Map sensor vaccume line

Reply Subscribe

Thread Tools

Search this Thread

05-25-2012, 12:49 AM

onmyonly

Junior Member

Thread Starter

Join Date: May 2009

Location: california

Posts: 40

Likes: 0

Received 0 Likes on 0 Posts

Year: 1987

Model: Cherokee

Engine: 4.0

Map sensor vaccume line

Anyone else have this happen?
When cranking usually cold start the map vac like grommet pops out of the throttle body..
Keep starts runs like crap. Put it back it she's perfect.

Thinking its slack in the timing chain???

Thinking super glue..

Reply Like

05-25-2012, 07:34 AM

cruiser54

::CF Moderator::

Join Date: Aug 2011

Location: Prescott, Az

Posts: 43,863

Likes: 1,926

Received 1,524 Likes on 1,236 Posts

Year: 1990

Model: Cherokee (XJ)

Engine: 4.0

Don't super glue your timing chain just yet.

A little dab of any automotive adhesive around the outside of the grommet, being careful not to get anything inside the line, should work well.

Reply Like

05-25-2012, 07:37 AM

jakbob

CF Veteran

Join Date: Dec 2011

Location: Pasadena, MD

Posts: 4,006

Likes: 0

Received 1 Like on 1 Post

Year: 1987

Model: Wagoneer

Engine: Renix 4.0

I had the same problem. It went away after i replaced my spark plugs. Im thinking new plugs, no back fire, plug stayed in.

Reply Like

05-25-2012, 07:42 AM

cruiser54

::CF Moderator::

Join Date: Aug 2011

Location: Prescott, Az

Posts: 43,863

Likes: 1,926

Received 1,524 Likes on 1,236 Posts

Year: 1990

Model: Cherokee (XJ)

Engine: 4.0

Quote:

Originally Posted by jakbob

I had the same problem. It went away after i replaced my spark plugs. Im thinking new plugs, no back fire, plug stayed in.

Good point. Back to basics. Cap, rotor, plugs and wires evey 30,000 miles. Only cap and rotor with brass terminals and Champion Coppers or NGK plugs. Belden wires from Napa are way better than the Vatozone crap.

Reply Like