Can anyone help me?
I have a 1989 Honda Civic DX hatchback with a standard transmission.
It has a terrible hesitation problem ONLY in cool weather. It runs perfectly in the summer when the temperature is warmer. My mechanic has changed the distributor, put a new coolant sensor, new wires and plugs but nothing has resolved the problem.

It stalls at start-up until it gets warmed up a bit.
It hesitates terribly at low speed when I start to accelerate, but it also skips or hesitates at high speed.
The only thing I can do to get past the hesitation is to take it out of gear and rev the engine way up and then engage the clutch again. I do the same thing at high speed when it starts to hesitate.

Any ideas?

 

Does the Check Engine Light go on during these episodes?

There are many possibilities, but ones I would consider are:

A loose throttle cable or a faulty throttle body or fuel pump.

 

Yes, the check engine light sometimes goes on when I'm trying to accelerate through the hesitation.

 

Information provided by member mk378 in the post below should help you retrieve the CEL trouble code(s). You can either look up the code(s) yourself by searching the HCF forum or post the codes, which HCF members will likely interpret for you.

https://www.hondacivicforum.com/m_509898/tm.htm

 

poss air intake sensor