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| Subject | Date Asked | Expert |
| 93 Cadillac Coupe DeVille fan motor runs after car is turned off | 9/1/2007 | Tom Joy |
| Q: My grandmothers 93 Cadillac Coupe DeVille AC/heater fan motor continues to run after car is turned ... A: Replace the blower motor that is inserted into the big black plastic housing on the passengers side ... | ||
| 84 Fleetwood 4.1 question | 8/31/2007 | Tom Joy |
| Q: I have an 1984 Fleetwood 2dr. with a 4.1, it has 59k miles. the car was has its good and bad days. ... A: 26 = shorted throttle switch on the idle speed control motor. 28 = open overdrive circuit. 38 = ... | ||
| 1996 Sedan Deville | 8/30/2007 | Tom Joy |
| Q: I had an earlier question about the service engine soon light and the service transmission display. ... A: PC0717 = no signal from turbine speed circuit. (which is a sensor inside of the transmission). ... | ||
| 1985 Cadillac Eldorado ECM Module | 8/30/2007 | Tom Joy |
| Q: I am restoring this vehicle and the previous owner bypassed ECM Module .. Can you tell me by wire ... A: I can provide you with an electrical schematic showing which wires go where. As far as the short in ... | ||
| Hesitation | 8/30/2007 | Tom Joy |
| Q: Tom, My service engine soon light keeps coming on. I ran the diagnostics and I am getting E91. In ... A: E91 = faulty neutral starter safety switch on the transmission. E95 = Is NOT a code. E96 = Torque ... | ||
| 87 seadan deville | 8/30/2007 | Tom Joy |
| Q: why does my car keep draining batteries i bought a new alternator and now two batteries A: You need to install an amp meter inbetween the negative battery post and the negative battery cable ... | ||
| 1995 cadillac eldorado cruise control | 8/30/2007 | Tom Joy |
| Q: I have an error code p036 and p068. The p036 is for the EGR valve pintle position out of range. Is ... A: OK, I just wanted to make SURE that you were clearing the codes correctly. Most people when I ask ... | ||
| O2 Sensor | 8/29/2007 | Tom Joy |
| Q: I have a 1990 Deville. I've checked the codes (had bad mpg and the car is running really rich of ... A: OK, The ones we are concerned about are EE40 and FF48. EE40 = open power steering switch. Take a ... | ||
| car won'nt start cadillac catera 99 | 8/29/2007 | Tom Joy |
| Q: i have a 99 catera, that will not start after being driven over 30 minutes, starter and solenoid ... A: Did you try another identical key ?. Did you try cleaning your key ? Problem could be: 1. ... | ||
| O2 Sensor | 8/29/2007 | Tom Joy |
| Q: I have a 1990 Deville. I've checked the codes (had bad mpg and the car is running really rich of ... A: OK, Let's see if you have any FAULT CODES in the computers via: 1. Ignition key ON. Engine OFF. 2. ... | ||
| O2 Sensor | 8/29/2007 | Tom Joy |
| Q: I have a 1990 Deville. I've checked the codes (had bad mpg and the car is running really rich of ... A: Are you POSITIVE that it is gas that is coming out of the tail pipe or just water from condensation. ... | ||
| 1995 cadillac eldorado cruise control | 8/28/2007 | Tom Joy |
| Q: I have an error code p036 and p068. The p036 is for the EGR valve pintle position out of range. Is ... A: You need to go back and re-read the codes and see if the codes are either CURRENT (C) or HISTORY (H) ... | ||
| Airbags | 8/28/2007 | Tom Joy |
| Q: Tom I want to disconnect my airbags. I am only 5 ft 2 inch 105 lbs. I feel they are more of a danger ... A: Unfortunately there are no directives by the manufacturer for disabiling the system. What you need ... | ||
| 1991 cady devile air contioning | 8/27/2007 | Tom Joy |
| Q: Recently had compressor replaced.....worked o.k. for couple of days.....took back to mechanic.....he ... A: All is NOT OK if the freon is low and the compressor is OFF. What usually happens is that when a ... | ||
