(Revision A) No Start No Crank ? Starter Will Not Engage And There Are No Related Codes Or Concerns
full bulletin at NHTSA ↗2009 Jeep Wrangler engine problems
severe 17 complaints filed with NHTSA · avg repair $3,100 · see engine across all vehicles →
Failure mileage
Complaints
17
Recalls
0
Avg fix
$3,100
2crashes
5fires
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering engine on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
Valve Body. These may cause over drive cycling.
full bulletin at NHTSA ↗NAG1 (5A580) Valve Body As per Warranty Bulletin D-13-22, please use R2108213A$ valve body for all Warranty (W), Mopar (M) and Mopar Vehicle Protection (F) claims.~ Assembly also includes Filter (52108325AA) and Gasket (52108332AA).~
full bulletin at NHTSA ↗Part Description: Valve Body Assembly Issue Description: Valve body design was changed between 2010MY and 2011MY applications. To prevent mix matching valve bodies and solenoid packs the connectors are color coded.~ Valve bodies with a white connector can be used on 2010, 2009, 2008..., model years. Valve bodies with a gray connector can only be used on 2011, 2012, 2013..., model years.~ Solenoid packs with a white connector are used with 2010, 2009, 2008..., model years. Solenoid packs with a gray connector are used with 2011, 2012, 2013..., model years.
full bulletin at NHTSA ↗Cowl Trim Panel Fastener Water Leak This bulletin involves modifying or replacing the cowl trim panel fasteners to correct a water leak condition. The customer may describe a water accumulation condition on the vehicle floor front foot well area.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The 2009 Wrangler engine has documented defects that go beyond normal wear. Owners describe plastic oil pressure valves melting inside the engine, causing stalling and catastrophic failure requiring complete engine replacement at $5,000–$7,000. Connecting rod bolts are breaking during normal driving, again totaling the engine. The vehicle catches fire—sometimes without warning at low speeds, sometimes sitting idle in garages—traced to inadequate heat shielding and transmission cooler leaks spraying fluid onto hot exhaust manifolds.
Exhaust manifolds crack repeatedly (one owner replaced his seven times), allowing fumes into the cabin. The engine hesitates and loses power during acceleration. Oil consumption runs 1–3 quarts per 1,000 miles from new, leaving the pan dry between recommended changes despite regular maintenance. Transmission cooler design allows overheating.
Chrysler has issued TSB 09-001-13 for cracking manifolds and an extended warranty (TSB for transmission cooler lines on certain build dates) but refuses coverage on vehicles it deems outside the criteria or warranty period. Dealers initially told owners their warranties were void over minor owner maintenance, then denied reimbursement even when Chrysler acknowledged manufacturing defects.
These are consumer allegations unverified by Jeep, but the breadth of engine-failure reports—especially fires—marks this engine as high-risk for used-car buyers.
Same Jeep Wrangler engine reports on nearby years: 2007 · 2008 · 2010 · 2011 · 2012
Failure modes owners describe
Plastic oil pressure valve melting
Oil pressure valve located inside the engine constructed of plastic material, melting under normal operation and causing engine failure.
When: 2,000–77,000 miles
Symptoms owners cite: Engine stalling; Low oil pressure warning light illumination; Engine failure requiring replacement
Repairs/costs cited: Engine replacement: $5,000–$7,000. Owner reported finding plastic valve melted during teardown.
Recalls/TSBs owners mention: Chrysler denied warranty coverage citing void status from owner-performed oil change; later denied reimbursement claim for manufacturing defect. TSB 09-001-13 referenced by owner as known issue.
Transmission oil cooler line weeping/leaking
Transmission oil cooler supply and return lines weep or leak at hose-to-tube crimp joints, posing fire risk if fluid contacts hot exhaust components.
When: Unknown mileage
Symptoms owners cite: Transmission fluid leaking from cooler lines; Potential fire hazard if fluid contacts exhaust
Repairs/costs cited: Transmission oil cooler line assembly replacement required.
Recalls/TSBs owners mention: TSB 2008–2010 JK Wrangler with 3.8L engine and automatic transmission built before March 10, 2010 covered under 7-year/70,000-mile extended warranty. Owner's vehicle met criteria but Chrysler refused coverage.
