NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
213 reports51,000 miles · Jan 8, 2004
Engine And Engine Cooling
THERE IS A CRACK IN MY EXHAUST MANIFOLD IN MY 1999 JEEP WRANGLER. WHEN I LOOKED INTO THE PROBLEM, I HAVE FOUND MANY PEOPLE WITH THE SAME COMPLAINT. I ALSO LEARNED FROM A DIAMLER-CHRYLSER DEALER THAT THEY REPLACE OVER 250 OF THESE A DAY. AND IN 2000, THEY CHANGED THE PART. THIS MAKES ME THINK THEY REALIZED IT WAS DEFECTIVE AN…
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THERE IS A CRACK IN MY EXHAUST MANIFOLD IN MY 1999 JEEP WRANGLER. WHEN I LOOKED INTO THE PROBLEM, I HAVE FOUND MANY PEOPLE WITH THE SAME COMPLAINT. I ALSO LEARNED FROM A DIAMLER-CHRYLSER DEALER THAT THEY REPLACE OVER 250 OF THESE A DAY. AND IN 2000, THEY CHANGED THE PART. THIS MAKES ME THINK THEY REALIZED IT WAS DEFECTIVE AND DID NOTHING TO THE VICTIMS THAT HAD THE DEFECTIVE PART. *LA
NHTSA ODI #10052664
Mileage unknown · Jan 7, 2004
Vehicle Speed Control
WHILE DRIVING SPEEDOMETER DID NOT WORK. DRIVER DID NOT KNOW HOW FAST THE VEHICLE WAS GOING. *AK
NHTSA ODI #10053505
102,000 miles · Jan 6, 2004
Engine And Engine Cooling
1999 JEEP WRANGLER 6 CYCL. HAS BEEN TO THE DEALERSHIP ON MULTIPLE VISITS. LOSS OF POWER DURING HIGHWAY DRIVING. AFTER REPLACING THE FUEL PUMP, RADIATOR, AND PERFORMING AN ADDITIONAL TUNE-UP BUT PROBLEM IS STILL UNRESOLVED. NOW FIND THAT THERE IS A CRACK IN THE INTAKE MANIFOLD AND THE EXHAUST MANIFOLD HAS COMPLETELY CRACKED. *…
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1999 JEEP WRANGLER 6 CYCL. HAS BEEN TO THE DEALERSHIP ON MULTIPLE VISITS. LOSS OF POWER DURING HIGHWAY DRIVING. AFTER REPLACING THE FUEL PUMP, RADIATOR, AND PERFORMING AN ADDITIONAL TUNE-UP BUT PROBLEM IS STILL UNRESOLVED. NOW FIND THAT THERE IS A CRACK IN THE INTAKE MANIFOLD AND THE EXHAUST MANIFOLD HAS COMPLETELY CRACKED. *AK
NHTSA ODI #10052490
17,000 miles · Dec 16, 2003
Electrical System
THE VEHICLE'S INSTRUMENT PANEL MALFUNCTIONED. THE LEFT AND RIGHT SIDE INSTRUMENT PANEL WIRING GROUND ATTACHMENT SCREWS BECAME LOOSE. *JB
NHTSA ODI #10051610
48,488 miles · Dec 10, 2003
Engine And Engine Cooling
FIRST HEARD A PROBLEM WITH THE EXHAUST SYSTEM JUST PRIOR TO THE EASTER HOLIDAY 2002 AND TOOK IT TO THE DEALERSHIP TO BE INVESTIGATED AFTER THE HOLIDAY WEEKEND. I WAS TOLD THE WAS A CRACK IN THE EXHAUST MANIFOLD AND THE VEHICLE WAS ONE DAY OUT OF WARRANTY (DUE TO THE HOLIDAY WEEKEND). AFTER CONSIDERABLE DEBATE, THE DEALERSHIP A…
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FIRST HEARD A PROBLEM WITH THE EXHAUST SYSTEM JUST PRIOR TO THE EASTER HOLIDAY 2002 AND TOOK IT TO THE DEALERSHIP TO BE INVESTIGATED AFTER THE HOLIDAY WEEKEND. I WAS TOLD THE WAS A CRACK IN THE EXHAUST MANIFOLD AND THE VEHICLE WAS ONE DAY OUT OF WARRANTY (DUE TO THE HOLIDAY WEEKEND). AFTER CONSIDERABLE DEBATE, THE DEALERSHIP AGREED TO REPAIR THE VEHICLE FOR A $150.00 DEDUCTIBLE. NOW A YEAR AND A HALF LATER THE EXACT SAME ISSUE HAS ARISEN AND THE FACTORY REPAIR IS ONLY WARRANTED FOR 12 MONTHS/12,000 MILES. AFTER AN EXCHANGE OF 4 EMAILS WITH DAIMLER/CHRYSLER THEY CONTINUE TO TELL ME THERE IS NOTHING THEY CAN DO AND I AM LIABLE FOR THE FULL REPAIR COST. *LA