| 93 Deville 60 special | 8/27/2007 | Tom Joy |
| Q: I recently bought a 1993 Cadillac Deville 60 Special - 4.9 L TBI. 175000 miles. It generally runs ... A: It is not called an ICM, It is called an ISC (Idle Speed Control motor. Did you adjust ANYTHING at ... | ||
| 1988 Cadillac Coupe DeVille | 8/27/2007 | Tom Joy |
| Q: I just put in a new battery and alternator for my '88 Cadillac and everything was working fine until ... A: Depending upon your mechanical ability to use a test light and a digital volt meter to perform some ... | ||
| Rough gear change from 1st to 2nd | 8/27/2007 | Tom Joy |
| Q: I have a 1995 Cadillac Deville Concours, and there are days when it seems that on take off, the ... A: The first thing would be a road test by myself or a transmission tech and next would be a pressure ... | ||
| 1988 Cadillac Coupe DeVille | 8/26/2007 | Tom Joy |
| Q: I just put in a new battery and alternator for my '88 Cadillac and everything was working fine until ... A: The most likely cause is a faulty BODY CONTROL MODULE (BCM) that will need to be replaced. I have ... | ||
| 1999 DeVille Transmission Problem | 8/26/2007 | Tom Joy |
| Q: Transmission occasionally fails to shift into 4th gear as indicated by monitoring engine tach ... A: Here is a simple way to test the overdrive circuit. 1. maintain a speed of 60 mph with your right ... | ||
| 1999 Cadillac Seville SLS Overheating? | 8/26/2007 | Tom Joy |
| Q: I purchased a 1999 cadillac seville sls last november. One day while driving home on the highway in ... A: Next time it does get up to the Hot side, pull over and open the hood and see if BOTH cooling fans ... | ||
| 1990 Eldorado Ignition Cynlinder | 8/25/2007 | Tom Joy |
| Q: I replaced the ignition cylinder, now security light comes on and car will not crank. Control panel ... A: Does the ignition key tht you are using have the IDENTICAL resistance reading as the old key ?. Did ... | ||
| 1990 Deville | 8/24/2007 | Tom Joy |
| Q: I have a 1990 De ville that runs OK in the morning but at night when i drive it starts to sputter ... A: Check the computers for CODES via: 1. Ignition ON, Engine OFF. 2. Simultaneously push and hold the ... | ||
| misfires on 2,4 and 6 cyl | 8/24/2007 | Tom Joy |
| Q: i took my car in to get a diagnostic readout and it said my 2,4 and 6 cyl were misfiring suggestion ... A: After EACH code displays the word CURRENT or HISTORY appears. I need to know which are CURRENT and ... | ||
| 1995 Cadillac SLS stalls | 8/22/2007 | Tom Joy |
| Q: 1995 Cadillac SLS dash instruments go wild, the car stalls and resets the air conditioning to 75 ... A: check the black instrument ground wire that is located behind the kick panel which is located behind ... | ||
| Instrument panel | 8/21/2007 | Tom Joy |
| Q: I have a 1998 STS, My Instrument /gauge panel went out the other day can you tell me if there are ... A: Let's check for CODES : 1. Ignition ON. Engine OFF. 2. Simultaneously push and hold the ON/OFF and ... | ||
| "service engine light soon" | 8/20/2007 | Tom Joy |
| Q: My 1990 Eldorado's service engine light soon came on today. I noticed that the RPM's stopped ... A: Perform this test: 1. Ignition ON. Engine OFF. 2. Simultaneously push and hold the OFF and WARMER ... | ||
| 93 Cadillac 60 Special | 8/15/2007 | Tom Joy |
| Q: The car starts and then after I shut it off it doesn't start. However, the horn works and the ... A: 1. remove the gas cap. 2. have someone listen for the fuel pump to make a buzzing sound for only 2 ... | ||
| 1991 Cadillac Deville 4.9L Error Codes | 8/13/2007 | Tom Joy |