Engine compartment fire – inadequate heat shielding
Insufficient or missing heat shielding beneath exhaust system allows transmission cooler fluid or other flammable liquids to ignite on hot exhaust manifolds.
When: 2,000–130,000 miles
Symptoms owners cite: Smoke from exhaust pipe; Visible flames in engine compartment; Complete vehicle fire; Fire while vehicle stationary; No warning indicators
Repairs/costs cited: One instance caused complete engine fire requiring fire department response. Another fire broke out while vehicle sat idle in garage at 667 miles.
Recalls/TSBs owners mention: Dealers stated no recalls exist; one mechanic claimed vehicle was designed properly. Chrysler claims unknown cause on fire at 667 miles.
Exhaust manifold cracking and leaking
Driver-side exhaust manifold cracks repeatedly, allowing exhaust fumes to enter the cabin.
When: 16,000 miles and recurring
Symptoms owners cite: Cracked exhaust manifold; Unsafe exhaust fumes entering cabin; Manifold failure recurring 7 times total
Repairs/costs cited: Dealer replaced manifold at least 7 times. Owner suspects underlying warped head or valve problem.
Recalls/TSBs owners mention: TSB 09-001-13 documented. Chrysler will not cover repairs beyond warranty period despite recurring defect.
Engine hesitation, loss of power, bucking
Vehicle hesitates on acceleration, loses power during merging, and bucks randomly during gentle acceleration.
When: Unknown mileage
Symptoms owners cite: 2+ second delay when accelerating from stop; Loss of power when merging at highway speed; Random bucking and power loss during gentle acceleration
Violent shaking at highway speed
Vehicle shakes violently while driving, resolves temporarily after turning engine off and restarting; occurs intermittently.
When: 30,000 miles
Symptoms owners cite: Violent shaking at 65 mph; Intermittent occurrence
Repairs/costs cited: Dealer performed diagnostic testing but did not repair.
Connecting rod bolt failure
Connecting rod bolts break during normal operation, causing catastrophic internal engine damage.
When: Unknown mileage
Symptoms owners cite: Sudden engine stop; Oil leaking from engine; Connecting rod cap protruding from engine block; Complete engine failure
Repairs/costs cited: Two connecting rod bolts found broken in oil pan. Engine replaced with remanufactured unit from Jeep.
Excessive oil consumption
Engine consumes 1–3 quarts of oil per 1,000 miles, leaving the pan nearly empty between recommended 5,000-mile oil changes.
When: From new
Symptoms owners cite: Oil level dropping 1–3 quarts per 1,000 miles
Recalls/TSBs owners mention: Mopar states this consumption level is normal.
Transmission cooler overheating
Transmission oil temperature climbs excessively and boils over due to inadequate cooler airflow design.
When: Unknown mileage
Symptoms owners cite: Transmission fluid boiling over; Excessive transmission oil temperature
Recalls/TSBs owners mention: Owner attributes to poor cooler placement on bottom of radiator without direct airflow.
Low oil level at low mileage
Vehicle exhibits abnormally low oil level early in service life despite regular maintenance.
When: 5,000 miles
Symptoms owners cite: Low oil level
Repairs/costs cited: Dealer stated vehicle performing normally.
Heater core failure
Heating system fails completely, causing inability to defrost windows and reducing visibility.
When: 150,000 miles
Symptoms owners cite: Complete loss of heat; Windows fogging excessively; Reduced visibility
Repairs/costs cited: Owner unable to drive vehicle safely without cracking windows.
Water intrusion into actuator
Water contamination inside an undisclosed actuator component requiring replacement.
When: 64,000 miles
Symptoms owners cite: Water found inside actuator
Repairs/costs cited: Actuator replacement needed. Vehicle not repaired.
Synthesized from 17 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 0 most recent
Had engine trouble with your 2009 Jeep Wrangler?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the engine problem on the 2009 Jeep Wrangler?
It's a meaningful issue. 17 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $3,100.
At what mileage does the engine typically fail?
Across the 15 complaints that reported odometer mileage, most engine failures cluster between 17,000 and 66,054 miles, with the median around 50,000. A quarter of owners report trouble before 17,000; a quarter make it past 66,054. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2009/Jeep/Wrangler.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.