NHTSA ODI #10049541
37,000 miles · Dec 3, 2003
Engine And Engine Cooling
MANY JEEP WRANGLERS BUILT BEFORE 2001 HAVE A DEFECTIVE MANIFOLD THAT CRACKS, CAUSING EXHAUST PROBLEMS. THIS IS THE REASON JEEP COMPLETELY REDESIGNED THE MANIFOLD IN THE NEWER MODELS. THEY HAVE YET TO SEND OUT A RECALL TO FIX THIS PROBLEM. WHEN I FIRST NOTICED THE LOUD NOISE RESULTING FROM THE CRACKED MANIFOLD, MY CAR HAD APPR…
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MANY JEEP WRANGLERS BUILT BEFORE 2001 HAVE A DEFECTIVE MANIFOLD THAT CRACKS, CAUSING EXHAUST PROBLEMS. THIS IS THE REASON JEEP COMPLETELY REDESIGNED THE MANIFOLD IN THE NEWER MODELS. THEY HAVE YET TO SEND OUT A RECALL TO FIX THIS PROBLEM. WHEN I FIRST NOTICED THE LOUD NOISE RESULTING FROM THE CRACKED MANIFOLD, MY CAR HAD APPROXIMATELY 37,000 MILES ON IT. NOT HIGH MILEAGE BY ANY MEANS. THE MAIN CONCERN I HAVE WITH THIS PROBLEM IS THE HEALTH HAZARD IT POSES TO THE DRIVER. THE SECTION OF THE WRANGLER WHERE THE CRACKED MANIFOLD IS LOCATED IS UNDERNEATH THE FRONT OF THE CAR, WHERE EXHAUST FUMES LEAKING FROM IT SEEP UP INTO THE CABIN VERY EASILY, ESPECIALLY WHEN STOPPED AT LIGHTS OR IN HEAVY TRAFFIC. I BELIEVE THE MANUFACTURERS OF JEEP ARE VERY AWARE OF THIS PROBLEM BUT DON'T CARE TO DO ANYTHING ABOUT IT. *NLM
NHTSA ODI #10049149
55,000 miles · Nov 30, 2003
Engine And Engine Cooling
SMALL CRACK DEVELOPED IN EXHUST MANIFOLD, CAUSING TICKING NOISE AND LOWERED FUEL ECONOMY.*AK
NHTSA ODI #10048896
20,000 miles · Nov 5, 2003
Engine And Engine Cooling
THE EXHAUST MANIFOLD CRACKED IN THREE DIFFERENT PLACES AND CAUSED THE VEHICLE TO MISFIRE AND STALL. AN INDEPENDENT SHOP STATED THAT THE MANIFOLD CRACKED BECAUSE IT WAS NOT PROPERLY SUPPORTED. THE DEALER WAS NOTIFIED BUT STATED THERE WAS NOTHING THEY COULD DO. *NLM *JB *NLM
NHTSA ODI #10042271
Mileage unknown · Sep 25, 2003
Fuel System, Gasoline
THE VEHICLES FUEL GAUGE MALFUNCTIONED AND AS A RESULT IT DID NOT PROVIDE AN ACTUAL FUEL READING. THIS PROBLEM WAS PREVENTING THE DRIVER FROM KNOWING THE CORRECT FUEL READING. CONSUMER HAS MADE CONTACT WITH THE DEALERSHIP. PLEASE PROVIDE ANY FURTHER DETAILS. *NLM
NHTSA ODI #10040630
Mileage unknown · Sep 21, 2003
Suspension
I'M NOT SURE WHAT THE PROBLEM WITH THE CAR IS, BUT AT AROUND 55 MPH, THE VEHICLE BEGINS TO LOSE CONTROL AND THEN GAINS IT AGAIN AS IT SPEEDS UP. POSSIBLY SOME SORT OF RESONANCE FOUND AT THAT SPEED, BUT IT HAS BEGUN TO BE A SEVERE PROBLEM. I HAVE BEEN DRIVING DOWN THE ROAD AND IF I HIT THAT SPEED ON THE WRONG SECTION, THE CAR B…
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I'M NOT SURE WHAT THE PROBLEM WITH THE CAR IS, BUT AT AROUND 55 MPH, THE VEHICLE BEGINS TO LOSE CONTROL AND THEN GAINS IT AGAIN AS IT SPEEDS UP. POSSIBLY SOME SORT OF RESONANCE FOUND AT THAT SPEED, BUT IT HAS BEGUN TO BE A SEVERE PROBLEM. I HAVE BEEN DRIVING DOWN THE ROAD AND IF I HIT THAT SPEED ON THE WRONG SECTION, THE CAR BEINGS TO PRACTICALLY BOUNCE UP AND DOWN. THIS DOESN'T SEEM SAFE OR RIGHT TO ME.*JB
NHTSA ODI #10039250
Illustration