| Q: I have wasted time and money with the problems in my car. Mechanic after mechanic, the only thing ... A: Check the electrical harness for damage. Also look to see if the BLACK ground wire is attached at ... | ||
| Coolant loss/ head gasket | 8/12/2007 | Tom Joy |
| Q: I have a '98 Deville w/northstar 4.6. It has 187266 miles on the engine. I've been experiencing ... A: it is your typical blown head gasket. Yes, I have seen a few starter housing busted. If you have ... | ||
| 85 cadillac biaritz | 8/8/2007 | Tom Joy |
| Q: possible error code h.8.8 only half an h comes up?, before that it read 56 then after h.8.8 it went ... A: The FIRST thing you need to do is replace the climate control panel as some of the segments for the ... | ||
| 95 sedan deville computer | 8/6/2007 | Tom Joy |
| Q: I think my ecm that controls ac and idle properties is fried. Where is it located, is it difficult ... A: 2. warm up engine to normal operating temp. 2. let engine idle in park with wheels straight ahead. ... | ||
| 95 sedan deville computer | 8/5/2007 | Tom Joy |
| Q: I think my ecm that controls ac and idle properties is fried. Where is it located, is it difficult ... A: Check the computer for codes and if there are any I need to know if they are CURRENT or HISTORY ... | ||
| ECU | 7/31/2007 | Tom Joy |
| Q: This ECU has a vacuum tube on it,is this for the barometer and is there a way to verify if the ECU ... A: That black tube is measuring engine vacuum and if you disconnect or have fault in the line with the ... | ||
| 1997 deville | 7/31/2007 | Tom Joy |
| Q: I have a 1997 deville northstar v8, and no manuals, the change oil light comes on every time i start ... A: Ignition ON, Engine OFF. 2. While watching the diagnostic information center (CIC) display keep ... | ||
| 1991 Cadillac Sedan Deville (4.9) | 7/31/2007 | Tom Joy |
| Q: Can you please help? My mom has a 1991 Cadillac Sedan Deville (4.9) she is having problems with. ... A: E31 = Shorted MAP sensor circuit. E73 = Intermittent coolant sensor. E74 = Intermittent MAT ... | ||
| No Start 1979 Seville | 7/30/2007 | Tom Joy |
| Q: nice service you provide. I have a 79 Seville Federal emissions equipped. It has no power to the ... A: I do not have a 79 factory book. I believe there is a fuel pump relay somewhere under the dash but I ... | ||
| a/c comp circuit | 7/29/2007 | Tom Joy |
| Q: 95 cadillac deville. do you have a/c relay pinout wiring diagram. 3 and 5 coil high and low? pin ... A: YES, I can e-mail you a picture location and the wires to jumper in order to add additional freon. ... | ||
| 1994 Cad. Fleetwood AC Fan | 7/29/2007 | Tom Joy |
| Q: When I shut off the engine, the Fan motor continues to run. When I press the off button on the ... A: NO. Your problem is either the blower motor itself and or the AC/HEATER programmer (ACM). Which ... | ||
| Hesitation | 7/29/2007 | Tom Joy |
| Q: I just recently purchased a 1966 Cadillac "Calais". When I step on the gas pedal, the car hesitates ... A: A 1966 ?. Are you POSITIVE of the year of the vehicle ?. If it IS a 1966, I would have to say you ... | ||
| cadillac | 7/28/2007 | Tom Joy |
| Q: my daughter took her car to get tires it would not start so they tried to jump at starter now her 92 ... A: Make sure that the ignition key is clean and try again. The system works as follows: The ignition ... | ||
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Tom Joy
Top Expert on this page
Expertise
Have expertise from 1960 thru 1999 CADILLAC'S in carb, fuel injection, brakes, suspension, CHECK ENGINE lights, ignition, transmission, A/C and heating, Electrical problems and all electronic components. if maxed out you can contact me at: tomcjoy@msn.com.
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