below normal
46 p 168 1 Low voltage batteries
46 S 214 1 RTC Backup Battery Voltage Low
46 S 232 1 Sensor Supply Voltage Low A3 & W1
P 0 47 18 Ext range fuel pressure high
P 47 94 0 The fuel pressure above normal
47 p 0 102 Turbo boost press high
47 p 106 0 Air inlet pressure high or TCBV diff press high
47 p 164 0 Injection control pressure high
48 p 18 January Ext range fuel pressure low
48 p 94 1 fuel pressure below normal
48 p 106 1 Air inlet pressure low
48 p 164 1 Injection control pressure low
48 p 351 1 TCI Temperature below range
48 p 404 1 TCO Temperature below range
48 p 411 1 EGR Delta pressure low
48 p 412 1 EGR Temperature low
49 p 351 0 TCI Temperature above range
49 p 404 0 TCO Temperature above range

More Fault Codes here Detroit Disel DTC

on Dec 20, 2016 | Cars & Trucks

1 Answer

The dealer updated the thermostat housing assemble, water pump, and intermediate tube. The coolant in the car does not seem to cirulate properly.


Air pockets will cause the temp gauge to spike high, then go back down after a few seconds. Why do you think it is not circulating?

Apr 03, 2016 | Cars & Trucks

1 Answer

1995 Chevy Beretta has fluctuating temp gauge


could be the wiring, faulty temp gauge in the dash. or bad temp reader inside the engine. located where the top hose enters the engine.

Jan 31, 2013 | 1995 Chevrolet Beretta

1 Answer

I have 99 grand am gt and it blows out cold air when i have the heat on sometimes, when it does this the temp guage goes fromm 200 to 260 in couple seconds and. Car stalls out i let it sit for 1 min n...


It sounds like your thermostat is sticking. You can tell when it sticks when your temp gauge spikes high and your blower won't blow heat and when it finally opens your temp gauge goes back down and you have heat again.

May 14, 2010 | 1999 Pontiac Grand Am GT

2 Answers

Temp gauge stay on cold.


Switch ig. on, ground the sender unit wire for about 3 seconds see if the temp. gauge moves, if so change sender unit, if not then it is a faulty gauge reader.

Jan 15, 2009 | 2001 Chevrolet Impala

2 Answers

96 honda civic lxi overheating.


The car is not overheating if the temp gauge goes up and down by turning the lights on and off.  The gauge is giving you bad information.   You can confirm this by starting the car from cold, sitting in the driveway, let the temp go to somewhere BEFORE normal operating temp, then turn on headlights and fan blower on high, watch the gauge, then turn them off.   If the gauge moves significantly from the electrical load, you probably have a short or a bad ground connection.  

You have a short circuit or bad wiring somewhere in the front half of the car.  I don't know what thermostat switch you have replaced ... but it's not the problem .. stop buying them.  
If you are the original owner, was there an accident that may have damaged some wiring?  If you bought the car second hand,  get a carfax and find out where the thing was hit ... concentrate your wiring trouble shooting in that area.

I think it is something OTHER than the temperature sending unit or the gauge

Oct 28, 2008 | 1996 Honda Civic

4 Answers

Idles fast


intake leak or a bad idle air controler

Oct 03, 2008 | 1989 Chevrolet Beretta

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